K4B2G0446D-HYK00 [SAMSUNG]
DDR DRAM, 512MX4, 0.225ns, CMOS, PBGA78, HALOGEN FREE AND ROHS COMPLIANT, FBGA-78;型号: | K4B2G0446D-HYK00 |
厂家: | SAMSUNG |
描述: | DDR DRAM, 512MX4, 0.225ns, CMOS, PBGA78, HALOGEN FREE AND ROHS COMPLIANT, FBGA-78 动态存储器 双倍数据速率 |
文件: | 总64页 (文件大小:1614K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
Rev. 1.04, Aug. 2011
K4B2G0446D
K4B2G0846D
1.35V
2Gb D-die DDR3L SDRAM
78FBGA with Lead-Free & Halogen-Free
(RoHS compliant)
datasheet
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SPECIFICATIONS WITHOUT NOTICE.
Products and specifications discussed herein are for reference purposes only. All information discussed
herein is provided on an "AS IS" basis, without warranties of any kind.
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ⓒ 2011 Samsung Electronics Co., Ltd. All rights reserved.
- 1 -
Rev. 1.04
K4B2G0446D
K4B2G0846D
datasheet
DDR3L SDRAM
Revision History
Revision No.
History
Draft Date
Aug. 2010
Nov. 2010
Jan. 2011
May. 2011
Aug. 2011
Remark
Editor
S.H.Kim
S.H.Kim
J.Y.Lee
J.Y.Lee
J.Y.Lee
1.0
- First Spec. Release
-
-
-
-
-
1.01
1.02
1.03
1.04
- Corrected typo
- Corrected typo
- Corrected typo
- Corrected typo
- 2 -
Rev. 1.04
K4B2G0446D
K4B2G0846D
datasheet
DDR3L SDRAM
Table Of Contents
2Gb D-die DDR3L SDRAM
1. Ordering Information.....................................................................................................................................................5
2. Key Features.................................................................................................................................................................5
3. Package pinout/Mechanical Dimension & Addressing..................................................................................................6
3.1 x4 Package Pinout (Top view) : 78ball FBGA Package .......................................................................................... 6
3.2 x8 Package Pinout (Top view) : 78ball FBGA Package .......................................................................................... 7
3.3 FBGA Package Dimension (x4/x8).......................................................................................................................... 8
4. Input/Output Functional Description..............................................................................................................................9
5. DDR3 SDRAM Addressing ...........................................................................................................................................10
6. Absolute Maximum Ratings ..........................................................................................................................................11
6.1 Absolute Maximum DC Ratings............................................................................................................................... 11
6.2 DRAM Component Operating Temperature Range ................................................................................................ 11
7. AC & DC Operating Conditions.....................................................................................................................................11
7.1 Recommended DC operating Conditions................................................................................................................ 11
8. AC & DC Input Measurement Levels............................................................................................................................12
8.1 AC & DC Logic input levels for single-ended signals .............................................................................................. 12
8.2 VREF Tolerances...................................................................................................................................................... 14
8.3 AC & DC Logic Input Levels for Differential Signals................................................................................................ 15
8.3.1. Differential signals definition ............................................................................................................................ 15
8.3.2. Differential swing requirement for clock (CK - CK) and strobe (DQS - DQS) .................................................. 15
8.3.3. Single-ended requirements for differential signals........................................................................................... 17
8.4 Differential Input Cross Point Voltage...................................................................................................................... 18
8.5 Slew rate definition for Differential Input Signals..................................................................................................... 19
8.6 Slew rate definitions for Differential Input Signals ................................................................................................... 19
9. AC & DC Output Measurement Levels .........................................................................................................................19
9.1 Single-ended AC & DC Output Levels..................................................................................................................... 19
9.2 Differential AC & DC Output Levels......................................................................................................................... 19
9.3 Single-ended Output Slew Rate .............................................................................................................................. 20
9.4 Differential Output Slew Rate .................................................................................................................................. 21
9.5 Reference Load for AC Timing and Output Slew Rate............................................................................................ 21
9.6 Overshoot/Undershoot Specification....................................................................................................................... 22
9.6.1. Address and Control Overshoot and Undershoot specifications...................................................................... 22
9.6.2. Clock, Data, Strobe and Mask Overshoot and Undershoot Specifications...................................................... 23
9.7 34ohm Output Driver DC Electrical Characteristics................................................................................................. 23
9.7.1. Output Drive Temperature and Voltage Sensitivity.......................................................................................... 25
9.8 On-Die Termination (ODT) Levels and I-V Characteristics ..................................................................................... 25
9.8.1. ODT DC Electrical Characteristics................................................................................................................... 26
9.8.2. ODT Temperature and Voltage sensitivity ....................................................................................................... 28
9.9 ODT Timing Definitions ........................................................................................................................................... 29
9.9.1. Test Load for ODT Timings.............................................................................................................................. 29
9.9.2. ODT Timing Definitions.................................................................................................................................... 29
10. IDD Current Measure Method.....................................................................................................................................32
10.1 IDD Measurement Conditions ............................................................................................................................... 32
11. 2Gb DDR3 SDRAM D-die IDD Specification Table ....................................................................................................41
12. Input/Output Capacitance ...........................................................................................................................................42
13. Electrical Characteristics and AC timing for DDR3-800 to DDR3-1600......................................................................43
13.1 Clock Specification ................................................................................................................................................ 43
13.1.1. Definition for tCK(avg).................................................................................................................................... 43
13.1.2. Definition for tCK(abs).................................................................................................................................... 43
13.1.3. Definition for tCH(avg) and tCL(avg).............................................................................................................. 43
13.1.4. Definition for note for tJIT(per), tJIT(per, Ick)................................................................................................. 43
13.1.5. Definition for tJIT(cc), tJIT(cc, Ick) ................................................................................................................. 43
13.1.6. Definition for tERR(nper)................................................................................................................................ 43
13.2 Refresh Parameters by Device Density................................................................................................................. 44
13.3 Speed Bins and CL, tRCD, tRP, tRC and tRAS for corresponding Bin................................................................. 44
13.3.1. Speed Bin Table Notes .................................................................................................................................. 47
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Rev. 1.04
K4B2G0446D
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datasheet
DDR3L SDRAM
14. Timing Parameters by Speed Grade ..........................................................................................................................48
14.1 Jitter Notes ............................................................................................................................................................ 51
14.2 Timing Parameter Notes........................................................................................................................................ 52
14.3 Address/Command Setup, Hold and Derating : .................................................................................................... 53
14.4 Data Setup, Hold and Slew Rate Derating : .......................................................................................................... 59
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Rev. 1.04
K4B2G0446D
K4B2G0846D
datasheet
DDR3L SDRAM
1. Ordering Information
[ Table 1 ] Samsung 2Gb DDR3L D-die ordering information table
DDR3L-1333 (9-9-9)3
K4B2G0446D-HYH9
K4B2G0846D-HYH9
DDR3L-1600 (11-11-11)2
Organization
512Mx4
DDR3L-1066 (7-7-7)
K4B2G0446D-HYF8
K4B2G0846D-HYF8
Package
K4B2G0446D-HYK0
K4B2G0846D-HYK0
78 FBGA
78 FBGA
256Mx8
NOTE :
1. Speed bin is in order of CL-tRCD-tRP.
2. Backward compatible to DDR3L-1333(9-9-9), DDR3L-1066(7-7-7)
3. Backward compatible to DDR3L-1066(7-7-7)
2. Key Features
[ Table 2 ] 2Gb DDR3 D-die Speed bins
DDR3-800
DDR3-1066
7-7-7
DDR3-1333
9-9-9
1.5
DDR3-1600
Speed
Unit
6-6-6
11-11-11
1.25
tCK(min)
CAS Latency
tRCD(min)
tRP(min)
2.5
6
1.875
7
ns
nCK
ns
9
11
15
13.125
13.125
37.5
13.5
13.5
36
13.75
13.75
35
15
ns
tRAS(min)
tRC(min)
37.5
52.5
ns
50.625
49.5
48.75
ns
•
•
JEDEC standard 1.35V(1.28V~1.45V) & 1.5V(1.425V~1.575V)
VDDQ = 1.35V(1.28V~1.45V) & 1.5V(1.425V~1.575V)
The 2Gb DDR3 SDRAM D-die is organized as a 64Mbit x 4 I/Os x 8banks,
32Mbit x 8 I/Os x 8banks device. This synchronous device achieves high
speed double-data-rate transfer rates of up to 1600Mb/sec/pin (DDR3-
1600) for general applications.
•
400 MHz fCK for 800Mb/sec/pin, 533MHz fCK for 1066Mb/sec/pin,
667MHz fCK for 1333Mb/sec/pin, 800MHz fCK for 1600Mb/sec/pin
The chip is designed to comply with the following key DDR3 SDRAM fea-
tures such as posted CAS, Programmable CWL, Internal (Self) Calibration,
On Die Termination using ODT pin and Asynchronous Reset .
•
•
•
•
8 Banks
Programmable CAS Latency(posted CAS): 5,6,7,8,9,10,11
Programmable Additive Latency: 0, CL-2 or CL-1 clock
All of the control and address inputs are synchronized with a pair of exter-
nally supplied differential clocks. Inputs are latched at the crosspoint of dif-
ferential clocks (CK rising and CK falling). All I/Os are synchronized with a
pair of bidirectional strobes (DQS and DQS) in a source synchronous fash-
ion. The address bus is used to convey row, column, and bank address
information in a RAS/CAS multiplexing style. The DDR3 device operates
with a single 1.35V(1.28V~1.45V) or 1.5V(1.425V~1.575V) power supply
and 1.35V(1.28V~1.45V) or 1.5V(1.425V~1.575V).
Programmable CAS Write Latency (CWL) = 5(DDR3-800),
6(DDR3-1066), 7(DDR3-1333) and 8(DDR3-1600)
•
•
8-bit pre-fetch
Burst Length: 8 (Interleave without any limit, sequential with starting
address “000” only), 4 with tCCD = 4 which does not allow seamless
read or write [either On the fly using A12 or MRS]
•
•
Bi-directional Differential Data-Strobe
Internal(self) calibration : Internal self calibration through ZQ pin
(RZQ : 240 ohm ± 1%)
The 2Gb DDR3 D-die device is available in 78ball FBGAs(x4/x8)
•
•
On Die Termination using ODT pin
Average Refresh Period 7.8us at lower than TCASE 85°C, 3.9us at
85°C < TCASE < 95 °C
•
•
•
•
Asynchronous Reset
Package : 78 balls FBGA - x4/x8
All of Lead-Free products are compliant for RoHS
All of products are Halogen-free
NOTE : 1. This data sheet is an abstract of full DDR3 specification and does not cover the common features which are described in “DDR3 SDRAM Device Operation & Timing
Diagram”.
2. The functionality described and the timing specifications included in this data sheet are for the DLL Enabled mode of operation.
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Rev. 1.04
K4B2G0446D
K4B2G0846D
datasheet
DDR3L SDRAM
3. Package pinout/Mechanical Dimension & Addressing
3.1 x4 Package Pinout (Top view) : 78ball FBGA Package
1
2
3
4
5
6
7
8
9
VSS
VSS
VDD
VSS
VDD
VDDQ
VSSQ
VSSQ
VDDQ
NC
A
B
C
D
E
F
NC
DQ0
DQS
DQS
NC
NC
DM
A
B
C
D
E
F
VSSQ
VSSQ
VDDQ
VSSQ
VREFDQ
NC
DQ2
NC
DQ1
VDD
DQ3
VSS
VDDQ
VSS
VDD
CS
NC
CK
NC
VSS
VDD
RAS
CAS
WE
G
H
J
ODT
NC
CK
CKE
NC
G
H
J
A10/AP
NC
ZQ
VSS
VREFCA
VSS
BA0
A3
BA2
A0
VDD
VSS
VDD
VSS
VDD
VSS
VDD
VSS
K
L
A12/BC
A1
BA1
A4
K
L
A5
A2
M
N
A7
A9
A11
A6
M
N
RESET
A13
A14
A8
1
2
3
4
5
6
7
8
9
Ball Locations (x4)
A
B
C
D
E
F
Populated ball
Ball not populated
G
H
J
Top view
(See the balls through the package)
K
L
M
N
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Rev. 1.04
K4B2G0446D
K4B2G0846D
datasheet
DDR3L SDRAM
3.2 x8 Package Pinout (Top view) : 78ball FBGA Package
1
2
3
4
5
6
7
8
9
VSS
VSS
VDD
VSS
VDD
VDDQ
VSSQ
VSSQ
VDDQ
NC
A
B
C
D
E
F
NC
DQ0
DQS
DQS
DQ4
RAS
CAS
WE
NU/TDQS
DM/TDQS
DQ1
A
B
C
D
E
F
VSSQ
VSSQ
VDDQ
VSSQ
VREFDQ
NC
DQ2
DQ6
VDDQ
VSS
DQ3
VSS
VDD
DQ7
CK
DQ5
VSS
VDD
VDD
CS
G
H
J
ODT
NC
CK
CKE
NC
G
H
J
A10/AP
NC
ZQ
VSS
VREFCA
VSS
BA0
A3
BA2
A0
VDD
VSS
VDD
VSS
VDD
VSS
VDD
VSS
K
L
A12/BC
A1
BA1
A4
K
L
A5
A2
M
N
A7
A9
A11
A6
M
N
RESET
A13
A14
A8
1
2
3
4
5
6
7
8
9
Ball Locations (x8)
A
B
C
D
E
F
Populated ball
Ball not populated
G
H
J
Top view
(See the balls through the package)
K
L
M
N
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Rev. 1.04
K4B2G0446D
K4B2G0846D
datasheet
DDR3L SDRAM
3.3 FBGA Package Dimension (x4/x8)
Units : Millimeters
7.50 ± 0.10
A
#A1 INDEX MARK
B
0.80
(Datum A)
(Datum B)
1.60
6
3.20
9
8
7
5 4 3 2 1
A
B
C
D
E
F
G
H
J
K
L
M
N
(0.95)
78 - ∅0.45 Solder ball
(Post Reflow ∅0.50 ± 0.05)
MOLDING AREA
(1.90)
0.2
M
A B
BOTTOM VIEW
7.50 ± 0.10
#A1
0.35 ± 0.05
1.10 ± 0.10
TOP VIEW
- 8 -
Rev. 1.04
K4B2G0446D
K4B2G0846D
datasheet
DDR3L SDRAM
4. Input/Output Functional Description
[ Table 3 ] Input/Output function description
Symbol
Type
Function
Clock: CK and CK are differential clock inputs. All address and control input signals are sampled on the crossing of
CK, CK
Input
the positive edge of CK and negative edge of CK. Output (read) data is referenced to the crossings of CK and CK
Clock Enable: CKE HIGH activates, and CKE Low deactivates, internal clock signals and device input buffers and
output drivers. Taking CKE Low provides Precharge Power-Down and Self Refresh operation (all banks idle), or
Active Power-Down (Row Active in any bank). CKE is asynchronous for self refresh exit. After VREFCA has become
CKE
CS
Input
stable during the power on and initialization sequence, it must be maintained during all operations (including Self-
Refresh). CKE must be maintained high throughout read and write accesses. Input buffers, excluding CK, CK, ODT
and CKE are disabled during power-down. Input buffers, excluding CKE, are disabled during Self -Refresh.
Chip Select: All commands are masked when CS is registered HIGH. CS provides for external Rank selection on
Input
Input
systems with multiple Ranks. CS is considered part of the command code.
On Die Termination: ODT (registered HIGH) enables termination resistance internal to the DDR3 SDRAM. When
enabled, ODT is only applied to each DQ, DQS, DQS and DM/TDQS, NU/TDQS (When TDQS is enabled via Mode
Register A11=1 in MR1) signal for x8 configurations. The ODT pin will be ignored if the Mode Register (MR1) is pro-
grammed to disable ODT.
ODT
RAS, CAS, WE
Input
Input
Command Inputs: RAS, CAS and WE (along with CS) define the command being entered.
Input Data Mask: DM is an input mask signal for write data. Input data is masked when DM is sampled HIGH coinci-
dent with that input data during a Write access. DM is sampled on both edges of DQS. For x8 device, the function of
DM or TDQS/TDQS is enabled by Mode Register A11 setting in MR1.
DM
(DMU), (DML)
Bank Address Inputs: BA0 - BA2 define to which bank an Active, Read, Write or Precharge command is being
applied. Bank address also determines if the mode register or extended mode register is to be accessed during a
MRS cycle.
BA0 - BA2
A0 - A14
Input
Input
Address Inputs: Provided the row address for Active commands and the column address for Read/Write commands
to select one location out of the memory array in the respective bank. (A10/AP and A12/BC have additional functions,
see below)
The address inputs also provide the op-code during Mode Register Set commands.
Autoprecharge: A10 is sampled during Read/Write commands to determine whether Autoprecharge should be per-
formed to the accessed bank after the Read/Write operation. (HIGH:Autoprecharge; LOW: No Autoprecharge)
A10 is sampled during a Precharge command to determine whether the Precharge applies to one bank (A10 LOW) or
all banks (A10 HIGH). if only one bank is to be precharged, the bank is selected by bank addresses.
A10 / AP
A12 / BC
Input
Burst Chop:A12 is sampled during Read and Write commands to determine if burst chop(on-the-fly) will be per-
Input
Input
formed. (HIGH : no burst chop, LOW : burst chopped). See command truth table for details
Active Low Asynchronous Reset: Reset is active when RESET is LOW, and inactive when RESET is HIGH.
RESET must be HIGH during normal operation. RESET is a CMOS rail to rail signal with DC high and low at 80% and
20% of VDD, i.e.
RESET
DQ
Input/Output Data Input/ Output: Bi-directional data bus.
Data Strobe: Output with read data, input with write data. Edge-aligned with read data, centered in write data. For the
x16, DQSL: corresponds to the data on DQL0-DQL7; DQSU corresponds to the data on DQU0-DQU7. The data
Input/Output strobe DQS, DQSL and DQSU are paired with differential signals DQS, DQSL and DQSU, respectively, to provide dif-
ferential pair signaling to the system during reads and writes. DDR3 SDRAM supports differential data strobe only and
does not support single-ended.
DQS, (DQS)
Termination Data Strobe: TDQS/TDQS is applicable for X8 DRAMs only. When enabled via Mode Register A11=1 in
MR1, DRAM will enable the same termination resistance function on TDQS/TDQS that is applied to DQS/DQS. When
disabled via mode register A11=0 in MR1, DM/TDQS will provide the data mask function and TDQS is not used. x4/
TDQS, (TDQS)
Output
x16 DRAMs must disable the TDQS function via mode register A11=0 in MR1.
NC
No Connect: No internal electrical connection is present.
VDDQ
Supply
Supply
Supply
Supply
Supply
Supply
Supply
DQ Power Supply: 1.35V(1.28V~1.45V) or & 1.5V(1.425V~1.575V)
DQ Ground
VSSQ
VDD
Power Supply: 1.35V(1.28V~1.45V) or & 1.5V(1.425V~1.575V)
Ground
VSS
VREFDQ
VREFCA
ZQ
Reference voltage for DQ
Reference voltage for CA
Reference Pin for ZQ calibration
NOTE : Input only pins (BA0-BA2, A0-A14, RAS, CAS, WE, CS, CKE, ODT and RESET) do not supply termination.
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Rev. 1.04
K4B2G0446D
K4B2G0846D
datasheet
DDR3L SDRAM
5. DDR3 SDRAM Addressing
1Gb
Configuration
# of Bank
256Mb x 4
8
128Mb x 8
8
64Mb x 16
8
Bank Address
Auto precharge
Row Address
BA0 - BA2
A10/AP
A0 - A13
A0 - A9,A11
A12/BC
1 KB
BA0 - BA2
A10/AP
A0 - A13
A0 - A9
A12/BC
1 KB
BA0 - BA2
A10/AP
A0 - A12
A0 - A9
A12/BC
2 KB
Column Address
BC switch on the fly
Page size *1
2Gb
Configuration
# of Bank
512Mb x 4
8
256Mb x 8
8
128Mb x 16
8
Bank Address
Auto precharge
Row Address
BA0 - BA2
A10/AP
A0 - A14
A0 - A9,A11
A12/BC
1 KB
BA0 - BA2
A10/AP
A0 - A14
A0 - A9
A12/BC
1 KB
BA0 - BA2
A10/AP
A0 - A13
A0 - A9
A12/BC
2 KB
Column Address
BC switch on the fly
Page size *1
4Gb
Configuration
# of Bank
1Gb x 4
8
512Mb x 8
8
256Mb x 16
8
Bank Address
Auto precharge
Row Address
BA0 - BA2
A10/AP
A0 - A15
A0 - A9,A11
A12/BC
1 KB
BA0 - BA2
A10/AP
A0 - A15
A0 - A9
A12/BC
1 KB
BA0 - BA2
A10/AP
A0 - A14
A0 - A9
A12/BC
2 KB
Column Address
BC switch on the fly
Page size *1
8Gb
Configuration
# of Bank
2Gb x 4
8
1Gb x 8
8
512Mb x 16
8
Bank Address
Auto precharge
Row Address
BA0 - BA2
A10/AP
BA0 - BA2
A10/AP
A0 - A15
A0 - A9,A11
A12/BC
2 KB
BA0 - BA2
A10/AP
A0 - A15
A0 - A9
A12/BC
2 KB
A0 - A15
A0 - A9,A11,A13
A12/BC
Column Address
BC switch on the fly
Page size *1
2 KB
NOTE 1 : Page size is the number of bytes of data delivered from the array to the internal sense amplifiers when an ACTIVE command is registered.
COLBITS
Page size is per bank, calculated as follows:
page size = 2
* ORG÷8
where, COLBITS = the number of column address bits, ORG = the number of I/O (DQ) bits
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Rev. 1.04
K4B2G0446D
K4B2G0846D
datasheet
DDR3L SDRAM
6. Absolute Maximum Ratings
6.1 Absolute Maximum DC Ratings
[ Table 4 ] Absolute Maximum DC Ratings
Symbol
Parameter
Rating
Units
NOTE
VDD
Voltage on VDD pin relative to Vss
-0.4 V ~ 1.975 V
-0.4 V ~ 1.975 V
-0.4 V ~ 1.975 V
-55 to +100
V
1,3
VDDQ
Voltage on VDDQ pin relative to Vss
Voltage on any pin relative to Vss
Storage Temperature
V
V
1,3
1
V
IN, VOUT
TSTG
°C
1, 2
NOTE :
1. Stresses greater than those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress rating only and functional operation of the
device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions
for extended periods may affect reliability.
2. Storage Temperature is the case surface temperature on the center/top side of the DRAM. For the measurement conditions, please refer to JESD51-2 standard.
3. V
and V
must be within 300mV of each other at all times;and V
must be not greater than 0.6 x V
, When V and V
are less than 500mV; V
may be
REF
DD
DDQ
REF
DDQ
DD
DDQ
equal to or less than 300mV.
6.2 DRAM Component Operating Temperature Range
[ Table 5 ] Temperature Range
Symbol
Parameter
rating
Unit
NOTE
TOPER
Operating Temperature Range
0 to 95
°C
1, 2, 3
NOTE :
1. Operating Temperature T
is the case surface temperature on the center/top side of the DRAM. For measurement conditions, please refer to the JEDEC document
OPER
JESD51-2.
2. The Normal Temperature Range specifies the temperatures where all DRAM specifications will be supported. During operation, the DRAM case temperature must be main-
tained between 0-85°C under all operating conditions
3. Some applications require operation of the Extended Temperature Range between 85°C and 95°C case temperature. Full specifications are guaranteed in this range, but the
following additional conditions apply:
a) Refresh commands must be doubled in frequency, therefore reducing the refresh interval tREFI to 3.9us.
b) If Self-Refresh operation is required in the Extended Temperature Range, then it is mandatory to either use the Manual Self-Refresh mode with Extended Temperature
Range capability (MR2 A6 = 0 and MR2 A7 = 1 ), in this case IDD6 current can be increased around 10~20% than normal Temperature range.
b
b
7. AC & DC Operating Conditions
7.1 Recommended DC operating Conditions
[ Table 6 ] Recommended DC Operating Conditions
Rating
Typ.
1.35
1.5
Symbol
VDD
Parameter
Operation Voltage
Units
NOTE
Min.
1.283
1.425
1.283
1.425
Max.
1.45
1.35V
1.5V
V
V
V
V
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
Supply Voltage
1.575
1.45
1.35V
1.5V
1.35
1.5
VDDQ
Supply Voltage for Output
1.575
NOTE :
1. Under all conditions V
must be less than or equal to V
.
DDQ
DD
2. V
tracks with V . AC parameters are measured with V and V
tied together.
DDQ
DD
DD
DDQ
3. VDD & VDDQ rating are determined by operation voltage.
- 11 -
Rev. 1.04
K4B2G0446D
K4B2G0846D
datasheet
DDR3L SDRAM
8. AC & DC Input Measurement Levels
8.1 AC & DC Logic input levels for single-ended signals
[ Table 7 ] Single-ended AC & DC input levels for Command and Address
DDR3-800/1066/1333/1600
Symbol
Parameter
Unit NOTE
Min.
Max.
1.35V
1,5a)
1,6a)
1,2
VIH.CA(DC90)
VIL.CA(DC90)
VIH.CA(AC160)
VREF + 90
VSS
VDD
DC input logic high
DC input logic low
AC input logic high
AC input logic low
AC input logic high
AC input logic lowM
mV
mV
mV
mV
mV
mV
VREF - 90
VREF + 160
Note 2
V
IL.CA(AC160)
IH.CA(AC135)
IL.CA(AC135)
VREF - 160
Note 2
1,2
V
VREF+135
Note 2
1,2
V
VREF-135
Note 2
1,2
Reference Voltage for ADD,
CMD inputs
V
REFCA(DC)
0.49*VDD
0.51*VDD
V
3,4
1.5V
1,5b)
VIH.CA(DC100)
VIL.CA(DC100)
VIH.CA(AC175)
VREF + 100
VSS
VDD
DC input logic high
DC input logic low
AC input logic high
AC input logic low
AC input logic high
AC input logic low
mV
mV
mV
mV
mV
mV
1,6b)
1,2,7
1,2,8
1,2,7
1,2,8
VREF - 100
VREF + 175
Note 2
V
IL.CA(AC175)
IH.CA(AC150)
IL.CA(AC150)
VREF - 175
Note 2
V
VREF+150
Note 2
V
VREF-150
Note 2
Reference Voltage for ADD,
CMD inputs
V
REFCA(DC)
0.49*VDD
0.51*VDD
V
3,4
NOTE :
1. For input only pins except RESET, V
= V
(DC)
REFCA
REF
2. See "Overshoot and Undershoot specifications" section.
3. The AC peak noise on V may not allow V to deviate from V
(DC) by more than ± 1% V (for reference : approx. ± 15mV)
REF
REF
REF
DD
4. For reference : approx. V /2 ± 15mV
DD
a)
b)
5. V (dc) is used as a simplified symbol for V
(
1.35V : DC90, 1.5V : DC100)
IH
IH.CA
a)
b)
6. V (dc) is used as a simplified symbol for V
(
1.35V : DC90, 1.5V : DC100)
IL
IL.CA
7. V (ac) is used as a simplified symbol for V
IH
(AC175) and V
(AC150); V
(AC175) value is used when V
+ 175mV is referenced and V
(AC150) value is
IH.CA
IH.CA
IH.CA
IH.CA
REF
used when VREF + 150mV is referenced.
8. V (ac) is used as a simplified symbol for V
(AC175) and V
(AC150); V
(AC175) value is used when V
- 175mV is referenced and V
(AC150) value is used
IL.CA
IL
IL.CA
IL.CA
IL.CA
REF
when V
- 150mV is referenced.
REF
- 12 -
Rev. 1.04
K4B2G0446D
K4B2G0846D
datasheet
DDR3L SDRAM
[ Table 8 ] Single-ended AC & DC input levels for DQ and DM
DDR3-800/1066
DDR3-1333/1600
Symbol
Parameter
Unit NOTE
Min.
Max.
1.35V
Min.
Max.
1,5a)
1,6a)
1,2
VIH.DQ(DC90)
VIL.DQ(DC90)
VIH.DQ(AC160)
VREF + 90
VSS
VDD
VREF + 90
VSS
VDD
DC input logic high
DC input logic low
AC input logic high
AC input logic low
AC input logic high
AC input logic low
mV
mV
mV
mV
mV
mV
VREF - 90
VREF - 90
VREF + 160
Note 2
-
-
-
V
IL.DQ(AC160)
IH.DQ(AC135)
IL.DQ(AC135)
VREF - 160
Note 2
-
1,2
V
VREF + 135
VREF + 135
Note 2
Note 2
VREF - 135
1,2
V
VREF - 135
Note 2
Note 2
1,2
Reference Voltage for DQ,
DM inputs
VREFDQ(DC)
0.49*VDD
0.51*VDD
0.49*VDD
0.51*VDD
V
3,4
1.5V
1,5b)
VIH.DQ(DC100)
VIL.DQ(DC100)
VIH.DQ(AC175)
VREF + 100
VSS
VDD
VREF + 100
VSS
VDD
DC input logic high
DC input logic low
AC input logic high
AC input logic low
AC input logic high
AC input logic low
mV
mV
mV
mV
mV
mV
1,6b)
1,2,7
1,2,8
1,2,7
1,2,8
VREF - 100
VREF - 100
VREF + 175
NOTE 2
-
-
V
IL.DQ(AC175)
IH.DQ(AC150)
IL.DQ(AC150)
VREF - 175
NOTE 2
-
-
V
VREF + 150
VREF + 150
NOTE 2
NOTE 2
VREF - 150
V
VREF - 150
NOTE 2
NOTE 2
Reference Voltage for DQ,
DM inputs
VREFDQ(DC)
0.49*VDD
0.51*VDD
0.49*VDD
0.51*VDD
V
3,4
NOTE :
1. For input only pins except RESET, V
= V
(DC)
REFDQ
REF
2. See ’Overshoot/Undershoot Specification’ on page 22.
3. The AC peak noise on V may not allow V to deviate from V
(DC) by more than ± 1% V (for reference : approx. ± 15mV)
REF
REF
REF
b)
DD
4. For reference : approx. V /2 ± 15mV
DD
a)
5. V (dc) is used as a simplified symbol for V
(
1.35V : DC90, 1.5V : DC100)
IH
IH.CA
a)
b)
6. V (dc) is used as a simplified symbol for V
(
1.35V : DC90, 1.5V : DC100)
IL
IL.CA
7. V (ac) is used as a simplified symbol for V
(AC175), V
(AC150) ; V
(AC175) value is used when V
+ 175mV is referenced, V
(AC150) value is used
IH
IH.DQ
IH.DQ
IH.DQ
REF
IH.DQ
when V
+ 150mV is referenced.
REF
8. V (ac) is used as a simplified symbol for V
(AC175), V
(AC150) ; V
(AC175) value is used when V
- 175mV is referenced, V
(AC150) value is used when
IL.DQ
IL
IL.DQ
IL.DQ
IL.DQ
REF
V
- 150mV is referenced.
REF
- 13 -
Rev. 1.04
K4B2G0446D
K4B2G0846D
datasheet
DDR3L SDRAM
8.2 V Tolerances
REF
The dc-tolerance limits and ac-noise limits for the reference voltages VREFCA and VREFDQ are illustrate in Figure 1. It shows a valid reference voltage
V
V
REF(t) as a function of time. (VREF stands for VREFCA and VREFDQ likewise).
REF(DC) is the linear average of VREF(t) over a very long period of time (e.g. 1 sec). This average has to meet the min/max requirement in Table 7 on
page 12. Furthermore VREF(t) may temporarily deviate from VREF(DC) by no more than ± 1% VDD
.
voltage
VDD
VSS
time
Figure 1. Illustration of VREF(DC) tolerance and VREF ac-noise limits
The voltage levels for setup and hold time measurements VIH(AC), VIH(DC), VIL(AC) and VIL(DC) are dependent on VREF
.
"VREF" shall be understood as VREF(DC), as defined in Figure 1 .
This clarifies, that dc-variations of VREF affect the absolute voltage a signal has to reach to achieve a valid high or low level and therefore the time to
which setup and hold is measured. System timing and voltage budgets need to account for VREF(DC) deviations from the optimum position within the
data-eye of the input signals.
This also clarifies that the DRAM setup/hold specification and derating values need to include time and voltage associated with VREF ac-noise. Timing
and voltage effects due to ac-noise on VREF up to the specified limit (+/-1% of VDD) are included in DRAM timings and their associated deratings.
- 14 -
Rev. 1.04
K4B2G0446D
K4B2G0846D
datasheet
DDR3L SDRAM
8.3 AC & DC Logic Input Levels for Differential Signals
8.3.1 Differential signals definition
tDVAC
VIH.DIFF.AC.MIN
VIH.DIFF.MIN
0.0
half cycle
VIL.DIFF.MAX
VIL.DIFF.AC.MAX
tDVAC
time
Figure 2. Definition of differential ac-swing and "time above ac level" tDVAC
8.3.2 Differential swing requirement for clock (CK - CK) and strobe (DQS - DQS)
[ Table 9 ] Differential AC & DC Input Levels
DDR3-800/1066/1333/1600
Symbol
Parameter
1.35V
1.5V
unit
NOTE
min
+0.18
max
NOTE 3
min
+0.20
max
NOTE 3
VIHdiff
VILdiff
IHdiff(AC)
ILdiff(AC)
differential input high
differential input low
V
V
V
V
1
1
2
2
NOTE 3
-0.18
NOTE 3
-0.20
V
2 x (VIH(AC) - VREF
NOTE 3
)
2 x (VIH(AC) - VREF
NOTE 3
)
differential input high ac
differential input low ac
NOTE 3
NOTE 3
V
2 x (VIL(AC) - VREF
)
2 x (VIL(AC) - VREF)
NOTE :
1. Used to define a differential signal slew-rate.
2. for CK - CK use V /V (AC) of ADD/CMD and V
; for DQS - DQS use V /V (AC) of DQs and V
; if a reduced ac-high or ac-low level is used for a signal group,
IH IL
REFCA
IH IL
REFDQ
then the reduced level applies also here.
3. These values are not defined, however they single-ended signals CK, CK, DQS, DQS need to be within the respective limits (V (DC) max, V (DC)min) for single-ended sig-
IH
IL
nals as well as the limitations for overshoot and undershoot. Refer to "overshoot and Undersheet Specification"
- 15 -
Rev. 1.04
K4B2G0446D
K4B2G0846D
datasheet
DDR3L SDRAM
[ Table 10 ] Allowed time before ringback (tDVAC) for CK - CK and DQS - DQS (1.35V)
tDVAC [ps] @ |VIH/Ldiff(AC)| = 320mV
Slew Rate [V/ns]
tDVAC [ps] @ |VIH/Ldiff(AC)| = 270mV
min
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
max
min
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
max
> 4.0
4.0
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
3.0
2.0
1.8
1.6
1.4
1.2
1.0
< 1.0
[ Table 11 ] Allowed time before ringback (tDVAC) for CK - CK and DQS - DQS (1.5V)
tDVAC [ps] @ |VIH/Ldiff(AC)| = 350mV
Slew Rate [V/ns]
tDVAC [ps] @ |VIH/Ldiff(AC)| = 300mV
min
75
57
50
38
34
29
22
13
0
max
min
175
170
167
163
162
161
159
155
150
150
max
> 4.0
4.0
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
3.0
2.0
1.8
1.6
1.4
1.2
1.0
< 1.0
0
- 16 -
Rev. 1.04
K4B2G0446D
K4B2G0846D
datasheet
DDR3L SDRAM
8.3.3 Single-ended requirements for differential signals
Each individual component of a differential signal (CK, DQS, DQSL, DQSU, CK, DQS, DQSL, or DQSU) has also to comply with certain requirements for
single-ended signals.
CK and CK have to approximately reach VSEHmin / VSELmax [approximately equal to the ac-levels { VIH(AC) / VIL(AC)} for ADD/CMD signals] in every
half-cycle.
DQS, DQSL, DQSU, DQS, DQSL have to reach VSEHmin / VSELmax [approximately the ac-levels { VIH(AC) / VIL(AC)} for DQ signals] in every half-cycle
proceeding and following a valid transition.
Note that the applicable ac-levels for ADD/CMD and DQ’s might be different per speed-bin etc. E.g. if VIH150(AC)/VIL150(AC) is used for ADD/CMD sig-
nals, then these ac-levels apply also for the single-ended signals CK and CK .
VDD or VDDQ
VSEH min
VSEH
VDD/2 or VDDQ/2
CK or DQS
VSEL max
VSEL
VSS or VSSQ
time
Figure 3. Single-ended requirement for differential signals
Note that while ADD/CMD and DQ signal requirements are with respect to VREF, the single-ended components of differential signals have a requirement
with respect to VDD/2; this is nominally the same. The transition of single-ended signals through the ac-levels is used to measure setup time. For single-
ended components of differential signals the requirement to reach VSELmax, VSEHmin has no bearing on timing, but adds a restriction on the common
mode characteristics of these signals.
[ Table 12 ] Single-ended levels for CK, DQS, DQSL, DQSU, CK, DQS, DQSL, or DQSU
DDR3-800/1066/1333/1600
Symbol
Parameter
Unit
NOTE
Min
Max
(VDD/2)+0.175
Single-ended high-level for strobes
Single-ended high-level for CK, CK
Single-ended low-level for strobes
Single-ended low-level for CK, CK
NOTE3
V
V
V
V
1, 2
1, 2
1, 2
1, 2
VSEH
(VDD/2)+0.175
NOTE3
NOTE3
(VDD/2)-0.175
(VDD/2)-0.175
VSEL
NOTE3
NOTE :
1. For CK, CK use V /V (AC) of ADD/CMD; for strobes (DQS, DQS, DQSL, DQSL, DQSU, DQSU) use V /V (AC) of DQs.
IH IL
IH IL
2. V (AC)/V (AC) for DQs is based on V
; V (AC)/V (AC) for ADD/CMD is based on V
; if a reduced ac-high or ac-low level is used for a signal group, then the
REFCA
IH
IL
REFDQ
IH
IL
reduced level applies also here
3. These values are not defined, however the single-ended signals CK, CK, DQS, DQS, DQSL, DQSL, DQSU, DQSU need to be within the respective
limits (V (DC) max, V (DC)min) for single-ended signals as well as the limitations for overshoot and undershoot. Refer to "Overshoot and Undershoot
IH
IL
Specification"
- 17 -
Rev. 1.04
K4B2G0446D
K4B2G0846D
datasheet
DDR3L SDRAM
8.4 Differential Input Cross Point Voltage
To guarantee tight setup and hold times as well as output skew parameters with respect to clock and strobe, each cross point voltage of differential input
signals (CK, CK and DQS, DQS) must meet the requirements in below table. The differential input cross point voltage VIX is measured from the actual
cross point of true and complement signal to the mid level between of VDD and VSS
.
VDD
CK, DQS
VIX
VDD/2
VIX
VIX
CK, DQS
VSS
Figure 4. VIX Definition
[ Table 13 ] Cross point voltage for differential input signals (CK, DQS) : 1.35V
DDR3L-800/1066/1333/1600
Symbol
Parameter
Unit
NOTE
Min
-150
-150
Max
150
150
VIX
VIX
Differential Input Cross Point Voltage relative to VDD/2 for CK,CK
Differential Input Cross Point Voltage relative to VDD/2 for DQS,DQS
mV
mV
1
NOTE :
1. The relationbetween Vix Min/Max and VSEL/VSEH should satisfy following.
(VDD/2) + Vix(Min) - VSEL ≥ 25mV
VSEH - ((VDD/2) + Vix(Max)) ≥ 25mV
[ Table 14 ] Cross point voltage for differential input signals (CK, DQS) : 1.5V
DDR3-800/1066/1333/1600
Symbol
Parameter
Unit
NOTE
Min
-150
-175
-150
Max
150
175
150
mV
mV
mV
VIX
VIX
Differential Input Cross Point Voltage relative to VDD/2 for CK,CK
Differential Input Cross Point Voltage relative to VDD/2 for DQS,DQS
1
NOTE :
1. Extended range for V is only allowed for clock and if single-ended clock input signals CK and CK are monotonic, have a single-ended swing V
IX
/ V
of at least V /2
SEH DD
SEL
±250 mV, and the differential slew rate of CK-CK is larger than 3 V/ ns.
- 18 -
Rev. 1.04
K4B2G0446D
K4B2G0846D
datasheet
DDR3L SDRAM
8.5 Slew rate definition for Differential Input Signals
See 14.3 “Address/Command Setup, Hold and Derating :” on page 50 for single-ended slew rate definitions for address and command signals.
See 14.4 “Data Setup, Hold and Slew Rate Derating :” on page 56 for single-ended slew rate definitions for data signals.
8.6 Slew rate definitions for Differential Input Signals
Input slew rate for differential signals (CK, CK and DQS, DQS) are defined and measured as shown in Table 15 and Figure 5.
[ Table 15 ] Differential input slew rate definition
Measured
Description
Defined by
From
To
VIHdiffmin - VILdiffmax
Delta TRdiff
VILdiffmax
VIHdiffmin
Differential input slew rate for rising edge (CK-CK and DQS-DQS)
VIHdiffmin - VILdiffmax
Delta TFdiff
VIHdiffmin
VILdiffmax
Differential input slew rate for falling edge (CK-CK and DQS-DQS)
NOTE :
The differential signal (i.e. CK - CK and DQS - DQS) must be linear between these thresholds.
V
IHdiffmin
ILdiffmax
0
V
delta TFdiff
delta TRdiff
Figure 5. Differential Input Slew Rate definition for DQS, DQS, and CK, CK
9. AC & DC Output Measurement Levels
9.1 Single-ended AC & DC Output Levels
[ Table 16 ] Single-ended AC & DC output levels
Symbol
Parameter
DDR3-800/1066/1333/1600
Units
NOTE
VOH(DC)
DC output high measurement level (for IV curve linearity)
0.8 x VDDQ
0.5 x VDDQ
V
V
OM(DC)
VOL(DC)
OH(AC)
OL(AC)
DC output mid measurement level (for IV curve linearity)
DC output low measurement level (for IV curve linearity)
AC output high measurement level (for output SR)
AC output low measurement level (for output SR)
V
V
V
V
0.2 x VDDQ
V
VTT + 0.1 x VDDQ
VTT - 0.1 x VDDQ
1
1
V
NOTE : 1. The swing of +/-0.1 x V
load of 25Ω to V =V
is based on approximately 50% of the static single ended output high or low swing with a driver impedance of 40Ω and an effective test
/2.
DDQ
TT
DDQ
9.2 Differential AC & DC Output Levels
[ Table 17 ] Differential AC & DC output levels
Symbol
Parameter
DDR3-800/1066/1333/1600
Units
NOTE
VOHdiff(AC)
AC differential output high measurement level (for output SR)
+0.2 x VDDQ
V
1
VOLdiff(AC)
AC differential output low measurement level (for output SR)
-0.2 x VDDQ
V
1
NOTE : 1. The swing of +/-0.2xV
load of 25Ω to V =V
is based on approximately 50% of the static single ended output high or low swing with a driver impedance of 40Ω and an effective test
/2 at each of the differential outputs.
DDQ
TT
DDQ
- 19 -
Rev. 1.04
K4B2G0446D
K4B2G0846D
datasheet
DDR3L SDRAM
9.3 Single-ended Output Slew Rate
With the reference load for timing measurements, output slew rate for falling and rising edges is defined and measured between VOL(AC) and VOH(AC)
for single ended signals as shown in Table 18 and Figure 6.
[ Table 18 ] Single-ended output slew rate definition
Measured
Description
Defined by
From
To
VOH(AC)-VOL(AC)
Delta TRse
VOL(AC)
VOH(AC)
Single ended output slew rate for rising edge
Single ended output slew rate for falling edge
VOH(AC)-VOL(AC)
Delta TFse
VOH(AC)
VOL(AC)
NOTE : Output slew rate is verified by design and characterization, and may not be subject to production test.
[ Table 19 ] Single-ended output slew rate
DDR3-800
DDR3-1066
DDR3-1333
DDR3-1600
Operation
Voltage
Parameter
Symbol
Units
Min
Max
Min
1.75
2.5
Max
Min
1.75
2.5
Max
Min
1.75
2.5
Max
51)
5
51)
5
51)
5
51)
5
1.35V
1.5V
1.75
2.5
V/ns
V/ns
Single ended output slew rate
Description : SR : Slew Rate
SRQse
Q : Query Output (like in DQ, which stands for Data-in, Query-Output)
se : Single-ended Signals
For Ron = RZQ/7 setting
NOTE : 1) In two cased, a maximum slew rate of 6V/ns applies for a single DQ signal within a byte lane.
- Case_1 is defined for a single DQ signal within a byte lane which is switching into a certain direction (either from high to low of low to high) while all remaining DQ signals in
the same byte lane are static (i.e they stay at either high or low).
- Case_2 is defined for a single DQ signals in the same byte lane are switching into the opposite direction (i.e. from low to high or high to low respectively). For the remaining
DQ signal switching into the opposite direction, the regular maximum limit of 5 V/ns applies.
V
OH(AC)
V
V
TT
OL(AC)
delta TFse
delta TRse
Figure 6. Single-ended Output Slew Rate Definition
- 20 -
Rev. 1.04
K4B2G0446D
K4B2G0846D
datasheet
DDR3L SDRAM
9.4 Differential Output Slew Rate
With the reference load for timing measurements, output slew rate for falling and rising edges is defined and measured between VOLdiff(AC) and VOH-
diff(AC) for differential signals as shown in Table 20 and Figure 7.
[ Table 20 ] Differential output slew rate definition
Measured
Description
Defined by
From
To
VOHdiff(AC)-VOLdiff(AC)
Delta TRdiff
VOLdiff(AC)
VOHdiff(AC)
Differential output slew rate for rising edge
Differential output slew rate for falling edge
VOHdiff(AC)-VOLdiff(AC)
Delta TFdiff
VOHdiff(AC)
VOLdiff(AC)
NOTE : Output slew rate is verified by design and characterization, and may not be subject to production test.
[ Table 21 ] Differential output slew rate
DDR3-800
DDR3-1066
DDR3-1333
DDR3-1600
Operation
Voltage
Parameter
Symbol
Units
Min
Max
12
Min
3.5
5
Max
12
Min
3.5
5
Max
12
Min
3.5
5
Max
12
1.35V
1.5V
3.5
5
V/ns
V/ns
Differential output slew rate
Description : SR : Slew Rate
SRQdiff
10
10
10
10
Q : Query Output (like in DQ, which stands for Data-in, Query-Output)
diff : Differential Signals
For Ron = RZQ/7 setting
V
(AC)
OHdiff
V
V
TT
(AC)
OLdiff
delta TFdiff
delta TRdiff
Figure 7. Differential Output Slew Rate Definition
9.5 Reference Load for AC Timing and Output Slew Rate
Figure 8 represents the effective reference load of 25 ohms used in defining the relevant AC timing parameters of the device as well as output slew rate
measurements.
It is not intended as a precise representation of any particular system environment or a depiction of the actual load presented by a production tester. Sys-
tem designers should use IBIS or other simulation tools to correlate the timing reference load to a system environment. Manufacturers correlate to their
production test conditions, generally one or more coaxial transmission lines terminated at the tester electronics.
VDDQ
DQ
DQS
DQS
CK/CK
DUT
VTT = VDDQ/2
25Ω
Reference
Point
Figure 8. Reference Load for AC Timing and Output Slew Rate
- 21 -
Rev. 1.04
K4B2G0446D
K4B2G0846D
datasheet
DDR3L SDRAM
9.6 Overshoot/Undershoot Specification
9.6.1 Address and Control Overshoot and Undershoot specifications
[ Table 22 ] AC overshoot/undershoot specification for Address and Control pins (A0-A12, BA0-BA2. CS. RAS. CAS. WE. CKE, ODT)
Specification
Parameter
Unit
DDR3-800
1.35V
DDR3-1066
DDR3-1333
DDR3-1600
Maximum peak amplitude allowed for overshoot area (See Figure 9)
Maximum peak amplitude allowed for undershoot area (See Figure 9)
Maximum overshoot area above VDD (See Figure 9)
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
V
V
V-ns
Maximum undershoot area below VSS (See Figure 9)
TBD
TBD
TBD
TBD
V-ns
1.5V
Maximum peak amplitude allowed for overshoot area (See Figure 9)
Maximum peak amplitude allowed for undershoot area (See Figure 9)
Maximum overshoot area above VDD (See Figure 9)
0.4V
0.4V
0.4V
0.4V
0.4V
0.4V
0.4V
0.4V
V
V
0.67V-ns
0.5V-ns
0.4V-ns
0.33V-ns
V-ns
Maximum undershoot area below VSS (See Figure 9)
0.67V-ns
0.5V-ns
0.4V-ns
0.33V-ns
V-ns
Maximum Amplitude
Overshoot Area
VDD
VSS
Volts
(V)
Undershoot Area
Maximum Amplitude
Time (ns)
Figure 9. Address and Control Overshoot and Undershoot Definition
- 22 -
Rev. 1.04
K4B2G0446D
K4B2G0846D
datasheet
DDR3L SDRAM
9.6.2 Clock, Data, Strobe and Mask Overshoot and Undershoot Specifications
[ Table 23 ] AC overshoot/undershoot specification for Clock, Data, Strobe and Mask (DQ, DQS, DQS, DM, CK, CK)
Specification
Parameter
Unit
DDR3-800
1.35V
DDR3-1066
DDR3-1333
DDR3-1600
Maximum peak amplitude allowed for overshoot area (See Figure 10)
Maximum peak amplitude allowed for undershoot area (See Figure 10)
Maximum overshoot area above VDDQ (See Figure 10)
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
V
V
V-ns
Maximum undershoot area below VSSQ (See Figure 10)
TBD
TBD
TBD
TBD
V-ns
1.5V
Maximum peak amplitude allowed for overshoot area (See Figure 10)
Maximum peak amplitude allowed for undershoot area (See Figure 10)
Maximum overshoot area above VDDQ (See Figure 10)
0.4V
0.4V
0.4V
0.4V
0.4V
0.4V
0.4V
0.4V
V
V
0.25V-ns
0.25V-ns
0.19V-ns
0.15V-ns
0.13V-ns
V-ns
Maximum undershoot area below VSSQ (See Figure 10)
0.19V-ns
0.15V-ns
0.13V-ns
V-ns
Maximum Amplitude
Overshoot Area
VDDQ
VSSQ
Volts
(V)
Undershoot Area
Maximum Amplitude
Time (ns)
Figure 10. Clock, Data, Strobe and Mask Overshoot and Undershoot Definition
9.7 34ohm Output Driver DC Electrical Characteristics
A functional representation of the output buffer is shown below. Output driver impedance RON is defined by the value of external reference resistor RZQ
as follows:
RON34 = RZQ/7 (Nominal 34.3ohms +/- 10% with nominal RZQ=240ohm)
The individual Pull-up and Pull-down resistors (RONpu and RONpd) are defined as follows
VDDQ-VOUT
under the condition that RONpd is turned off
RONpu =
l Iout l
VOUT
under the condition that RONpu is turned off
RONpd =
l Iout l
Output Driver
VDDQ
Ipu
To
other
circuity
RON
Pu
DQ
Iout
RON
Pd
Vout
VSSQ
Ipd
Figure 11. Output Driver : Definition of Voltages and Currents
- 23 -
Rev. 1.04
K4B2G0446D
K4B2G0846D
datasheet
DDR3L SDRAM
[ Table 24 ] Output Driver DC Electrical Characteristics, assuming RZQ=240ohms ;
entire operating temperature range ; after proper ZQ calibration
RONnom
Resistor
Vout
Min
Nom
Max
Units
Notes
1.35V
V
OLdc = 0.2 x VDDQ
0.6
0.9
0.9
0.9
0.9
0.6
0.6
0.9
0.9
0.9
0.9
0.6
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.15
1.15
1.45
1.45
1.15
1.15
1.15
1.15
1.45
1.45
1.15
1.15
1,2,3
1,2,3
1,2,3
1,2,3
1,2,3
1,2,3
1,2,3
1,2,3
1,2,3
1,2,3
1,2,3
1,2,3
V
OMdc = 0.5 x VDDQ
OHdc = 0.8 x VDDQ
OLdc = 0.2 x VDDQ
VOMdc = 0.5 x VDDQ
OHdc = 0.8 x VDDQ
OLdc = 0.2 x VDDQ
OMdc = 0.5 x VDDQ
OHdc = 0.8 x VDDQ
VOLdc = 0.2 x VDDQ
OMdc = 0.5 x VDDQ
OHdc = 0.8 x VDDQ
RON34pd
V
34Ohms
RZQ/7
V
RON34pu
RON40pd
RON40pu
V
V
V
V
40Ohms
RZQ/6
V
V
Mismatch between Pull-up and Pull-down,
MMpupd
V
OMdc = 0.5 x VDDQ
-10
10
%
1,2,4
1.5V
V
OLdc = 0.2 x VDDQ
OMdc = 0.5 x VDDQ
OHdc = 0.8 x VDDQ
OLdc = 0.2 x VDDQ
OMdc = 0.5 x VDDQ
OHdc = 0.8 x VDDQ
OLdc = 0.2 x VDDQ
OMdc = 0.5 x VDDQ
OHdc = 0.8 x VDDQ
OLdc = 0.2 x VDDQ
OMdc = 0.5 x VDDQ
OHdc = 0.8 x VDDQ
0.6
0.9
0.9
0.9
0.9
0.6
0.6
0.9
0.9
0.9
0.9
0.6
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.1
1.1
1.4
1.4
1.1
1.1
1.1
1.1
1.4
1.4
1.1
1.1
1,2,3
1,2,3
1,2,3
1,2,3
1,2,3
1,2,3
1,2,3
1,2,3
1,2,3
1,2,3
1,2,3
1,2,3
V
RON34pd
V
34Ohms
RZQ/7
V
V
RON34pu
V
V
V
RON40pd
V
40Ohms
RZQ/6
V
V
RON40pu
V
Mismatch between Pull-up and Pull-down,
MMpupd
VOMdc = 0.5 x VDDQ
-10
10
%
1,2,4
NOTE :
1. The tolerance limits are specified after calibration with stable voltage and temperature. For the behavior of the tolerance limits if temperature or voltage changes after calibra-
tion, see following section on voltage and temperature sensitivity
2. The tolerance limits are specified under the condition that V
= V and that V
= V
SSQ SS
DDQ
DD
3. Pull-down and pull-up output driver impedance are recommended to be calibrated at 0.5 X V
. Other calibration schemes may be used to achieve the linearity spec shown
DDQ
above, e.g. calibration at 0.2 X V
and 0.8 X V
DDQ
DDQ
4. Measurement definition for mismatch between pull-up and pull-down, MMpupd: Measure RONpu and RONpd. both at 0.5 X V
:
DDQ
RONpu - RONpd
x 100
MMpupd
=
RONnom
- 24 -
Rev. 1.04
K4B2G0446D
K4B2G0846D
datasheet
DDR3L SDRAM
9.7.1 Output Drive Temperature and Voltage Sensitivity
If temperature and/or voltage change after calibration, the tolerance limits widen according to Table 25 and Table 26.
ΔT = T - T(@calibration); ΔV = VDDQ - VDDQ (@calibration); VDD = VDDQ
*dRONdT and dRONdV are not subject to production test but are verified by design and characterization
[ Table 25 ] Output Driver Sensitivity Definition
Min
Max
Units
RONPU@VOHDC
RON@VOMDC
0.6 - dRONdTH * |ΔT| - dR dVH * |ΔV|
1.1 + dRONdTH * |ΔT| + dR dVH * |ΔV|
RZQ/7
RZQ/7
RZQ/7
ON
ON
0.9 - dRONdTM * |ΔT| - dR dVM * |ΔV|
1.1 + dRONdTM * |ΔT| + dR dVM * |ΔV|
ON
ON
RONPD@VOLDC
0.6 - dRONdTL * |ΔT| - dR dVL * |ΔV|
1.1 + dRONdTL * |ΔT| + dR dVL * |ΔV|
ON
ON
[ Table 26 ] Output Driver Voltage and Temperature Sensitivity
Speed Bin
800/1066/1333
1600
Units
Min
0
Max
1.5
Min
0
Max
1.5
dRONdTM
dRONdVM
dRONdTL
dRONdVL
dRONdTH
dRONdVH
%/°C
%/mV
%/°C
0
0.15
1.5
0
0.13
1.5
0
0
0
0.15
1.5
0
0.13
1.5
%/mV
%/°C
0
0
0
0.15
0
0.13
%/mV
9.8 On-Die Termination (ODT) Levels and I-V Characteristics
On-Die Termination effective resistance RTT is defined by bits A9, A6 and A2 of MR1 register.
ODT is applied to the DQ,DM, DQS/DQS and TDQS,TDQS (x8 devices only) pins.
A functional representation of the on-die termination is shown below. The individual pull-up and pull-down resistors (RTTpu and RTTpd) are defined as
follows :
V
DDQ-VOUT
l Iout l
under the condition that RTTpd is turned off
under the condition that RTTpu is turned off
RTTpu =
RTTpd =
VOUT
l Iout l
Chip in Termination Mode
ODT
VDDQ
Ipu
Iout=Ipd-Ipu
To
RTTPu
other
circuitry
like
DQ
RCV,
...
Iout
RTTPd
VOUT
VSSQ
Ipd
Figure 12. On-Die Termination : Definition of Voltages and Currents
- 25 -
Rev. 1.04
K4B2G0446D
K4B2G0846D
datasheet
DDR3L SDRAM
9.8.1 ODT DC Electrical Characteristics
Table 27 provides and overview of the ODT DC electrical characteristics. They values for RTT60pd120, RTT60pu120, RTT120pd240, RTT120pu240, RTT40pd80,
RTT40pu80, RTT30pd60, RTT30pu60, RTT20pd40, RTT20pu40 are not specification requirements, but can be used as design guide lines:
[ Table 27 ] ODT DC Electrical Characteristics, assuming RZQ=240ohm +/- 1% entire operating temperature range; after proper ZQ calibration
1.35V
MR1 (A9,A6,A2)
RTT
RESISTOR
Vout
Min
Nom
Max
Unit
RZQ
Notes
VOL(DC) 0.2XVDDQ
0.5XVDDQ
0.6
0.9
0.9
0.9
0.9
0.6
0.9
0.6
0.9
0.9
0.9
0.9
0.6
0.9
0.6
0.9
0.9
0.9
0.9
0.6
0.9
0.6
0.9
0.9
0.9
0.9
0.6
0.9
0.6
0.9
0.9
0.9
0.9
0.6
0.9
-5
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.15
1.15
1.45
1.45
1.15
1.15
1.65
1.15
1.15
1.45
1.45
1.15
1.15
1.65
1.15
1.15
1.45
1.45
1.15
1.15
1.65
1.15
1.15
1.45
1.45
1.15
1.15
1.65
1.15
1.15
1.45
1.45
1.15
1.15
1.65
5
1,2,3,4
1,2,3,4
1,2,3,4
1,2,3,4
1,2,3,4
1,2,3,4
1,2,5
RTT120pd240
RZQ
V
OH(DC) 0.8XVDDQ
RZQ
VOL(DC) 0.2XVDDQ
0.5XVDDQ
RZQ
(0,1,0)
120 ohm
RTT120pu240
RZQ
V
OH(DC) 0.8XVDDQ
RZQ
RTT120
VIL(AC) to VIH(AC)
VOL(DC) 0.2XVDDQ
0.5XVDDQ
RZQ/2
RZQ/2
RZQ/2
RZQ/2
RZQ/2
RZQ/2
RZQ/2
RZQ/4
RZQ/3
RZQ/3
RZQ/3
RZQ/3
RZQ/3
RZQ/3
RZQ/6
RZQ/4
RZQ/4
RZQ/4
RZQ/4
RZQ/4
RZQ/4
RZQ/8
RZQ/6
RZQ/6
RZQ/6
RZQ/6
RZQ/6
RZQ/6
RZQ/12
1,2,3,4
1,2,3,4
1,2,3,4
1,2,3,4
1,2,3,4
1,2,3,4
1,2,5
RTT60pd120
V
OH(DC) 0.8XVDDQ
VOL(DC) 0.2XVDDQ
0.5XVDDQ
(0,0,1)
(0,1,1)
(1,0,1)
(1,0,0)
60 ohm
40 ohm
30 ohm
20 ohm
RTT60pu120
V
OH(DC) 0.8XVDDQ
RTT60
VIL(AC) to VIH(AC)
VOL(DC) 0.2XVDDQ
0.5XVDDQ
1,2,3,4
1,2,3,4
1,2,3,4
1,2,3,4
1,2,3,4
1,2,3,4
1,2,5
RTT40pd80
V
OH(DC) 0.8XVDDQ
VOL(DC) 0.2XVDDQ
0.5XVDDQ
RTT40pu80
V
OH(DC) 0.8XVDDQ
RTT40
VIL(AC) to VIH(AC)
VOL(DC) 0.2XVDDQ
0.5XVDDQ
1,2,3,4
1,2,3,4
1,2,3,4
1,2,3,4
1,2,3,4
1,2,3,4
1,2,5
RTT30pd60
V
OH(DC) 0.8XVDDQ
VOL(DC) 0.2XVDDQ
0.5XVDDQ
RTT30pu60
V
OH(DC) 0.8XVDDQ
RTT30
VIL(AC) to VIH(AC)
VOL(DC) 0.2XVDDQ
0.5XVDDQ
1,2,3,4
1,2,3,4
1,2,3,4
1,2,3,4
1,2,3,4
1,2,3,4
1,2,5
RTT20pd40
V
OH(DC) 0.8XVDDQ
VOL(DC) 0.2XVDDQ
0.5XVDDQ
RTT20pu40
V
OH(DC) 0.8XVDDQ
RTT20
VIL(AC) to VIH(AC)
Deviation of VM w.r.t VDDQ/2, ΔVM
%
1,2,5,6
- 26 -
Rev. 1.04
K4B2G0446D
K4B2G0846D
datasheet
DDR3L SDRAM
1.5V
Vout
MR1 (A9,A6,A2)
RTT
RESISTOR
Min
Nom
Max
Unit
RZQ
Notes
VOL(DC) 0.2XVDDQ
0.5XVDDQ
0.6
0.9
0.9
0.9
0.9
0.6
0.9
0.6
0.9
0.9
0.9
0.9
0.6
0.9
0.6
0.9
0.9
0.9
0.9
0.6
0.9
0.6
0.9
0.9
0.9
0.9
0.6
0.9
0.6
0.9
0.9
0.9
0.9
0.6
0.9
-5
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.1
1.1
1.4
1.4
1.1
1.1
1.6
1.1
1.1
1.4
1.4
1.1
1.1
1.6
1.1
1.1
1.4
1.4
1.1
1.1
1.6
1.1
1.1
1.4
1.4
1.1
1.1
1.6
1.1
1.1
1.4
1.4
1.1
1.1
1.6
5
1,2,3,4
1,2,3,4
1,2,3,4
1,2,3,4
1,2,3,4
1,2,3,4
1,2,5
RTT120pd240
RZQ
V
OH(DC) 0.8XVDDQ
RZQ
VOL(DC) 0.2XVDDQ
0.5XVDDQ
RZQ
(0,1,0)
120 ohm
RTT120pu240
RZQ
V
OH(DC) 0.8XVDDQ
RZQ
RTT120
VIL(AC) to VIH(AC)
VOL(DC) 0.2XVDDQ
0.5XVDDQ
RZQ/2
RZQ/2
RZQ/2
RZQ/2
RZQ/2
RZQ/2
RZQ/2
RZQ/4
RZQ/3
RZQ/3
RZQ/3
RZQ/3
RZQ/3
RZQ/3
RZQ/6
RZQ/4
RZQ/4
RZQ/4
RZQ/4
RZQ/4
RZQ/4
RZQ/8
RZQ/6
RZQ/6
RZQ/6
RZQ/6
RZQ/6
RZQ/6
RZQ/12
1,2,3,4
1,2,3,4
1,2,3,4
1,2,3,4
1,2,3,4
1,2,3,4
1,2,5
RTT60pd240
V
OH(DC) 0.8XVDDQ
VOL(DC) 0.2XVDDQ
0.5XVDDQ
(0,0,1)
(0,1,1)
(1,0,1)
(1,0,0)
60 ohm
40 ohm
30 ohm
20 ohm
RTT60pu240
V
OH(DC) 0.8XVDDQ
RTT60
VIL(AC) to VIH(AC)
VOL(DC) 0.2XVDDQ
0.5XVDDQ
1,2,3,4
1,2,3,4
1,2,3,4
1,2,3,4
1,2,3,4
1,2,3,4
1,2,5
RTT40pd240
V
OH(DC) 0.8XVDDQ
VOL(DC) 0.2XVDDQ
0.5XVDDQ
RTT40pu240
V
OH(DC) 0.8XVDDQ
RTT40
VIL(AC) to VIH(AC)
VOL(DC) 0.2XVDDQ
0.5XVDDQ
1,2,3,4
1,2,3,4
1,2,3,4
1,2,3,4
1,2,3,4
1,2,3,4
1,2,5
RTT60pd240
V
OH(DC) 0.8XVDDQ
VOL(DC) 0.2XVDDQ
0.5XVDDQ
RTT60pu240
V
OH(DC) 0.8XVDDQ
RTT60
VIL(AC) to VIH(AC)
VOL(DC) 0.2XVDDQ
0.5XVDDQ
1,2,3,4
1,2,3,4
1,2,3,4
1,2,3,4
1,2,3,4
1,2,3,4
1,2,5
RTT60pd240
V
OH(DC) 0.8XVDDQ
VOL(DC) 0.2XVDDQ
0.5XVDDQ
RTT60pu240
V
OH(DC) 0.8XVDDQ
RTT60
VIL(AC) to VIH(AC)
Deviation of VM w.r.t VDDQ/2, ΔVM
%
1,2,5,6
- 27 -
Rev. 1.04
K4B2G0446D
K4B2G0846D
datasheet
DDR3L SDRAM
NOTE :
1. The tolerance limits are specified after calibration with stable voltage and temperature. For the behavior of the tolerance limits if temperature or voltage changes after calibra-
tion, see following section on voltage and temperature sensitivity
2. The tolerance limits are specified under the condition that V
= V and that V
= V
SSQ SS
DDQ
DD
3. Pull-down and pull-up ODT resistors are recommended to be calibrated at 0.5XV
. Other calibration schemes may be used to achieve the linearity spec shown above, e.g.
DDQ
calibration at 0.2XV
and 0.8XV
.
DDQ
DDQ
4. Not a specification requirement, but a design guide line
5. Measurement definition for RTT:
Apply V (AC) to pin under test and measure current I(V (AC)), then apply V (AC) to pin under test and measure current I(V (AC)) respectively
IH
IH
IL
IL
VIH(AC) - VIL(AC)
RTT
=
I(VIH(AC)) - I(VIL(AC))
6. Measurement definition for V and ΔV : Measure voltage (V ) at test pin (midpoint) with no load
M
M
M
2 x VM
VDDQ
- 1
x 100
Δ VM
=
9.8.2 ODT Temperature and Voltage sensitivity
If temperature and/or voltage change after calibration, the tolerance limits widen according to table below
ΔT = T - T(@calibration); ΔV = VDDQ - VDDQ (@calibration); VDD = VDDQ
[ Table 28 ] ODT Sensitivity Definition
Min
Max
Units
0.9 - dRTTdT * |ΔT| - dR dV * |ΔV|
1.6 + dRTTdT * |ΔT| + dR dV * |ΔV|
RTT
RZQ/2,4,6,8,12
TT
TT
[ Table 29 ] ODT Voltage and Temperature Sensitivity
Min
0
Max
1.5
Units
%/°C
dRTTdT
dRTTdV
0
0.15
%/mV
NOTE : These parameters may not be subject to production test. They are verified by design and characterization.
- 28 -
Rev. 1.04
K4B2G0446D
K4B2G0846D
datasheet
DDR3L SDRAM
9.9 ODT Timing Definitions
9.9.1 Test Load for ODT Timings
Different than for timing measurements, the reference load for ODT timings is defined in Figure 13.
VDDQ
DUT
DQ, DM
CK,CK
VTT
VSSQ
=
DQS , DQS
TDQS , TDQS
RTT
=25 ohm
VSSQ
Timing Reference Points
Figure 13. ODT Timing Reference Load
9.9.2 ODT Timing Definitions
Definitions for tAON, tAONPD, tAOF, tAOFPD and tADC are provided in Table 30 and subsequent figures. Measurement reference settings are provided
in Table 31 .
[ Table 30 ] ODT Timing Definitions
Symbol
tAON
Begin Point Definition
End Point Definition
Extrapolated point at VSSQ
Figure
Rising edge of CK - CK defined by the end point of ODTLon
Rising edge of CK - CK with ODT being first registered high
Rising edge of CK - CK defined by the end point of ODTLoff
Rising edge of CK - CK with ODT being first registered low
Figure 14
Figure 15
Figure 16
Figure 17
tAONPD
tAOF
Extrapolated point at VSSQ
End point: Extrapolated point at VRTT_Nom
End point: Extrapolated point at VRTT_Nom
tAOFPD
Rising edge of CK - CK defined by the end point of ODTLcnw,
ODTLcwn4 of ODTLcwn8
End point: Extrapolated point at VRTT_Wr and VRTT_Nom
respectively
tADC
Figure 18
[ Table 31 ] Reference Settings for ODT Timing Measurements
Measured
RTT_Nom Setting
RTT_Wr Setting
VSW1[V]
VSW2[V]
NOTE
Parameter
RZQ/4
RZQ/12
RZQ/4
NA
NA
0.05
0.10
0.05
0.10
0.05
0.10
0.05
0.10
0.20
0.10
0.20
0.10
0.20
0.10
0.20
0.10
0.20
0.25
tAON
NA
tAONPD
tAOF
RZQ/12
RZQ/4
NA
NA
RZQ/12
RZQ/4
NA
NA
tAOFPD
tADC
RZQ/12
RZQ/12
NA
RZQ/2
- 29 -
Rev. 1.04
K4B2G0446D
K4B2G0846D
datasheet
DDR3L SDRAM
Begin point : Rising edge of CK - CK
defined by the end point of ODTLon
CK
CK
V
TT
t
AON
T
SW2
T
SW1
DQ, DM
DQS , DQS
TDQS , TDQS
V
SW2
V
SW1
VSSQ
VSSQ
End point Extrapolated point at VSSQ
Figure 14. Definition of tAON
Begin point : Rising edge of CK - CK
with ODT being first registered high
CK
CK
V
TT
t
AONPD
T
SW2
T
SW1
DQ, DM
DQS , DQS
TDQS , TDQS
V
SW2
V
SW1
VSSQ
VSSQ
End point Extrapolated point at VSSQ
Figure 15. Definition of tAONPD
Begin point : Rising edge of CK - CK
defined by the end point of ODTLoff
CK
CK
V
TT
t
AOF
End point Extrapolated point at VRTT_Nom
VRTT_Nom
T
SW2
T
DQ, DM
DQS , DQS
SW1
V
SW2
V
TDQS , TDQS
SW1
VSSQ
TD_TAON_DEF
Figure 16. Definition of tAOF
- 30 -
Rev. 1.04
K4B2G0446D
K4B2G0846D
datasheet
DDR3L SDRAM
Begin point : Rising edge of CK - CK
with ODT being first registered low
CK
CK
V
TT
t
AOFPD
End point Extrapolated point at VRTT_Nom
VRTT_Nom
T
SW2
T
DQ, DM
DQS , DQS
SW1
V
SW2
V
TDQS , TDQS
SW1
VSSQ
Figure 17. Definition of tAOFPD
Begin point : Rising edge of CK - CK
defined by the end point of ODTLcnw
Begin point : Rising edge of CK - CK defined by
the end point of ODTLcwn4 or ODTLcwn8
CK
CK
V
TT
t
t
ADC
ADC
End point Extrapolated point at VRTT_Nom
VRTT_Nom
End point
VRTT_Nom
T
SW21
T
T
DQ, DM
SW22
Extrapolated point
at VRTT_Nom
V
SW2
DQS , DQS
TDQS , TDQS
SW11
T
SW12
V
SW1
End point Extrapolated point at VRTT_Wr
VRTT_Wr
V
SSQ
Figure 18. Definition of tADC
- 31 -
Rev. 1.04
K4B2G0446D
K4B2G0846D
datasheet
DDR3L SDRAM
10. IDD Current Measure Method
10.1 IDD Measurement Conditions
In this chapter, IDD and IDDQ measurement conditions such as test load and patterns are defined. Figure 19 shows the setup and test load for IDD and
IDDQ measurements.
- IDD currents (such as IDD0, IDD1, IDD2N, IDD2NT, IDD2P0, IDD2P1, IDD2Q, IDD3N, IDD3P, IDD4R, IDD4W, IDD5B, IDD6, IDD6ET, IDD6TC and
IDD7) are measured as time-averaged currents with all VDD balls of the DDR3 SDRAM under test tied together. Any IDDQ current is not included in
IDD currents.
- IDDQ currents (such as IDDQ2NT and IDDQ4R) are measured as time-averaged currents with all VDDQ balls of the DDR3 SDRAM under test tied
together. Any IDD current is not included in IDDQ currents.
Attention : IDDQ values cannot be directly used to calculate IO power of the DDR3 SDRAM. They can be used to support correlation of simulated IO
power to actual IO power as outlined in Figure 20. In DRAM module application, IDDQ cannot be measured separately since VDD and VDDQ
are using one merged-power layer in Module PCB.
For IDD and IDDQ measurements, the following definitions apply :
- "0" and "LOW" is defined as VIN <= VILAC(max).
- "1" and "HIGH" is defined as VIN >= VIHAC(min).
- "FLOATING" is defined as inputs are VREF = VDD / 2.
- "Timing used for IDD and IDDQ Measured - Loop Patterns" are provided in Table 32
- "Basic IDD and IDDQ Measurement Conditions" are described in Table 33
- Detailed IDD and IDDQ Measurement-Loop Patterns are described in Table 32 on page 31 through Table 39.
- IDD Measurements are done after properly initializing the DDR3 SDRAM. This includes but is not limited to setting
RON = RZQ/7 (34 Ohm in MR1);
Qoff = 0B (Output Buffer enabled in MR1);
RTT_Nom = RZQ/6 (40 Ohm in MR1);
RTT_Wr = RZQ/2 (120 Ohm in MR2);
TDQS Feature disabled in MR1
- Attention : The IDD and IDDQ Measurement-Loop Patterns need to be executed at least one time before actual IDD or IDDQ measurement is started.
- Define D = {CS, RAS, CAS, WE} := {HIGH, LOW, LOW, LOW}
- Define D = {CS, RAS, CAS, WE} := {HIGH, HIGH, HIGH, HIGH}
- RESET Stable time is : During a Cold Bood RESET (Initialization), current reading is valid once power is stable and RESET has been LOW for 1ms;
During Warm Boot RESET(while operating), current reading is valid after RESET has been LOW for 200ns + tRFC
[ Table 32 ] Timing used for IDD and IDDQ Measured - Loop Patterns
DDR3-800
DDR3-1066
DDR3-1333
DDR3-1600
Parameter Bin
tCKmin(IDD)
Unit
6-6-6
2.5
6
7-7-7
1.875
7
9-9-9
1.5
9
11-11-11
1.25
11
ns
CL(IDD)
nCK
nCK
nCK
nCK
nCK
nCK
nCK
nCK
nCK
nCK
nCK
nCK
nCK
nCK
tRCDmin(IDD)
tRCmin(IDD)
tRASmin(IDD)
tRPmin(IDD)
6
7
9
11
21
15
6
27
20
7
33
24
9
39
28
11
x4/x8
x16
16
20
4
20
27
4
20
30
4
24
tFAW(IDD)
tRRD(IDD)
32
x4/x8
x16
5
4
6
5
6
tRFC(IDD) - 512Mb
tRFC(IDD) - 1Gb
tRFC(IDD) - 2Gb
tRFC(IDD) - 4Gb
tRFC(IDD) - 8Gb
36
44
64
104
140
48
59
86
139
187
60
74
107
174
234
72
88
128
208
280
- 32 -
Rev. 1.04
K4B2G0446D
K4B2G0846D
datasheet
DDR3L SDRAM
I
I
DDQ
DD
V
V
DDQ
DD
RESET
CK/CK
CKE
CS
DQS, DQS
DQ, DM,
R
= 25 Ohm
V
TT
/2
DDQ
RAS, CAS, WE
TDQS, TDQS
A, BA
ODT
ZQ
V
V
SSQ
SS
[NOTE : DIMM level Output test load condition may be different from above]
Figure 19. Measurement Setup and Test Load for IDD and IDDQ Measurements
Application specific
IDDQ
Test Load
memory channel
environment
Channel
IO Power
Simulation
IDDQ
Measurement
IDDQ
Simulation
Correlation
Correction
Channel IO Power
Number
Figure 20. Correlation from simulated Channel IO Power to actual Channel IO Power supported by IDDQ Measurement.
- 33 -
Rev. 1.04
K4B2G0446D
K4B2G0846D
datasheet
DDR3L SDRAM
[ Table 33 ] Basic IDD and IDDQ Measurement Conditions
Symbol
Description
Operating One Bank Active-Precharge Current
1)
CKE: High; External clock: On; tCK, nRC, nRAS, CL: see Table 32 on page 32 ; BL: 8 ; AL: 0; CS: High between ACT and PRE; Command, Address,
Bank Address Inputs: partially toggling according to Table 32 on page 31 ; Data IO: FLOATING; DM:stable at 0; Bank Activity: Cycling with one bank active
IDD0
IDD1
2)
at a time: 0,0,1,1,2,2,... (see Table 32); Output Buffer and RTT: Enabled in Mode Registers ; ODT Signal: stable at 0; Pattern Details: see Table 32
Operating One Bank Active-Read-Precharge Current
1)
CKE: High; External clock: On; tCK, nRC, nRAS, nRCD, CL: see Table 32 on page 32 ; BL: 8 ; AL: 0; CS: High between ACT, RD and PRE; Command,
Address, Bank Address Inputs, Data IO: partially toggling according to Table 33 on page 32 ; DM:stable at 0; Bank Activity: Cycling with one bank active at
2)
a time: 0,0,1,1,2,2,... (see Table 33); Output Buffer and RTT: Enabled in Mode Registers ; ODT Signal: stable at 0; Pattern Details: see Table 33
Precharge Standby Current
1)
CKE: High; External clock: On; tCK, CL: see Table 32 on page 32 ; BL: 8 ; AL: 0; CS: stable at 1; Command, Address, Bank Address Inputs: partially tog-
gling according to Table 34 on page 32 ; Data IO: FLOATING; DM:stable at 0; Bank Activity: all banks closed; Output Buffer and RTT: Enabled in Mode
IDD2N
2)
Registers ; ODT Signal: stable at 0; Pattern Details: see Table 34
Precharge Standby ODT Current
1)
CKE: High; External clock: On; tCK, CL: see Table 32 on page 32 ; BL: 8 ; AL: 0; CS: stable at 1; Command, Address, Bank Address Inputs: partially tog-
gling according to Table 35 on page 33 ; Data IO: FLOATING;DM:stable at 0; Bank Activity: all banks closed; Output Buffer and RTT: Enabled in Mode
IDD2NT
IDDQ2NT
IDD2P0
2)
Registers ; ODT Signal: toggling according to Table 35 ; Pattern Details: see Table 35
Precharge Standby ODT IDDQ Current
Same definition like for IDD2NT, however measuring IDDQ current instead of IDD current
Precharge Power-Down Current Slow Exit
1)
CKE: Low; External clock: On; tCK, CL: see Table 32 on page 32 ; BL: 8 ; AL: 0; CS: stable at 1; Command, Address, Bank Address Inputs: stable at 0;
2)
Data IO: FLOATING; DM:stable at 0; Bank Activity: all banks closed; Output Buffer and RTT: Enabled in Mode Registers ; ODT Signal: stable at 0; Pre-
3)
charge Power Down Mode: Slow Exi
Precharge Power-Down Current Fast Exit
1)
CKE: Low; External clock: On; tCK, CL: see Table 32 on page 32; BL: 8 ; AL: 0; CS: stable at 1; Command, Address, Bank Address Inputs: stable at 0;
IDD2P1
IDD2Q
IDD3N
IDD3P
2)
Data IO: FLOATING; DM:stable at 0; Bank Activity: all banks closed; Output Buffer and RTT: Enabled in Mode Registers ; ODT Signal: stable at 0; Pre-
3)
charge Power Down Mode: Fast Exit
Precharge Quiet Standby Current
1)
CKE: High; External clock: On; tCK, CL: see Table 32 on page 32 ; BL: 8 ; AL: 0; CS: stable at 1; Command, Address, Bank Address Inputs: stable at 0;
2)
Data IO: FLOATING; DM:stable at 0;Bank Activity: all banks closed; Output Buffer and RTT: Enabled in Mode Registers ; ODT Signal: stable at 0
Active Standby Current
1)
CKE: High; External clock: On; tCK, CL: see Table 32 on page 32 ; BL: 8 ; AL: 0; CS: stable at 1; Command, Address, Bank Address Inputs: partially tog-
gling according to Table 34 on page 32 ; Data IO: FLOATING; DM:stable at 0;Bank Activity: all banks open; Output Buffer and RTT: Enabled in Mode
2)
Registers ; ODT Signal: stable at 0; Pattern Details: see Table 34
Active Power-Down Current
1)
CKE: Low; External clock: On; tCK, CL: see Table 32 on page 32 ; BL: 8 ; AL: 0; CS: stable at 1; Command, Address, Bank Address Inputs: stable at 0;
2)
Data IO: FLOATING;DM:stable at 0; Bank Activity: all banks open; Output Buffer and RTT: Enabled in Mode Registers ; ODT Signal: stable at 0
Operating Burst Read Current
1)
CKE: High; External clock: On; tCK, CL: see Table 32 on page 32 ; BL: 8 ; AL: 0; CS: High between RD; Command, Address, Bank Address Inputs: par-
IDD4R
IDDQ4R
IDD4W
tially toggling according to Table 36 on page 33 ; Data IO: seamless read data burst with different data between one burst and the next one according to
Table 36 ; DM:stable at 0; Bank Activity: all banks open, RD commands cycling through banks: 0,0,1,1,2,2,... (see Table 7 on page 12); Output Buffer and
2)
RTT: Enabled in Mode Registers ; ODT Signal: stable at 0; Pattern Details: see Table 36
Operating Burst Read IDDQ Current
Same definition like for IDD4R, however measuring IDDQ current instead of IDD current
Operating Burst Write Current
1)
CKE: High; External clock: On; tCK, CL: see Table 32 on page 32 ; BL: 8 ; AL: 0; CS: High between WR; Command, Address, Bank Address Inputs: par-
tially toggling according to Table 37 on page 34 ; Data IO: seamless write data burst with different data between one burst and the next one according to
Table 37; DM: stable at 0; Bank Activity: all banks open, WR commands cycling through banks: 0,0,1,1,2,2,... (see Table 37); Output Buffer and RTT:
2)
Enabled in Mode Registers ; ODT Signal: stable at HIGH; Pattern Details: see Table 37
Burst Refresh Current
1)
CKE: High; External clock: On; tCK, CL, nRFC: see Table 32 on page 32 ; BL: 8 ; AL: 0; CS: High between REF; Command, Address, Bank Address
Inputs: partially toggling according to Table 38 on page 34 ; Data IO: FLOATING;DM:stable at 0; Bank Activity: REF command every nRFC (see Table 38);
IDD5B
IDD6
2)
Output Buffer and RTT: Enabled in Mode Registers ; ODT Signal: stable at 0; Pattern Details: see Table 38
Self Refresh Current: Normal Temperature Range
4)
5)
TCASE: 0 - 85°C; Auto Self-Refresh (ASR): Disabled ; Self-Refresh Temperature Range (SRT): Normal ; CKE: Low; External clock: Off; CK and CK:
1)
LOW; CL: see Table 32 on page 32 ; BL: 8 ; AL: 0; CS, Command, Address, Bank Address, Data IO: FLOATING;DM:stable at 0; Bank Activity: Self-
2)
Refresh operation; Output Buffer and RTT: Enabled in Mode Registers ; ODT Signal: FLOATING
- 34 -
Rev. 1.04
K4B2G0446D
K4B2G0846D
datasheet
DDR3L SDRAM
[ Table 33 ] Basic IDD and IDDQ Measurement Conditions
Symbol
Description
Operating Bank Interleave Read Current
1)
CKE: High; External clock: On; tCK, nRC, nRAS, nRCD, nRRD, nFAW, CL: see Table 32 on page 32 ; BL: 8 ; AL: CL-1; CS: High between ACT and RDA;
Command, Address, Bank Address Inputs: partially toggling according to Table 39 on page 35 ; Data IO: read data bursts with different data between one
burst and the next one according to Table 39 ; DM:stable at 0; Bank Activity: two times interleaved cycling through banks (0, 1, ...7) with different addressing,
IDD7
IDD8
2)
see Table 39 ; Output Buffer and RTT: Enabled in Mode Registers ; ODT Signal: stable at 0; Pattern Details: see Table 39
RESET Low Current
RESET : Low; External clock : off; CK and CK : LOW; CKE : FLOATING ; CS, Command, Address, Bank Address, Data IO : FLOATING ; ODT Signal :
FLOATING
NOTE :
1) Burst Length: BL8 fixed by MRS: set MR0 A[1,0]=00B
2) Output Buffer Enable: set MR1 A[12] = 0B; set MR1 A[5,1] = 01B; RTT_Nom enable: set MR1 A[9,6,2] = 011B; RTT_Wr enable: set MR2 A[10,9] = 10B
3) Precharge Power Down Mode: set MR0 A12=0B for Slow Exit or MR0 A12=1B for Fast Exit
4) Auto Self-Refresh (ASR): set MR2 A6 = 0B to disable or 1B to enable feature
5) Self-Refresh Temperature Range (SRT): set MR2 A7=0B for normal or 1B for extended temperature range
6) Read Burst type : Nibble Sequential, set MR0 A[3]=0B
- 35 -
Rev. 1.04
K4B2G0446D
K4B2G0846D
datasheet
DDR3L SDRAM
[ Table 34 ] IDD0 Measurement - Loop Pattern1)
0
0
1,2
ACT
D, D
D, D
0
1
1
0
0
1
1
0
1
1
0
1
0
0
0
0
0
0
00
00
00
0
0
0
0
0
0
0
0
0
0
0
0
-
-
-
3,4
...
repeat pattern 1...4 until nRAS - 1, truncate if necessary
PRE
repeat pattern 1...4 until nRC - 1, truncate if necessary
nRAS
0
0
1
0
0
0
00
0
0
0
0
-
...
1*nRC + 0
1*nRC + 1, 2
1*nRC + 3, 4
...
ACT
D, D
D, D
0
1
1
0
0
1
1
0
1
1
0
1
0
0
0
0
0
0
00
00
00
0
0
0
0
0
0
F
F
F
0
0
0
-
-
-
repeat pattern 1...4 until 1*nRC + nRAS - 1, truncate if necessary
PRE 00
1*nRC + nRAS
...
0
0
1
0
0
0
0
0
F
0
repeat 1...4 until 2*nRC - 1, truncate if necessary
repeat Sub-Loop 0, use BA[2:0] = 1 instead
repeat Sub-Loop 0, use BA[2:0] = 2 instead
repeat Sub-Loop 0, use BA[2:0] = 3 instead
repeat Sub-Loop 0, use BA[2:0] = 4 instead
repeat Sub-Loop 0, use BA[2:0] = 5 instead
repeat Sub-Loop 0, use BA[2:0] = 6 instead
repeat Sub-Loop 0, use BA[2:0] = 7 instead
1
2
3
4
5
6
7
2*nRC
4*nRC
6*nRC
8*nRC
10*nRC
12*nRC
14*nRC
NOTE :
1. DM must be driven LOW all the time. DQS, DQS are MID-LEVEL.
2. DQ signals are MID-LEVEL.
- 36 -
Rev. 1.04
K4B2G0446D
K4B2G0846D
datasheet
DDR3L SDRAM
[ Table 35 ] IDD1 Measurement - Loop Pattern1)
0
0
1,2
ACT
D, D
D, D
0
1
1
0
0
1
1
0
1
1
0
1
0
0
0
0
0
0
00
00
00
0
0
0
0
0
0
0
0
0
0
0
0
-
-
-
3,4
...
repeat pattern 1...4 until nRCD- 1, truncate if necessary
RD
repeat pattern 1...4 until nRAS - 1, truncate if necessary
PRE
repeat pattern 1...4 until nRC - 1, truncate if necessary
nRCD
...
0
1
0
1
0
0
00
00
0
0
0
0
0
0
0
0
00000000
-
nRAS
0
0
1
0
0
0
...
1*nRC+0
1*nRC + 1, 2
1*nRC + 3, 4
...
ACT
D, D
D, D
0
1
1
0
0
1
1
0
1
1
0
1
0
0
0
0
0
0
00
00
00
0
0
0
0
0
0
F
F
F
0
0
0
-
-
-
repeat pattern nRC + 1,..., 4 until nRC + nRCD - 1, truncate if necessary
1*nRC + nRCD
...
RD
repeat pattern nRC + 1,..., 4 until nRC +nRAS - 1, truncate if necessary
PRE 00
0
1
0
1
0
0
00
0
0
F
F
0
0
00110011
-
1*nRC + nRAS
...
0
0
1
0
0
0
0
0
repeat pattern nRC + 1,..., 4 until 2 * nRC - 1, truncate if necessary
repeat Sub-Loop 0, use BA[2:0] = 1 instead
repeat Sub-Loop 0, use BA[2:0] = 2 instead
repeat Sub-Loop 0, use BA[2:0] = 3 instead
repeat Sub-Loop 0, use BA[2:0] = 4 instead
repeat Sub-Loop 0, use BA[2:0] = 5 instead
repeat Sub-Loop 0, use BA[2:0] = 6 instead
repeat Sub-Loop 0, use BA[2:0] = 7 instead
1
2
3
4
5
6
7
2*nRC
4*nRC
6*nRC
8*nRC
10*nRC
12*nRC
14*nRC
NOTE :
1. DM must be driven LOW all the time. DQS, DQS are used according to RD Commands, otherwise MID-LEVEL.
2. Burst Sequence driven on each DQ signal by Read Command. Outside burst operation, DQ signals are MID-LEVEL.
[ Table 36 ] IDD2 and IDD3N Measurement - Loop Pattern1)
0
0
D
D
D
D
1
1
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
0
0
0
0
0
0
00
00
00
00
0
0
0
0
0
0
0
0
0
0
F
F
0
0
0
0
-
-
-
-
1
2
3
1
2
3
4
5
6
7
4-7
repeat Sub-Loop 0, use BA[2:0] = 1 instead
repeat Sub-Loop 0, use BA[2:0] = 2 instead
repeat Sub-Loop 0, use BA[2:0] = 3 instead
repeat Sub-Loop 0, use BA[2:0] = 4 instead
repeat Sub-Loop 0, use BA[2:0] = 5 instead
repeat Sub-Loop 0, use BA[2:0] = 6 instead
repeat Sub-Loop 0, use BA[2:0] = 7 instead
8-11
12-15
16-19
20-23
24-27
28-31
NOTE :
1. DM must be driven Low all the time. DQS, DQS are MID-LEVEL.
2. DQ signals are MID-LEVEL.
- 37 -
Rev. 1.04
K4B2G0446D
K4B2G0846D
datasheet
DDR3L SDRAM
[ Table 37 ] IDD2NT and IDDQ2NT Measurement - Loop Pattern1)
0
0
D
D
D
D
1
1
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
0
0
0
0
0
0
00
00
00
00
0
0
0
0
0
0
0
0
0
0
F
F
0
0
0
0
-
1
2
3
1
2
3
4
5
6
7
4-7
repeat Sub-Loop 0, but ODT = 0 and BA[2:0] = 1
repeat Sub-Loop 0, but ODT = 1 and BA[2:0] = 2
repeat Sub-Loop 0, but ODT = 1 and BA[2:0] = 3
repeat Sub-Loop 0, but ODT = 0 and BA[2:0] = 4
repeat Sub-Loop 0, but ODT = 0 and BA[2:0] = 5
repeat Sub-Loop 0, but ODT = 1 and BA[2:0] = 6
repeat Sub-Loop 0, but ODT = 1 and BA[2:0] = 7
8-11
12-15
16-19
20-23
24-27
28-31
NOTE :
1. DM must be driven Low all the time. DQS, DQS are MID-LEVEL.
2. DQ signals are MID-LEVEL.
[ Table 38 ] IDD4R and IDDQ4R Measurement - Loop Pattern1)
0
0
RD
D
0
1
1
0
1
1
1
0
1
1
0
1
0
0
1
0
0
1
1
0
1
1
0
1
0
0
0
0
0
0
0
0
0
0
0
0
00
00
00
00
00
00
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
F
F
F
0
0
0
0
0
0
00000000
1
-
2,3
D,D
RD
D
-
4
00110011
5
-
-
6,7
D,D
1
2
3
4
5
6
7
8-15
16-23
24-31
32-39
40-47
48-55
56-63
repeat Sub-Loop 0, but BA[2:0] = 1
repeat Sub-Loop 0, but BA[2:0] = 2
repeat Sub-Loop 0, but BA[2:0] = 3
repeat Sub-Loop 0, but BA[2:0] = 4
repeat Sub-Loop 0, but BA[2:0] = 5
repeat Sub-Loop 0, but BA[2:0] = 6
repeat Sub-Loop 0, but BA[2:0] = 7
NOTE :
1. DM must be driven LOW all the time. DQS, DQS are used according to WR Commands, otherwise MID-LEVEL.
2. Burst Sequence driven on each DQ signal by Write Command. Outside burst operation, DQ signals are MID-LEVEL.
- 38 -
Rev. 1.04
K4B2G0446D
K4B2G0846D
datasheet
DDR3L SDRAM
[ Table 39 ] IDD4W Measurement - Loop Pattern1)
0
0
WR
D
0
1
1
0
1
1
1
0
1
1
0
1
0
0
1
0
0
1
0
0
1
0
0
1
1
1
1
1
1
1
0
0
0
0
0
0
00
00
00
00
00
00
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
F
F
F
0
0
0
0
0
0
00000000
1
-
2,3
D,D
WR
D
-
4
00110011
5
-
-
6,7
D,D
1
2
3
4
5
6
7
8-15
16-23
24-31
32-39
40-47
48-55
56-63
repeat Sub-Loop 0, but BA[2:0] = 1
repeat Sub-Loop 0, but BA[2:0] = 2
repeat Sub-Loop 0, but BA[2:0] = 3
repeat Sub-Loop 0, but BA[2:0] = 4
repeat Sub-Loop 0, but BA[2:0] = 5
repeat Sub-Loop 0, but BA[2:0] = 6
repeat Sub-Loop 0, but BA[2:0] = 7
NOTE :
1. DM must be driven LOW all the time. DQS, DQS are used according to WR Commands, otherwise MID-LEVEL.
2. Burst Sequence driven on each DQ signal by Write Command. Outside burst operation, DQ signals are MID-LEVEL.
[ Table 40 ] IDD5B Measurement - Loop Pattern1)
0
1
0
1,2
REF
D
0
1
1
0
0
1
0
0
1
1
0
1
0
0
0
0
0
0
00
00
00
0
0
0
0
0
0
0
0
F
0
0
0
-
-
-
3,4
D,D
5...8
repeat cycles 1...4, but BA[2:0] = 1
repeat cycles 1...4, but BA[2:0] = 2
repeat cycles 1...4, but BA[2:0] = 3
repeat cycles 1...4, but BA[2:0] = 4
repeat cycles 1...4, but BA[2:0] = 5
repeat cycles 1...4, but BA[2:0] = 6
repeat cycles 1...4, but BA[2:0] = 7
9...12
13...16
17...20
21...24
25...28
29...32
33...nRFC - 1
2
repeat Sub-Loop 1, until nRFC - 1. Truncate, if necessary.
NOTE :
1. DM must be driven LOW all the time. DQS, DQS are MID-LEVEL.
2. DQ signals are MID-LEVEL.
- 39 -
Rev. 1.04
K4B2G0446D
K4B2G0846D
datasheet
DDR3L SDRAM
[ Table 41 ] IDD7 Measurement - Loop Pattern1)
0
1
ACT
RDA
D
0
0
1
0
1
0
1
0
0
1
1
0
0
0
0
0
0
0
00
00
00
0
1
0
0
0
0
0
0
0
0
0
0
-
00000000
-
0
1
2
...
repeat above D Command until nRRD - 1
nRRD
nRRD + 1
nRRD + 2
...
ACT
RDA
D
0
0
1
0
1
0
1
0
0
1
1
0
0
0
0
1
1
1
00
00
00
0
1
0
0
0
0
F
F
F
0
0
0
-
00110011
-
repeat above D Command until 2*nRRD-1
repeat Sub-Loop 0, but BA[2:0] = 2
repeat Sub-Loop 1, but BA[2:0] = 3
2
3
2 * nRRD
3 * nRRD
D
1
0
0
0
0
3
00
0
0
F
0
-
4
4 * nRRD
Assert and repeat above D Command until nFAW - 1, if necessary
repeat Sub-Loop 0, but BA[2:0] = 4
5
6
7
8
nFAW
nFAW+nRRD
nFAW+2*nRRD
nFAW+3*nRRD
repeat Sub-Loop 1, but BA[2:0] = 5
repeat Sub-Loop 0, but BA[2:0] = 6
repeat Sub-Loop 1, but BA[2:0] = 7
D
1
0
0
0
0
7
00
0
0
F
0
-
9
nFAW+4*nRRD
Assert and repeat above D Command until 2*nFAW - 1, if necessary
2*nFAW+0
2*nFAW+1
ACT
RDA
D
0
0
1
0
1
0
1
0
0
1
1
0
0
0
0
0
0
0
00
00
00
0
1
0
0
0
0
F
F
F
0
0
0
-
00110011
-
10
2*nFAW+2
Repeat above D Command until 2*nFAW + nRRD - 1
2*nFAW+nRRD
ACT
RDA
D
0
0
1
0
1
0
1
0
0
1
1
0
0
0
0
1
1
1
00
00
00
0
1
0
0
0
0
0
0
0
0
0
0
-
2*nFAW+nRRD+1
00000000
-
11
2*nFAW+nRRD+2
Repeat above D Command until 2*nFAW + 2*nRRD - 1
repeat Sub-Loop 10, but BA[2:0] = 2
12
13
2*nFAW+2*nRRD
2*nFAW+3*nRRD
repeat Sub-Loop 11, but BA[2:0] = 3
D
1
0
0
0
0
3
00
0
0
0
0
-
14
2*nFAW+4*nRRD
Assert and repeat above D Command until 3*nFAW - 1, if necessary
repeat Sub-Loop 10, but BA[2:0] = 4
15
16
17
18
3*nFAW
3*nFAW+nRRD
3*nFAW+2*nRRD
3*nFAW+3*nRRD
repeat Sub-Loop 11, but BA[2:0] = 5
repeat Sub-Loop 10, but BA[2:0] = 6
repeat Sub-Loop 11, but BA[2:0] = 7
D
1
0
0
0
0
7
00
0
0
0
0
-
19
3*nFAW+4*nRRD
Assert and repeat above D Command until 4*nFAW - 1, if necessary
NOTE :
1. DM must be driven LOW all the time. DQS, DQS are used according to RD Commands, otherwise MID-LEVEL.
2. Burst Sequence driven on each DQ signal by Read Command. Outside burst operation. DQ signals are MID-LEVEL.
- 40 -
Rev. 1.04
K4B2G0446D
K4B2G0846D
datasheet
DDR3L SDRAM
11. 2Gb DDR3 SDRAM D-die IDD Specification Table
[ Table 42 ] IDD Specification for 2Gb DDR3 D-die
512Mx4 (K4B2G0446D)
Symbol
DDR3-1066 (7-7-7)
1.35V
DDR3-1333 (9-9-9)
1.35V
DDR3-1600 (11-11-11)
Unit
NOTE
1.5V
35
45
12
15
17
20
40
17
17
30
50
35
60
110
12
105
12
1.5V
40
50
12
15
20
25
40
20
17
35
60
35
70
115
12
125
12
1.35V
40
1.5V
45
IDD0
IDD1
30
40
10
13
15
17
35
15
15
25
55
30
60
110
10
100
10
35
45
10
13
15
20
35
15
15
25
70
30
75
115
10
125
10
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
50
55
IDD2P0(slow exit)
IDD2P1(fast exit)
IDD2N
10
12
15
15
17
20
IDD2NT
IDDQ2NT
IDD2Q
22
25
35
40
17
20
IDD3P
17
20
IDD3N
30
35
IDD4R
80
70
IDDQ4R
IDD4W
30
35
90
85
IDD5B
115
10
120
12
IDD6
IDD7
130
10
130
12
IDD8
NOTE : V condition : 1.45V for 1.35V operation, 1.575V for 1.5V operation
DD
256Mx8 (K4B2G0846D)
DDR3-1333 (9-9-9)
Symbol
DDR3-1066 (7-7-7)
DDR3-1600 (11-11-11)
Unit
NOTE
1.35V
1.5V
35
1.35V
35
1.5V
40
50
12
15
20
25
70
20
17
35
75
50
80
115
12
135
12
1.35V
40
1.5V
45
IDD0
IDD1
30
40
10
13
15
17
65
15
15
25
50
45
55
110
10
95
10
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
45
45
50
55
IDD2P0(slow exit)
IDD2P1(fast exit)
IDD2N
12
15
17
20
10
10
12
13
15
15
15
17
20
IDD2NT
IDDQ2NT
IDD2Q
20
22
25
70
17
17
30
65
50
70
110
12
65
65
70
15
17
20
IDD3P
15
17
20
IDD3N
25
30
35
IDD4R
60
65
90
IDDQ4R
IDD4W
45
45
50
65
75
95
IDD5B
115
10
115
10
120
12
IDD6
IDD7
105
12
120
10
125
10
140
12
IDD8
NOTE : V condition : 1.45V for 1.35V operation, 1.575V for 1.5V operation
DD
- 41 -
Rev. 1.04
K4B2G0446D
K4B2G0846D
datasheet
DDR3L SDRAM
12. Input/Output Capacitance
[ Table 43 ] Input/Output Capacitance
DDR3-800
Min Max
1.35V
DDR3-1066
DDR3-1333
DDR3-1600
Parameter
Symbol
Units NOTE
Min
Max
Min
Max
Min
Max
Input/output capacitance
CIO
CCK
1.5
0.8
0
2.5
1.6
0.15
1.3
0.2
0.3
0.5
1.5
0.8
0
2.5
1.6
0.15
1.3
0.2
0.3
0.5
1.5
0.8
0
2.3
1.4
1.2
0.8
0
2.3
1.4
pF
pF
pF
pF
pF
pF
pF
1,2,3
2,3
(DQ, DM, DQS, DQS, TDQS, TDQS)
Input capacitance
(CK and CK)
Input capacitance delta
(CK and CK)
CDCK
0.15
1.3
0.15
1.3
2,3,4
Input capacitance
CI
0.75
0
0.75
0
0.75
0
0.75
0
2,3,6
(All other input-only pins)
Input/Output capacitance delta
(DQS and DQS)
CDDQS
CDI_CTRL
CDI_ADD_CMD
0.15
0.2
0.15
0.2
2,3,5
Input capacitance delta
-0.5
-0.5
-0.5
-0.5
-0.4
-0.4
-0.4
-0.4
2,3,7,8
2,3,9,10
(All control input-only pins)
Input capacitance delta
0.4
0.4
(all ADD and CMD input-only pins)
Input/output capacitance delta
CDIO
CZQ
-0.5
-
0.3
3
-0.5
-
0.3
3
-0.5
-
0.3
3
-0.5
-
0.3
3
pF
pF
2,3,11
(DQ, DM, DQS, DQS, TDQS, TDQS)
Input/output capacitance of ZQ pin
2, 3, 12
1.5V
Input/output capacitance
CIO
CCK
1.5
0.8
0
3.0
1.6
0.15
1.5
0.2
0.3
0.5
1.5
0.8
0
2.7
1.6
0.15
1.5
0.2
0.3
0.5
1.5
0.8
0
2.5
1.4
1.4
0.8
0
2.3
1.4
pF
pF
pF
pF
pF
pF
pF
1,2,3
2,3
(DQ, DM, DQS, DQS, TDQS, TDQS)
Input capacitance
(CK and CK)
Input capacitance delta
(CK and CK)
CDCK
0.15
1.3
0.15
1.3
2,3,4
Input capacitance
CI
0.75
0
0.75
0
0.75
0
0.75
0
2,3,6
(All other input-only pins)
Input capacitance delta
(DQS and DQS)
CDDQS
CDI_CTRL
CDI_ADD_CMD
0.15
0.2
0.15
0.2
2,3,5
Input capacitance delta
-0.5
-0.5
-0.5
-0.5
-0.4
-0.4
-0.4
-0.4
2,3,7,8
2,3,9,10
(All control input-only pins)
Input capacitance delta
0.4
0.4
(all ADD and CMD input-only pins)
Input/output capacitance delta
CDIO
CZQ
-0.5
-
0.3
3
-0.5
-
0.3
3
-0.5
-
0.3
3
-0.5
-
0.3
3
pF
pF
2,3,11
(DQ, DM, DQS, DQS, TDQS, TDQS)
Input/output capacitance of ZQ pin
2, 3, 12
NOTE :
1. Although the DM, TDQS and TDQS pins have different functions, the loading matches DQ and DQS
2. This parameter is not subject to production test. It is verified by design and characterization.
The capacitance is measured according to JEP147("PROCEDURE FOR MEASURING INPUT CAPACITANCE USING A VECTOR NETWORK ANALYZER( VNA)") with
, V , V , V applied and all other pins floating (except the pin under test, CKE, RESET and ODT as necessary). V =V =1.5V or 1.35V, V =V /2 and on-
V
DD
DDQ
SS
SSQ
DD
DDQ
BIAS
DD
die termination off.
3. This parameter applies to monolithic devices only; stacked/dual-die devices are not covered here
4. Absolute value of CCK-CCK
5. Absolute value of CIO(DQS)-CIO(DQS)
6. CI applies to ODT, CS, CKE, A0-A15, BA0-BA2, RAS, CAS, WE.
7. CDI_CTRL applies to ODT, CS and CKE
8. CDI_CTRL=CI(CTRL)-0.5*(CI(CLK)+CI(CLK))
9. CDI_ADD_CMD applies to A0-A15, BA0-BA2, RAS, CAS and WE
10. CDI_ADD_CMD=CI(ADD_CMD) - 0.5*(CI(CLK)+CI(CLK))
11. CDIO=CIO(DQ,DM) - 0.5*(CIO(DQS)+CIO(DQS))
12. Maximum external load capacitance on ZQ pin: 5pF
- 42 -
Rev. 1.04
K4B2G0446D
K4B2G0846D
datasheet
DDR3L SDRAM
13. Electrical Characteristics and AC timing for DDR3-800 to DDR3-1600
13.1 Clock Specification
The jitter specified is a random jitter meeting a Gaussian distribution. Input clocks violating the min/max values may result in malfunction of the DDR3
SDRAM device.
13.1.1 Definition for tCK(avg)
tCK(avg) is calculated as the average clock period across any consecutive 200 cycle window, where each clock period is calculated from rising edge to
rising edge.
N
tCKj
N=200
N
∑
j=1
13.1.2 Definition for tCK(abs)
tCK(abs) is defind as the absolute clock period, as measured from one rising edge to the next consecutive rising edge. tCK(abs) is not subject to produc-
tion test.
13.1.3 Definition for tCH(avg) and tCL(avg)
tCH(avg) is defined as the average high pulse width, as calculated across any consecutive 200 high pulses:
tCL(avg) is defined as the average low pulse width, as calculated across any consecutive 200 low pulses:
N
N
tCHj
tCLj
N x tCK(avg) N=200
∑
N x tCK(avg)
N=200
∑
j=1
j=1
13.1.4 Definition for note for tJIT(per), tJIT(per, Ick)
tJIT(per) is defined as the largest deviation of any single tCK from tCK(avg). tJIT(per) = min/max of {tCKi-tCK(avg) where i=1 to 200}
tJIT(per) defines the single period jitter when the DLL is already locked.
tJIT(per,lck) uses the same definition for single period jitter, during the DLL locking period only.
tJIT(per) and tJIT(per,lck) are not subject to production test.
13.1.5 Definition for tJIT(cc), tJIT(cc, Ick)
tJIT(cc) is defined as the absolute difference in clock period between two consecutive clock cycles: tJIT(cc) = Max of {tCKi+1-tCKi}
tJIT(cc) defines the cycle to cycle jitter when the DLL is already locked.
tJIT(cc,lck) uses the same definition for cycle to cycle jitter, during the DLL locking period only.
tJIT(cc) and tJIT(cc,lck) are not subject to production test.
13.1.6 Definition for tERR(nper)
tERR is defined as the cumulative error across n multiple consecutive cycles from tCK(avg). tERR is not subject to production test.
- 43 -
Rev. 1.04
K4B2G0446D
K4B2G0846D
datasheet
DDR3L SDRAM
13.2 Refresh Parameters by Device Density
[ Table 44 ] Refresh parameters by device density
Parameter
Symbol
1Gb
110
7.8
2Gb
160
7.8
4Gb
260
7.8
8Gb
350
7.8
Units
ns
NOTE
All Bank Refresh to active/refresh cmd time
tRFC
0 °C ≤ TCASE ≤ 85°C
μs
Average periodic refresh interval
tREFI
85 °C < TCASE ≤ 95°C
3.9
3.9
3.9
3.9
μs
1
NOTE :
1. Users should refer to the DRAM supplier data sheet and/or the DIMM SPD to determine if DDR3 SDRAM devices support the following options or requirements referred to in
this material.
13.3 Speed Bins and CL, tRCD, tRP, tRC and tRAS for corresponding Bin
DDR3 SDRAM Speed Bins include tCK, tRCD, tRP, tRAS and tRC for each corresponding bin.
[ Table 45 ] DDR3-800 Speed Bins
Speed
DDR3-800
6 - 6 - 6
CL-nRCD-nRP
Units
NOTE
Parameter
Symbol
tAA
min
15
max
Internal read command to first data
ACT to internal read or write delay time
PRE command period
20
ns
ns
tRCD
15
-
tRP
15
-
-
ns
ACT to ACT or REF command period
ACT to PRE command period
tRC
52.5
37.5
3.0
2.5
ns
tRAS
9*tREFI
3.3
ns
CL = 5
CWL = 5
CWL = 5
tCK(AVG)
tCK(AVG)
ns
1,2,3,4,9,10
1,2,3
CL = 6
3.3
ns
Supported CL Settings
Supported CWL Settings
5,6
5
nCK
nCK
[ Table 46 ] DDR3-1066 Speed Bins
Speed
DDR3-1066
7 - 7 - 7
CL-nRCD-nRP
Units
NOTE
Parameter
Internal read command to first data
ACT to internal read or write delay time
PRE command period
Symbol
tAA
min
13.125
13.125
13.125
50.625
37.5
max
20
ns
ns
tRCD
-
tRP
-
-
ns
ACT to ACT or REF command period
ACT to PRE command period
tRC
ns
tRAS
9*tREFI
3.3
ns
CWL = 5
CWL = 6
CWL = 5
CWL = 6
CWL = 5
CWL = 6
CWL = 5
CWL = 6
tCK(AVG)
tCK(AVG)
tCK(AVG)
tCK(AVG)
tCK(AVG)
tCK(AVG)
tCK(AVG)
tCK(AVG)
3.0
ns
1,2,3,4,5,9,10
CL = 5
CL = 6
CL = 7
CL = 8
Reserved
ns
4
1,2,3,5
1,2,3,4
4
2.5
3.3
ns
Reserved
Reserved
ns
ns
1.875
1.875
<2.5
<2.5
ns
1,2,3,4,8
4
Reserved
ns
ns
1,2,3
Supported CL Settings
Supported CWL Settings
5,6,7,8
5,6
nCK
nCK
- 44 -
Rev. 1.04
K4B2G0446D
K4B2G0846D
datasheet
DDR3L SDRAM
[ Table 47 ] DDR3-1333 Speed Bins
Speed
DDR3-1333
CL-nRCD-nRP
9 -9 - 9
Units
NOTE
Parameter
Symbol
min
max
13.5
Internal read command to first data
tAA
20
ns
ns
ns
ns
(13.125)8
13.5
ACT to internal read or write delay time
PRE command period
tRCD
tRP
-
-
-
(13.125)8
13.5
(13.125)8
49.5
ACT to ACT or REF command period
ACT to PRE command period
tRC
(49.125)8
tRAS
36
9*tREFI
3.3
ns
ns
CWL = 5
tCK(AVG)
tCK(AVG)
tCK(AVG)
tCK(AVG)
tCK(AVG)
tCK(AVG)
tCK(AVG)
tCK(AVG)
tCK(AVG)
tCK(AVG)
tCK(AVG)
tCK(AVG)
tCK(AVG)
tCK(AVG)
tCK(AVG)
3.0
1,2,3,4,6,9,10
CL = 5
CWL = 6,7
CWL = 5
CWL = 6
CWL = 7
CWL = 5
CWL = 6
CWL = 7
CWL = 5
CWL = 6
CWL = 7
CWL = 5,6
CWL = 7
CWL = 5,6
CWL = 7
Reserved
ns
4
1,2,3,6
1,2,3,4,6
4
2.5
3.3
ns
CL = 6
Reserved
Reserved
Reserved
ns
ns
ns
4
CL = 7
CL = 8
1.875
1.875
1.5
<2.5
<2.5
ns
1,2,3,4,6
1,2,3,4
4
Reserved
Reserved
ns
ns
ns
1,2,3,6
1,2,3,4
4
Reserved
Reserved
ns
ns
CL = 9
<1.875
ns
1,2,3,4,8
4
Reserved
Reserved
5,6,7,8,9
5,6,7
ns
CL = 10
ns
1,2,3
Supported CL Settings
Supported CWL Settings
nCK
nCK
- 45 -
Rev. 1.04
K4B2G0446D
K4B2G0846D
datasheet
DDR3L SDRAM
[ Table 48 ] DDR3-1600 Speed Bins
Speed
DDR3-1600
CL-nRCD-nRP
11-11-11
Units
NOTE
Parameter
Symbol
min
max
13.75
Internal read command to first data
tAA
20
ns
ns
ns
ns
(13.125)8
13.75
ACT to internal read or write delay time
PRE command period
tRCD
tRP
-
-
-
(13.125)8
13.75
(13.125)8
48.75
ACT to ACT or REF command period
ACT to PRE command period
tRC
(48.125)8
tRAS
35
9*tREFI
3.3
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
nCK
nCK
CWL = 5
tCK(AVG)
tCK(AVG)
tCK(AVG)
tCK(AVG)
tCK(AVG)
tCK(AVG)
tCK(AVG)
tCK(AVG)
tCK(AVG)
tCK(AVG)
tCK(AVG)
tCK(AVG)
tCK(AVG)
tCK(AVG)
tCK(AVG)
tCK(AVG)
tCK(AVG)
tCK(AVG)
tCK(AVG)
tCK(AVG)
tCK(AVG)
3.0
1,2,3,4,7,9,10
CL = 5
CWL = 6,7,8
CWL = 5
CWL = 6
CWL = 7, 8
CWL = 5
CWL = 6
CWL = 7
CWL = 8
CWL = 5
CWL = 6
CWL = 7
CWL = 8
CWL = 5,6
CWL = 7
CWL = 8
CWL = 5,6
CWL = 7
CWL = 8
CWL = 5,6,7
CWL = 8
Reserved
4
1,2,3,7
1,2,3,4,7
4
2.5
3.3
CL = 6
Reserved
Reserved
Reserved
4
1.875
1.875
<2.5
<2.5
1,2,3,4,7
1,2,3,4,7
4
CL = 7
Reserved
Reserved
Reserved
4
1,2,3,7
1,2,3,4,7
1,2,3,4
4
CL = 8
CL = 9
Reserved
Reserved
Reserved
1.5
1.5
<1.875
<1.875
<1.5
1,2,3,4,7
1,2,3,4
4
Reserved
Reserved
CL = 10
CL = 11
1,2,3,7
1,2,3,4
4
Reserved
Reserved
1.25
1,2,3,8
Supported CL Settings
Supported CWL Settings
5,6,7,8,9,10,11
5,6,7,8
- 46 -
Rev. 1.04
K4B2G0446D
K4B2G0846D
datasheet
DDR3L SDRAM
13.3.1 Speed Bin Table Notes
Absolute Specification {TOPER; VDDQ = VDD = 1.35V(1.28V~1.45V) & 1.5V(1.425V~1.575V)};
NOTE :
1. The CL setting and CWL setting result in tCK(AVG).MIN and tCK(AVG).MAX requirements. When making a selection of tCK(AVG), both need to be fulfilled: Requirements
from CL setting as well as requirements from CWL setting.
2. tCK(AVG).MIN limits: Since CAS Latency is not purely analog - data and strobe output are synchronized by the DLL - all possible intermediate frequencies may not be guar-
anteed. An application should use the next smaller JEDEC standard tCK(AVG) value (2.5, 1.875, 1.5, or 1.25 ns) when calculating CL [nCK] = tAA [ns] / tCK(AVG) [ns],
rounding up to the next "SupportedCL".
3. tCK(AVG).MAX limits: Calculate tCK(AVG) = tAA.MAX / CL SELECTED and round the resulting tCK(AVG) down to the next valid speed bin (i.e. 3.3ns or 2.5ns or 1.875 ns or
1.25 ns). This result is tCK(AVG).MAX corresponding to CL SELECTED.
4. "Reserved" settings are not allowed. User must program a different value.
5. Any DDR3-1066 speed bin also supports functional operation at lower frequencies as shown in the table which are not subject to Production Tests but verified by Design/
Characterization.
6. Any DDR3-1333 speed bin also supports functional operation at lower frequencies as shown in the table which are not subject to Production Tests but verified by Design/
Characterization.
7. Any DDR3-1600 speed bin also supports functional operation at lower frequencies as shown in the table which are not subject to Production Tests but verified by Design/
Characterization.
8. For devices supporting optional downshift to CL=7 and CL=9, tAA/tRCD/tRP min must be 13.125 ns or lower. SPD settings must be programmed to match. For example,
DDR3-1333(CL9) devices supporting downshift to DDR3-1066(CL7) should program 13.125 ns in SPD bytes for tAAmin (Byte 16), tRCDmin (Byte 18), and tRPmin (Byte
20). DDR3-1600(CL11) devices supporting downshift to DDR3-1333(CL9) or DDR3-1066(CL7) should program 13.125 ns in SPD bytes for tAAmin (Byte16), tRCDmin (Byte
18), and tRPmin (Byte 20). Once tRP (Byte 20) is programmed to 13.125ns, tRCmin (Byte 21,23) also should be programmed accordingly. For example, 49.125ns (tRASmin
+ tRPmin=36ns+13.125ns) for DDR3-1333(CL9) and 48.125ns (tRASmin+tRPmin=35ns+13.125ns) for DDR3-1600(CL11).
9. DDR3 800 AC timing apply if DRAM operates at lower than 800 MT/s data rate.
10. For CL5 support, refer to DIMM SPD information. DRAM is required to support CL5. CL5 is not mandatory in SPD coding.
- 47 -
Rev. 1.04
K4B2G0446D
K4B2G0846D
datasheet
DDR3L SDRAM
14. Timing Parameters by Speed Grade
[ Table 49 ] Timing Parameters by Speed Bin(Cont.)
Speed
Parameter
DDR3-800
DDR3-1066
DDR3-1333
DDR3-1600
Units
NOTE
Symbol
MIN
MAX
MIN
MAX
MIN
MAX
MIN
MAX
Clock Timing
tCK(DLL_OF
F)
Minimum Clock Cycle Time (DLL off mode)
8
-
8
-
8
-
8
-
ns
6
Average Clock Period
Clock Period
tCK(avg)
tCK(abs)
See Speed Bins Table
ps
ps
tCK(avg)min + tCK(avg)max + tCK(avg)min + tCK(avg)max + tCK(avg)min + tCK(avg)max + tCK(avg)min + tCK(avg)max +
tJIT(per)min
tJIT(per)max
tJIT(per)min
tJIT(per)max
tJIT(per)min
tJIT(per)max
tJIT(per)min
tJIT(per)max
Average high pulse width
tCH(avg)
tCL(avg)
0.47
0.53
0.47
0.53
0.47
0.53
0.47
0.53
tCK(avg)
Average low pulse width
0.47
0.53
0.47
0.53
0.47
0.53
0.47
0.53
tCK(avg)
ps
Clock Period Jitter
tJIT(per)
-100
100
-90
90
-80
80
-70
70
Clock Period Jitter during DLL locking period
Cycle to Cycle Period Jitter
tJIT(per, lck)
tJIT(cc)
-90
90
-80
80
-70
70
-60
60
ps
200
180
180
160
160
140
140
120
ps
Cycle to Cycle Period Jitter during DLL locking period
Cumulative error across 2 cycles
Cumulative error across 3 cycles
Cumulative error across 4 cycles
Cumulative error across 5 cycles
Cumulative error across 6 cycles
Cumulative error across 7 cycles
Cumulative error across 8 cycles
Cumulative error across 9 cycles
Cumulative error across 10 cycles
Cumulative error across 11 cycles
Cumulative error across 12 cycles
tJIT(cc, lck)
tERR(2per)
tERR(3per)
tERR(4per)
tERR(5per)
tERR(6per)
tERR(7per)
tERR(8per)
tERR(9per)
tERR(10per)
tERR(11per)
tERR(12per)
ps
- 147
- 175
- 194
- 209
- 222
- 232
- 241
- 249
- 257
- 263
- 269
147
175
194
209
222
232
241
249
257
263
269
- 132
- 157
- 175
- 188
- 200
- 209
- 217
- 224
- 231
- 237
- 242
132
157
175
188
200
209
217
224
231
237
242
- 118
- 140
- 155
- 168
- 177
- 186
- 193
- 200
- 205
- 210
- 215
118
140
155
168
177
186
193
200
205
210
215
-103
-122
-136
-147
-155
-163
-169
-175
-180
-184
-188
103
122
136
147
155
163
169
175
180
184
188
ps
ps
ps
ps
ps
ps
ps
ps
ps
ps
ps
tERR(nper)min = (1 + 0.68ln(n))*tJIT(per)min
tERR(nper)max = (1 = 0.68ln(n))*tJIT(per)max
Cumulative error across n = 13, 14 ... 49, 50 cycles
tERR(nper)
ps
24
Absolute clock HIGH pulse width
Absolute clock Low pulse width
Data Timing
tCH(abs)
tCL(abs)
0.43
0.43
-
-
0.43
0.43
-
-
0.43
0.43
-
-
0.43
0.43
-
-
tCK(avg)
tCK(avg)
25
26
DQS,DQS to DQ skew, per group, per access
DQ output hold time from DQS, DQS
DQ low-impedance time from CK, CK
DQ high-impedance time from CK, CK
tDQSQ
tQH
-
200
-
-
150
-
-
125
-
-
100
-
ps
tCK(avg)
ps
13
0.38
-800
-
0.38
-600
-
0.38
-500
-
0.38
-450
-
13, g
tLZ(DQ)
tHZ(DQ)
400
400
300
300
250
250
225
225
13,14, f
13,14, f
ps
1.35V
tDS(base)
AC160
90
75
40
25
-
-
-
-
-
-
-
-
-
-
-
-
-
ps
ps
ps
ps
ps
d, 17
d, 17
d, 17
d, 17
-
-
-
-
-
-
-
-
-
-
Data setup time to DQS, DQS referenced to
V
(AC)V (AC) levels
IH
IL
1.5V
tDS(base)
AC175
-
1.35V
tDH(base)
DC90
160
150
140
110
100
90
75
1.5V
65
1.35V
45
1.5V
55
45
25
Data hold time from DQS, DQS referenced to
(DC)V (DC) levels
V
IH
IL
tDH(base)
DC100
tDS(base)
AC135
Data setup time to DQS, DQS referenced to
(AC)V (AC) levels
V
IH
IL
tDS(base)
AC150
125
600
75
30
-
10
-
ps
ps
-
-
-
-
DQ and DM Input pulse width for each input
tDIPW
490
400
360
28
-
-
- 48 -
Rev. 1.04
K4B2G0446D
K4B2G0846D
datasheet
DDR3L SDRAM
[ Table 49 ] Timing Parameters by Speed Bin (Cont.)
Speed
DDR3-800
DDR3-1066
DDR3-1333
DDR3-1600
Units
NOTE
Parameter
Symbol
MIN
MAX
MIN
MAX
MIN
MAX
MIN
MAX
Data Strobe Timing
DQS, DQS differential READ Preamble
DQS, DQS differential READ Postamble
DQS, DQS differential output high time
DQS, DQS differential output low time
DQS, DQS differential WRITE Preamble
DQS, DQS differential WRITE Postamble
tRPRE
tRPST
tQSH
0.9
0.3
Note 19
0.9
0.3
Note 19
0.9
0.3
0.4
0.4
0.9
0.3
Note 19
0.9
0.3
0.4
0.4
0.9
0.3
Note 19
tCK
tCK
13, 19, g
11, 13, b
13, g
Note 11
Note 11
Note 11
Note 11
0.38
0.38
0.9
-
-
-
-
0.38
0.38
0.9
-
-
-
-
-
-
-
-
-
-
-
-
tCK(avg)
tCK(avg)
tCK
tQSL
13, g
tWPRE
tWPST
0.3
0.3
tCK
DQS, DQS rising edge output access time from rising
CK, CK
tDQSCK
tLZ(DQS)
tHZ(DQS)
-400
-800
-
400
400
400
-300
-600
-
300
300
300
-255
-500
-
255
250
250
-225
-450
-
225
225
225
ps
ps
ps
13,f
DQS, DQS low-impedance time (Referenced from RL-
1)
13,14,f
12,13,14
DQS, DQS high-impedance time (Referenced from
RL+BL/2)
DQS, DQS differential input low pulse width
DQS, DQS differential input high pulse width
DQS, DQS rising edge to CK, CK rising edge
DQS,DQS falling edge setup time to CK, CK rising edge
DQS,DQS falling edge hold time to CK, CK rising edge
Command and Address Timing
tDQSL
tDQSH
tDQSS
tDSS
0.45
0.45
-0.25
0.2
0.55
0.55
0.25
-
0.45
0.45
-0.25
0.2
0.55
0.55
0.25
-
0.45
0.45
-0.25
0.2
0.55
0.55
0.25
-
0.45
0.45
-0.27
0.18
0.18
0.55
0.55
0.27
-
tCK
29, 31
30, 31
c
tCK
tCK(avg)
tCK(avg)
tCK(avg)
c, 32
c, 32
tDSH
0.2
-
0.2
-
0.2
-
-
DLL locking time
tDLLK
tRTP
512
-
-
512
-
-
512
-
-
512
-
-
nCK
internal READ Command to PRECHARGE Command
delay
max
(4nCK,7.5ns)
max
(4nCK,7.5ns)
max
(4nCK,7.5ns)
max
(4nCK,7.5ns)
e
Delay from start of internal write transaction to internal
read command
max
(4nCK,7.5ns)
max
(4nCK,7.5ns)
max
(4nCK,7.5ns)
max
(4nCK,7.5ns)
tWTR
-
-
-
-
e,18
e
WRITE recovery time
tWR
15
4
-
-
15
4
-
-
15
4
-
-
15
4
-
-
ns
Mode Register Set command cycle time
tMRD
nCK
max
(12nCK,15ns)
max
(12nCK,15ns)
max
(12nCK,15ns)
max
(12nCK,15ns)
Mode Register Set command update delay
tMOD
-
-
-
-
-
-
-
-
CAS to CAS command delay
tCCD
tDAL(min)
tMPRR
tRAS
4
1
4
4
4
nCK
nCK
nCK
ns
Auto precharge write recovery + precharge time
Multi-Purpose Register Recovery Time
ACTIVE to PRECHARGE command period
WR + roundup (tRP / tCK(AVG))
-
1
-
1
-
1
-
22
e
See “Speed Bins and CL, tRCD, tRP, tRC and tRAS for corresponding Bin”
max
(4nCK,10ns)
max
(4nCK,7.5ns)
max
(4nCK,6ns)
max
(4nCK,6ns)
ACTIVE to ACTIVE command period for 1KB page size
ACTIVE to ACTIVE command period for 2KB page size
tRRD
tRRD
-
-
-
-
-
-
-
-
e
e
max
(4nCK,10ns)
max
(4nCK,10ns)
max
(4nCK,7.5ns)
max
(4nCK,7.5ns)
Four activate window for 1KB page size
Four activate window for 2KB page size
tFAW
tFAW
40
50
-
-
37.5
50
-
-
30
45
-
-
30
40
-
-
ns
ns
e
e
1.35V
tIS(base)
AC160
215
200
285
275
365
140
125
210
200
290
80
1.5V
65
-
-
-
60
45
-
-
-
-
-
ps
ps
ps
ps
ps
b,16
b,16
-
-
-
-
-
-
Command and Address setup time to CK, CK refer-
enced to V (AC) / V (AC) levels
IH
IL
tIS(base)
AC175
1.35V
150
tIH(base)
DC90
130
120
185
b,16
Command and Address hold time from CK, CK refer-
enced to V (DC) / V (DC) levels
IH
IL
1.5V
140
tIH(base)
DC100
b,16
1.35V
205
tIS(base)
AC135
-
b,16,27
-
-
Command and Address setup time to CK, CK refer-
enced to V (AC) / V (AC) levels
IH
IL
1.5V
190
tIS(base)
AC150
350
900
275
780
-
-
170
560
-
-
ps
ps
b,16,27
28
-
-
-
-
Control & Address Input pulse width for each input
Calibration Timing
tIPW
620
Power-up and RESET calibration time
Normal operation Full calibration time
Normal operation short calibration time
tZQinitI
tZQoper
tZQCS
512
256
64
-
-
-
512
256
64
-
-
-
512
256
64
-
-
-
512
256
64
-
-
-
nCK
nCK
nCK
23
- 49 -
Rev. 1.04
K4B2G0446D
K4B2G0846D
datasheet
DDR3L SDRAM
[ Table 49 ] Timing Parameters by Speed Bin
Speed
DDR3-800
DDR3-1066
DDR3-1333
DDR3-1600
Units
NOTE
Parameter
Symbol
MIN
MAX
MIN
MAX
MIN
MAX
MIN
MAX
Reset Timing
max(5nCK,
tRFC +
max(5nCK,
tRFC +
max(5nCK,
tRFC +
max(5nCK,
tRFC +
Exit Reset from CKE HIGH to a valid command
tXPR
-
-
-
-
10ns)
10ns)
10ns)
10ns)
Self Refresh Timing
max(5nCK,t
RFC +
10ns)
max(5nCK,t
RFC +
10ns)
max(5nCK,t
RFC +
10ns)
Exit Self Refresh to commands not requiring a locked
DLL
max(5nCK,t
RFC + 10ns)
tXS
-
-
-
-
Exit Self Refresh to commands requiring a locked DLL
tXSDLL
tCKESR
tDLLK(min)
-
-
tDLLK(min)
-
-
tDLLK(min)
-
-
tDLLK(min)
-
-
nCK
Minimum CKE low width for Self refresh entry to exit
timing
tCKE(min)+
1tCK
tCKE(min)+
1tCK
tCKE(min)+
1tCK
tCKE(min) +
1tCK
Valid Clock Requirement after Self Refresh Entry
(SRE) or Power-Down Entry (PDE)
max(5nCK,
10ns)
max(5nCK,
10ns)
max(5nCK,
10ns)
max(5nCK,
10ns)
tCKSRE
tCKSRX
-
-
-
-
-
-
-
-
Valid Clock Requirement before Self Refresh Exit
(SRX) or Power-Down Exit (PDX) or Reset Exit
max(5nCK,
10ns)
max(5nCK,
10ns)
max(5nCK,
10ns)
max(5nCK,
10ns)
Power Down Timing
Exit Power Down with DLL on to any valid com-
mand;Exit Precharge Power Down with DLL
frozen to commands not requiring a locked DLL
max
(3nCK,
7.5ns)
max
(3nCK,
7.5ns)
max
(3nCK,6ns)
max
(3nCK,6ns)
tXP
tXPDLL
tCKE
-
-
-
-
-
-
-
-
-
-
-
-
max
(10nCK,
24ns)
max
(10nCK,
24ns)
max
(10nCK,
24ns)
max
(10nCK,
24ns)
Exit Precharge Power Down with DLL frozen to com-
mands requiring a locked DLL
2
max
(3nCK,
7.5ns)
max
(3nCK,
5.625ns)
max
(3nCK,
5.625ns)
max
(3nCK,5ns)
CKE minimum pulse width
Command pass disable delay
tCPDED
tPD
1
-
1
-
1
-
1
-
nCK
tCK
Power Down Entry to Exit Timing
tCKE(min)
9*tREFI
tCKE(min)
9*tREFI
tCKE(min)
9*tREFI
tCKE(min)
9*tREFI
15
20
20
Timing of ACT command to Power Down entry
Timing of PRE command to Power Down entry
Timing of RD/RDA command to Power Down entry
tACTPDEN
tPRPDEN
tRDPDEN
1
1
-
-
-
1
1
-
-
-
1
1
-
-
-
1
1
-
-
-
nCK
nCK
RL + 4 +1
RL + 4 +1
RL + 4 +1
RL + 4 +1
WL + 4
+(tWR/
tCK(avg))
WL + 4
+(tWR/
tCK(avg))
WL + 4
+(tWR/
tCK(avg))
WL + 4
+(tWR/
tCK(avg))
Timing of WR command to Power Down entry
(BL8OTF, BL8MRS, BC4OTF)
tWRPDEN
tWRAPDEN
tWRPDEN
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
nCK
nCK
nCK
nCK
9
10
9
Timing of WRA command to Power Down entry
(BL8OTF, BL8MRS, BC4OTF)
WL + 4
+WR +1
WL + 4
+WR +1
WL + 4
+WR +1
WL + 4 +WR
+1
WL + 2
+(tWR/
tCK(avg))
WL + 2
+(tWR/
tCK(avg))
WL + 2
+(tWR/
tCK(avg))
WL + 2
+(tWR/
tCK(avg))
Timing of WR command to Power Down entry
(BC4MRS)
Timing of WRA command to Power Down entry
(BC4MRS)
WL +2 +WR
+1
WL +2 +WR
+1
WL +2 +WR
+1
WL +2 +WR
+1
tWRAPDEN
tREFPDEN
10
Timing of REF command to Power Down entry
Timing of MRS command to Power Down entry
ODT Timing
1
-
-
1
-
-
1
-
-
1
-
-
20,21
tMRSPDEN tMOD(min)
tMOD(min)
tMOD(min)
tMOD(min)
ODT high time without write command or with write
command and BC4
ODTH4
ODTH8
tAONPD
4
6
2
-
-
4
6
2
-
-
4
6
2
-
-
4
6
2
-
-
nCK
nCK
ns
ODT high time with Write command and BL8
Asynchronous RTT turn-on delay (Power-Down with
DLL frozen)
8.5
8.5
8.5
8.5
Asynchronous RTT turn-off delay (Power-Down with
DLL frozen)
tAOFPD
tAON
2
8.5
400
0.7
0.7
2
8.5
300
0.7
0.7
2
8.5
250
0.7
0.7
2
8.5
225
0.7
0.7
ns
RTT turn-on
-400
0.3
0.3
-300
0.3
0.3
-250
0.3
0.3
-225
0.3
0.3
ps
7,f
8,f
f
RTT_NOM and RTT_WR turn-off time from ODTLoff
reference
tAOF
tCK(avg)
tCK(avg)
RTT dynamic change skew
tADC
Write Leveling Timing
First DQS/DQS rising edge after write
leveling mode is programmed
tWLMRD
tWLDQSEN
tWLH
40
25
-
-
-
-
40
25
-
-
-
-
40
25
-
-
-
-
40
25
-
-
-
-
tCK
tCK
ps
3
3
DQS/DQS delay after write leveling
mode is programmed
Write leveling setup time from rising CK, CK crossing
to rising DQS, DQS crossing
325
325
245
245
195
195
165
165
Write leveling hold time from rising DQS, DQS cross-
ing to rising CK, CK crossing
tWLH
ps
Write leveling output delay
Write leveling output error
tWLO
0
0
9
2
0
0
9
2
0
0
9
2
0
0
7.5
2
ns
ns
tWLOE
- 50 -
Rev. 1.04
K4B2G0446D
K4B2G0846D
datasheet
DDR3L SDRAM
14.1 Jitter Notes
Specific Note a
Unit ’tCK(avg)’ represents the actual tCK(avg) of the input clock under operation. Unit ’nCK’ represents one clock cycle of the
input clock, counting the actual clock edges.ex) tMRD = 4 [nCK] means; if one Mode Register Set command is registered at Tm,
another Mode Register Set command may be registered at Tm+4, even if (Tm+4 - Tm) is 4 x tCK(avg) + tERR(4per),min.
Specific Note b
These parameters are measured from a command/address signal (CKE, CS, RAS, CAS, WE, ODT, BA0, A0, A1, etc.) transition
edge to its respective clock signal (CK/CK) crossing. The spec values are not affected by the amount of clock jitter applied (i.e.
tJIT(per), tJIT(cc), etc.), as the setup and hold are relative to the clock signal crossing that latches the command/address. That is,
these parameters should be met whether clock jitter is present or not.
Specific Note c
These parameters are measured from a data strobe signal (DQS(L/U), DQS(L/U)) crossing to its respective clock signal (CK, CK)
crossing. The spec values are not affected by the amount of clock jitter applied (i.e. tJIT(per), tJIT(cc), etc.), as these are relative
to the clock signal crossing. That is, these parameters should be met whether clock jitter is present or not.
Specific Note d
Specific Note e
These parameters are measured from a data signal (DM(L/U), DQ(L/U)0, DQ(L/U)1, etc.) transition edge to its respective data
strobe signal (DQS(L/U), DQS(L/U)) crossing.
For these parameters, the DDR3 SDRAM device supports tnPARAM [nCK] = RU{ tPARAM [ns] / tCK(avg) [ns] }, which is in clock
cycles, assuming all input clock jitter specifications are satisfied. For example, the device will support tnRP = RU{tRP / tCK(avg)},
which is in clock cycles, if all input clock jitter specifications are met. This means: For DDR3-800 6-6-6, of which tRP = 15ns, the
device will support tnRP = RU{tRP / tCK(avg)} = 6, as long as the input clock jitter specifications are met, i.e. Precharge com-
mand at Tm and Active command at Tm+6 is valid even if (Tm+6 - Tm) is less than 15ns due to input clock jitter.
Specific Note f
When the device is operated with input clock jitter, this parameter needs to be derated by the actual tERR(mper),act of the input
clock, where 2 <= m <= 12. (output deratings are relative to the SDRAM input clock.)
For example, if the measured jitter into a DDR3-800 SDRAM has tERR(mper),act,min = - 172 ps and tERR(mper),act,max = +
193 ps, then tDQSCK,min(derated) = tDQSCK,min - tERR(mper),act,max = - 400 ps - 193 ps = - 593 ps and tDQSCK,max(der-
ated) = tDQSCK,max - tERR(mper),act,min = 400 ps + 172 ps = + 572 ps. Similarly, tLZ(DQ) for DDR3-800 derates to
tLZ(DQ),min(derated) = - 800 ps - 193 ps = - 993 ps and tLZ(DQ),max(derated) = 400 ps + 172 ps = + 572 ps. (Caution on the
min/max usage!)
Note that tERR(mper),act,min is the minimum measured value of tERR(nper) where 2 <= n <=
12, and tERR(mper),act,max is the maximum measured value of tERR(nper) where 2 <= n <= 12.
Specific Note g
When the device is operated with input clock jitter, this parameter needs to be derated by the actual tJIT(per),act of the input
clock. (output deratings are relative to the SDRAM input clock.) For example, if the measured jitter into a DDR3-800 SDRAM has
tCK(avg),act = 2500 ps, tJIT(per),act,min = - 72 ps and tJIT(per),act,max = + 93 ps, then tRPRE,min(derated) = tRPRE,min +
tJIT(per),act,min = 0.9 x tCK(avg),act + tJIT(per),act,min = 0.9 x 2500 ps - 72 ps = + 2178 ps. Similarly, tQH,min(derated) =
tQH,min + tJIT(per),act,min = 0.38 x tCK(avg),act + tJIT(per),act,min = 0.38 x 2500 ps - 72 ps = + 878 ps. (Caution on the min/
max usage!)
- 51 -
Rev. 1.04
K4B2G0446D
K4B2G0846D
datasheet
DDR3L SDRAM
14.2 Timing Parameter Notes
1. Actual value dependant upon measurement level definitions which are TBD.
2. Commands requiring a locked DLL are: READ (and RAP) and synchronous ODT commands.
3. The max values are system dependent.
4. WR as programmed in mode register
5. Value must be rounded-up to next higher integer value
6. There is no maximum cycle time limit besides the need to satisfy the refresh interval, tREFI.
7. For definition of RTT turn-on time tAON see "Device Operation & Timing Diagram Datasheet"
8. For definition of RTT turn-off time tAOF see "Device Operation & Timing Diagram Datasheet".
9. tWR is defined in ns, for calculation of tWRPDEN it is necessary to round up tWR / tCK to the next integer.
10. WR in clock cycles as programmed in MR0
11. The maximum read postamble is bound by tDQSCK(min) plus tQSH(min) on the left side and tHZ(DQS)max on the right side. See "Device Operation & Timing
Diagram Datasheet.
12. Output timing deratings are relative to the SDRAM input clock. When the device is operated with input clock jitter, this parameter needs to be derated
by TBD
13. Value is only valid for RON34
14. Single ended signal parameter. Refer to chapter 8 and chapter 9 for definition and measurement method.
15. tREFI depends on T
OPER
16. tIS(base) and tIH(base) values are for 1V/ns CMD/ADD single-ended slew rate and 2V/ns CK, CK differential slew rate, Note for DQ and DM signals,
(DC) = V DQ(DC). For input only pins except RESET, V (DC)=V CA(DC).
V
REF
REF
REF
REF
See Address/Command Setup, Hold and Derating : on page 53. .
17. tDS(base) and tDH(base) values are for 1V/ns DQ single-ended slew rate and 2V/ns DQS, DQS differential slew rate. Note for DQ and DM signals,
(DC)= V DQ(DC). For input only pins except RESET, V (DC)=V CA(DC).
V
REF
REF
REF
REF
See Data Setup, Hold and Slew Rate Derating : on page 59.
18. Start of internal write transaction is defined as follows ;
For BL8 (fixed by MRS and on-the-fly) : Rising clock edge 4 clock cycles after WL.
For BC4 (on-the-fly) : Rising clock edge 4 clock cycles after WL
For BC4 (fixed by MRS) : Rising clock edge 2 clock cycles after WL
19. The maximum read preamble is bound by tLZDQS(min) on the left side and tDQSCK(max) on the right side. See "Device Operation & Timing Diagram
Datasheet"
20. CKE is allowed to be registered low while operations such as row activation, precharge, autoprecharge or refresh are in progress, but power-down
IDD spec will not be applied until finishing those operations.
21. Although CKE is allowed to be registered LOW after a REFRESH command once tREFPDEN(min) is satisfied, there are cases where additional time
such as tXPDLL(min) is also required. See "Device Operation & Timing Diagram Datasheet".
22. Defined between end of MPR read burst and MRS which reloads MPR or disables MPR function.
23. One ZQCS command can effectively correct a minimum of 0.5 % (ZQCorrection) of RON and RTT impedance error within 64 nCK for all speed bins assuming
the maximum sensitivities specified in the ’Output Driver Voltage and Temperature Sensitivity’ and ’ODT Voltage and Temperature Sensitivity’ tables. The
appropriate interval between ZQCS commands can be determined from these tables and other application specific parameters.
One method for calculating the interval between ZQCS commands, given the temperature (Tdriftrate) and voltage (Vdriftrate) drift rates that the SDRAM is sub-
ject to in the application, is illustrated. The interval could be defined by the following formula:
ZQCorrection
(TSens x Tdriftrate) + (VSens x Vdriftrate)
where TSens = max(dRTTdT, dRONdTM) and VSens = max(dRTTdV, dRONdVM) define the SDRAM temperature and voltage sensitivities.
For example, if TSens = 1.5% /°C, VSens = 0.15% / mV, Tdriftrate = 1°C / sec and Vdriftrate = 15 mV / sec, then the interval between ZQCS commands is calcu-
lated as:
0.5
~
~
128ms
= 0.133
(1.5 x 1) + (0.15 x 15)
24. n = from 13 cycles to 50 cycles. This row defines 38 parameters.
25. tCH(abs) is the absolute instantaneous clock high pulse width, as measured from one rising edge to the following falling edge.
26. tCL(abs) is the absolute instantaneous clock low pulse width, as measured from one falling edge to the following rising edge.
27. The tIS(base) AC150 specifications are adjusted from the tIS(base) specification by adding an additional 100 ps of derating to accommodate for the lower alter-
nate threshold of 150 mV and another 25 ps to account for the earlier reference point [(175 mv - 150 mV) / 1 V/ns].
28. Pulse width of a input signal is defined as the width between the first crossing of V
(DC) and the consecutive crossing of V
(DC)
REF
REF
29. tDQSL describes the instantaneous differential input low pulse width on DQS-DQS, as measured from one falling edge to the next consecutive rising edge.
30. tDQSH describes the instantaneous differential input high pulse width on DQS-DQS, as measured from one rising edge to the next consecutive falling edge.
31. tDQSH, act + tDQSL, act = 1 tCK, act ; with tXYZ, act being the actual measured value of the respective timing parameter in the application.
32. tDSH, act + tDSS, act = 1 tCK, act ; with tXYZ, act being the actual measured value of the respective timing parameter in the application.
- 52 -
Rev. 1.04
K4B2G0446D
K4B2G0846D
datasheet
DDR3L SDRAM
14.3 Address/Command Setup, Hold and Derating :
For all input signals the total tIS (setup time) and tIH (hold time) required is calculated by adding the data sheet tIS(base) and tIH(base) value (see
Table 50) to the ΔtIS and ΔtIH derating value (see Table 51) respectively.
Example: tIS (total setup time) = tIS(base) + ΔtIS Setup (tIS) nominal slew rate for a rising signal is defined as the slew rate between the last crossing of
V
REF(DC) and the first crossing of VIH(AC)min. Setup (tIS) nominal slew rate for a falling signal is defined as the slew rate between the last crossing of
VREF(DC) and the first crossing of VIL(AC)max. If the actual signal is always earlier than the nominal slew rate line between shaded ’VREF(DC) to ac
region’, use nominal slew rate for derating value (see Figure 21). If the actual signal is later than the nominal slew rate line anywhere between shaded
’VREF(DC) to ac region’, the slew rate of a tangent line to the actual signal from the ac level to dc level is used for derating value (see Figure 23).
Hold (tIH) nominal slew rate for a rising signal is defined as the slew rate between the last crossing of VIL(DC)max and the first crossing of VREF(DC).
Hold (tIH) nominal slew rate for a falling signal is defined as the slew rate between the last crossing of VIH(DC)min and the first crossing of VREF(DC). If
the actual signal is always later than the nominal slew rate line between shaded ’dc to VREF(DC) region’, use nominal slew rate for derating value (see
Figure 22). If the actual signal is earlier than the nominal slew rate line anywhere between shaded ’dc to VREF(DC) region’, the slew rate of a tangent line
to the actual signal from the dc level to VREF(DC) level is used for derating value (see Figure 24).
For a valid transition the input signal has to remain above/below VIH/IL(AC) for some time tVAC (see Table 51).
Although for slow slew rates the total setup time might be negative (i.e. a valid input signal will not have reached VIH/IL(AC) at the time of the rising clock
transition) a valid input signal is still required to complete the transition and reach VIH/IL(AC).
For slew rates in between the values listed in Table 51, the derating values may obtained by linear interpolation.
These values are typically not subject to production test. They are verified by design and characterization.
[ Table 50 ] ADD/CMD Setup and Hold Base-Values for 1V/ns
[ps]
DDR3L-800
215
DDR3L-1066
DDR3L-1333
DDR3L-1600
reference
VIH/L(AC)
VIH/L(AC)
VIH/L(DC)
tIS(base) AC160
tIS(base) AC135
tIH(base)-DC90
140
290
210
80
60
365
205
150
185
130
285
NOTE :
1. AC/DC referenced for 1V/ns Address/Command slew rate and 2 V/ns differential CK-Ck slew rate
2. The tIS(base) AC135 specifications are adjusted from the tIS(base) AC160 specification by adding an additional 125ps for DDR3L-800/1066 or 100ps for DDR3L-1333/1600
of derating to accommodate for the lower alternate threshold of 135mV and another 25ps to account for the earlier reference point [(160mV-135mV)/1 V/ns]
[ Table 51 ] Derating values DDR3-800/1066/1333/1600 tIS/tIH-AC/DC based
ΔtIS, ΔtIH Derating [ps] AC/DC based
AC160 Threshold -> VIH(AC) = VREF(DC) + 160mV, VIL(AC) = VREF(DC) - 160mV
CLK,CLK Differential Slew Rate
4.0 V/ns
3.0 V/ns
2.0 V/ns
1.8 V/ns
1.6 V/ns
1.4V/ns
ΔtIS
1.2V/ns
ΔtIS
1.0V/ns
ΔtIS
ΔtIS
ΔtIH
45
ΔtIS
ΔtIH
45
ΔtIS
ΔtIH
45
ΔtIS
ΔtIH
53
38
8
ΔtIS
ΔtIH
61
46
16
13
9
ΔtIH
69
54
24
21
17
11
ΔtIH
79
64
32
31
27
21
14
4
ΔtIH
95
80
50
47
43
37
30
20
5
2.0
1.5
1.0
0.9
0.8
0.7
0.6
0.5
0.4
80
53
0
80
53
0
80
53
0
88
61
8
96
69
16
15
13
11
8
104
77
24
23
21
19
16
4
112
85
32
31
29
27
24
12
-8
120
93
40
39
37
35
32
20
0
30
30
30
0
0
0
CMD/
ADD
Slew
rate
-1
-3
-1
-3
-1
-3
7
5
-3
-8
-3
-8
-3
-8
5
1
-5
-13
-20
-30
-45
-5
-13
-20
-30
-45
-5
-13
-20
-30
-45
3
-5
3
V/ns
-8
-8
-8
0
-12
-22
-37
-4
4
-20
-40
-20
-40
-20
-40
-12
-32
-4
-14
-29
-6
-24
-16
-21
-11
- 53 -
Rev. 1.04
K4B2G0446D
K4B2G0846D
datasheet
DDR3L SDRAM
[ Table 52 ] Derating values DDR3-800/1066/1333/1600 tIS/tIH-AC/DC based - Alternate AC135Threshold
ΔtIS, ΔtIH Derating [ps] AC/DC based
Alternate AC135 Threshold -> VIH(AC) = VREF(DC) + 135mV, VIL(AC) = VREF(DC) - 135mV
CLK,CLK Differential Slew Rate
4.0 V/ns
3.0 V/ns
2.0 V/ns
1.8 V/ns
1.6 V/ns
1.4V/ns
ΔtIS
1.2V/ns
ΔtIS
1.0V/ns
ΔtIS
ΔtIS
ΔtIH
45
ΔtIS
ΔtIH
45
ΔtIS
ΔtIH
45
ΔtIS
ΔtIH
53
38
8
ΔtIS
ΔtIH
61
46
16
13
9
ΔtIH
69
54
24
21
17
11
ΔtIH
79
64
32
31
27
21
14
4
ΔtIH
95
80
50
47
43
37
30
20
5
2.0
1.5
1.0
0.9
0.8
0.7
0.6
0.5
0.4
68
45
0
68
45
0
68
45
0
76
53
8
84
61
16
18
19
22
25
21
14
92
69
24
26
27
30
33
29
22
100
77
32
34
35
38
41
37
30
108
85
40
42
43
46
49
45
38
30
30
30
0
0
0
CMD/
ADD
Slew
rate
2
-3
2
-3
2
-3
10
11
14
17
13
6
5
3
-8
3
-8
3
-8
1
6
-13
-20
-30
-45
6
-13
-20
-30
-45
6
-13
-20
-30
-45
-5
3
V/ns
9
9
9
-12
-22
-37
-4
4
5
5
5
-14
-29
-6
-3
-3
-3
-21
-11
[ Table 53 ] Required time tVAC above VIH(AC) {blow VIL(AC)} for valid transition
tVAC @160mV [ps]
Slew Rate[V/ns]
tVAC @135mV [ps]
min
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
max
min
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
max
>2.0
2.0
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
1.5
1.0
0.9
0.8
0.7
0.6
0.5
< 0.5
- 54 -
Rev. 1.04
K4B2G0446D
K4B2G0846D
datasheet
DDR3L SDRAM
NOTE :Clock and Strobe are drawn on a different time scale.
tIH
tIH
tIS
tIS
CK
CK
DQS
DQS
tDH
tDH
tDS
tDS
VDDQ
tVAC
VIH(AC) min
VREF to ac
region
V
IH(DC) min
nominal
slew rate
VREF(DC)
nominal slew
rate
VIL(DC) max
VREF to ac
region
VIL(AC) max
tVAC
VSS
Δ TF
Δ TR
V
REF(DC) - VIL(AC)max
Setup Slew Rate
Rising Signal
VIH(AC)min - VREF(DC)
Setup Slew Rate
Falling Signal
=
=
Δ TF
Δ TR
Figure 21. Illustration of nominal slew rate and tVAC for setup time tDS (for DQ with respect to strobe) and tIS
(for ADD/CMD with respect to clock).
- 55 -
Rev. 1.04
K4B2G0446D
K4B2G0846D
datasheet
DDR3L SDRAM
NOTE :Clock and Strobe are drawn on a different time scale.
tIH
tIH
tIS
tIS
CK
CK
DQS
DQS
tDH
tDH
tDS
tDS
VDDQ
VIH(AC) min
V
IH(DC) min
dc to VREF
region
nominal
slew rate
VREF(DC)
nominal
slew rate
dc to VREF
region
VIL(DC) max
VIL(AC) max
VSS
Δ TR
Δ TF
Hold Slew Rate
Rising Signal
V
REF(DC) - VIL(DC)max
Hold Slew Rate
Falling Signal
V
IH(DC)min - VREF(DC)
=
=
Δ TR
Δ TF
Figure 22. Illustration of nominal slew rate for hold time tDH (for DQ with respect to strobe) and tIH
(for ADD/CMD with respect to clock).
- 56 -
Rev. 1.04
K4B2G0446D
K4B2G0846D
datasheet
DDR3L SDRAM
NOTE :Clock and Strobe are drawn on a different time scale.
tIH
tIH
tIS
tIS
CK
CK
DQS
DQS
tDH
tDH
tDS
tDS
VDDQ
tVAC
nominal
line
VIH(AC) min
V
REF to ac
region
VIH(DC) min
tangent
line
VREF(DC)
tangent
line
VIL(DC) max
VIL(AC) max
VREF to ac
region
nominal
line
Δ TR
tVAC
VSS
tangent line[VIH(AC)min - VREF(DC)]
Setup Slew Rate
Rising Signal
=
Δ TR
Δ TF
Setup Slew Rate
Falling Signal
tangent line[VREF(DC) - VIL(AC)max]
=
Δ TF
Figure 23. Illustration of tangent line for setup time tDS (for DQ with respect to strobe) and tIS
(for ADD/CMD with respect to clock)
- 57 -
Rev. 1.04
K4B2G0446D
K4B2G0846D
datasheet
DDR3L SDRAM
NOTE :Clock and Strobe are drawn on a different time scale.
tIH
tIH
tIS
tIS
CK
CK
DQS
DQS
tDH
tDH
tDS
tDS
VDDQ
VIH(AC) min
nominal
line
V
IH(DC) min
dc to VREF
region
tangent
line
VREF(DC)
tangent
line
dc to VREF
region
nominal
line
VIL(DC) max
VIL(AC) max
VSS
Δ TF
Δ TR
tangent line [ VREF(DC) - VIL(DC)max ]
Hold Slew Rate
Rising Signal
=
Δ TR
tangent line [ VIH(DC)min - VREF(DC) ]
Hold Slew Rate
=
Falling Signal
Δ TF
Figure 24. Illustration of tangent line for hold time tDH (for DQ with respect to strobe) and tIH
(for ADD/CMD with respect to clock)
- 58 -
Rev. 1.04
K4B2G0446D
K4B2G0846D
datasheet
DDR3L SDRAM
14.4 Data Setup, Hold and Slew Rate Derating :
For all input signals the total tDS (setup time) and tDH (hold time) required is calculated by adding the data sheet tDS(base) and tDH(base) value (see
Table 54) to the Δ tDS and ΔtDH (see Table 55) derating value respectively. Example: tDS (total setup time) = tDS(base) + ΔtDS.
Setup (tDS) nominal slew rate for a rising signal is defined as the slew rate between the last crossing of VREF(DC) and the first crossing of VIH(AC)min.
Setup (tDS) nominal slew rate for a falling signal is defined as the slew rate between the last crossing of VREF(DC) and the first crossing of VIL(AC)max
(see Figure 25). If the actual signal is always earlier than the nominal slew rate line between shaded ’VREF(DC) to ac region’, use nominal slew rate for
derating value. If the actual signal is later than the nominal slew rate line anywhere
between shaded ’VREF(DC) to ac region’, the slew rate of a tangent line to the actual signal from the ac level to dc level is used for derating value (see
Figure 27).
Hold (tDH) nominal slew rate for a rising signal is defined as the slew rate between the last crossing of VIL(DC)max and the first crossing of VREF(DC).
Hold (tDH) nominal slew rate for a falling signal is defined as the slew rate between the last crossing of VIH(DC)min and the first crossing of VREF(DC)
(see Figure ). If the actual signal is always later than the nominal slew rate line between shaded ’dc level to VREF(DC) region’, use nominal slew rate for
derating value. If the actual signal is earlier than the nominal slew rate line anywhere between shaded ’dc to VREF(DC) region’, the slew rate of a tangent
line to the actual signal from the dc level to VREF(DC) level is used for derating value (see Figure 28).
For a valid transition the input signal has to remain above/below VIH/IL(AC) for some time tVAC (see Table 56).
Although for slow slew rates the total setup time might be negative (i.e. a valid input signal will not have reached VIH/IL(AC) at the time of the rising clock
transition) a valid input signal is still required to complete the transition and reach VIH/IL(AC).
For slew rates in between the values listed in the tables the derating values may obtained by linear interpolation.
These values are typically not subject to production test. They are verified by design and characterization.
[ Table 54 ] Data Setup and Hold Base-Values
[ps]
DDR3-800
90
DDR3-1066
DDR3-1333
DDR3-1600
reference
VIH/L(AC)
VIH/L(AC)
VIH/L(DC)
tDS(base) AC160
tDS(base) AC135
tDH(base) DC90
40
90
-
-
140
45
75
25
55
160
110
NOTE : AC/DC referenced for 1V/ns DQ-slew rate and 2 V/ns DQS slew rate)
[ Table 55 ] Derating values DDR3-800/1066 tDS/tDH-AC/DC based - (AC160)
ΔtDS, ΔtDH Derating in [ps] AC/DC based1
DQS,DQS Differential Slew Rate
4.0 V/ns
3.0 V/ns
2.0 V/ns
1.8 V/ns
1.6 V/ns
1.4V/ns
1.2V/ns
1.0V/ns
ΔtDS ΔtDH ΔtDS ΔtDH ΔtDS ΔtDH ΔtDS ΔtDH ΔtDS ΔtDH ΔtDS ΔtDH ΔtDS ΔtDH ΔtDS ΔtDH
2.0
1.5
1.0
0.9
0.8
0.7
0.6
0.5
0.4
80
53
0
45
30
0
80
53
0
45
30
0
80
53
0
-1
-3
45
30
0
-3
-8
61
8
7
5
3
38
8
5
1
-5
16
15
13
11
8
16
13
9
3
-4
DDR3 DQ
Slew
800/ rate
1066 V/ns
-1
-3
23
21
19
16
4
21
17
11
4
-
29
27
24
12
-8
27
21
14
4
35
32
20
0
37
30
20
5
-6
-11
NOTE : 1. Cell contents shaded in red are defined as ’not supported’.
[ Table 56 ] Derating values for DDR3-800/1066/1333/1600 tDS/tDH - (AC135)
ΔtDS, ΔtDH Derating in [ps] AC/DC based1
DQS,DQS Differential Slew Rate
4.0 V/ns
3.0 V/ns
2.0 V/ns
1.8 V/ns
1.6 V/ns
1.4V/ns
1.2V/ns
1.0V/ns
ΔtDS ΔtDH ΔtDS ΔtDH ΔtDS ΔtDH ΔtDS ΔtDH ΔtDS ΔtDH ΔtDS ΔtDH ΔtDS ΔtDH ΔtDS ΔtDH
2.0
1.5
1.0
0.9
0.8
0.7
0.6
0.5
0.4
68
45
0
-
-
-
-
-
-
45
30
0
-
-
-
-
-
-
68
45
0
2
-
-
-
-
-
45
30
0
-3
-
-
-
-
-
68
45
0
2
3
-
-
-
-
45
30
0
-3
-8
-
-
-
-
-
-
-
-
16
13
9
3
-4
-
-
-
-
26
27
30
33
29
-
-
-
-
21
17
11
4
-6
-
-
-
-
-
35
38
41
37
30
-
-
-
-
27
21
14
4
-
-
-
-
-
-
-
-
53
8
10
11
14
-
38
8
5
1
-5
-
16
18
19
22
25
-
DQ
Slew
rate
-
-
46
49
45
38
37
30
20
5
V/ns
-
-
-
-
-
-
-11
NOTE : 1. Cell contents shaded in red are defined as ’not supported’.
- 59 -
Rev. 1.04
K4B2G0446D
K4B2G0846D
datasheet
DDR3L SDRAM
[ Table 57 ] Required time tVAC above VIH(AC) {blow VIL(AC)} for valid transition
tVAC[ps] DDR3-800/1066 (AC160)
Slew Rate[V/ns]
tVAC[ps] DDR3-800/1066/1333/1600 (AC135)
min
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
max
min
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
max
>2.0
2.0
1.5
1.0
0.9
0.8
0.7
0.6
0.5
<0.5
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
- 60 -
Rev. 1.04
K4B2G0446D
K4B2G0846D
datasheet
DDR3L SDRAM
NOTE :Clock and Strobe are drawn on a different time scale.
tIH
tIH
tIS
tIS
CK
CK
DQS
DQS
tDH
tDH
tDS
tDS
VDDQ
tVAC
VIH(AC) min
VREF to ac
region
V
IH(DC) min
nominal
slew rate
VREF(DC)
nominal slew
rate
VIL(DC) max
VREF to ac
region
VIL(AC) max
tVAC
VSS
Δ TF
Δ TR
V
REF(DC) - VIL(AC)max
Setup Slew Rate VIH(AC)min - VREF(DC)
=
Setup Slew Rate
Falling Signal
=
Rising Signal
Δ TF
Δ TR
Figure 25. Illustration of nominal slew rate and tVAC for setup time tDS (for DQ with respect to strobe) and tIS
(for ADD/CMD with respect to clock).
- 61 -
Rev. 1.04
K4B2G0446D
K4B2G0846D
datasheet
DDR3L SDRAM
NOTE :Clock and Strobe are drawn on a different time scale.
tIH
tIH
tIS
tIS
CK
CK
DQS
DQS
tDH
tDH
tDS
tDS
VDDQ
VIH(AC) min
V
IH(DC) min
dc to VREF
region
nominal
slew rate
VREF(DC)
nominal
slew rate
dc to VREF
region
VIL(DC) max
VIL(AC) max
VSS
Δ TR
Δ TF
Hold Slew Rate
Rising Signal
V
REF(DC) - VIL(DC)max
Hold Slew Rate
Falling Signal
V
IH(DC)min - VREF(DC)
=
=
Δ TR
Δ TF
Figure 26. Illustration of nominal slew rate for hold time tDH (for DQ with respect to strobe) and tIH
(for ADD/CMD with respect to clock).
- 62 -
Rev. 1.04
K4B2G0446D
K4B2G0846D
datasheet
DDR3L SDRAM
NOTE :Clock and Strobe are drawn on a different time scale.
tIH
tIH
tIS
tIS
CK
CK
DQS
DQS
tDH
tDH
tDS
tDS
VDDQ
tVAC
nominal
line
VIH(AC) min
V
REF to ac
region
VIH(DC) min
tangent
line
VREF(DC)
tangent
line
VIL(DC) max
VIL(AC) max
VREF to ac
region
nominal
line
Δ TR
tVAC
VSS
tangent line[VIH(AC)min - VREF(DC)]
Setup Slew Rate
Rising Signal
=
Δ TR
Δ TF
Setup Slew Rate
Falling Signal
tangent line[VREF(DC) - VIL(AC)max]
=
Δ TF
Figure 27. Illustration of tangent line for setup time tDS (for DQ with respect to strobe) and tIS
(for ADD/CMD with respect to clock)
- 63 -
Rev. 1.04
K4B2G0446D
K4B2G0846D
datasheet
DDR3L SDRAM
NOTE :Clock and Strobe are drawn on a different time scale.
tIH
tIH
tIS
tIS
CK
CK
DQS
DQS
tDH
tDH
tDS
tDS
VDDQ
VIH(AC) min
nominal
line
V
IH(DC) min
dc to VREF
region
tangent
line
VREF(DC)
tangent
line
dc to VREF
region
nominal
line
VIL(DC) max
VIL(AC) max
VSS
Δ TF
Δ TR
tangent line [ VREF(DC) - VIL(DC)max ]
Hold Slew Rate
Rising Signal
=
Δ TR
tangent line [ VIH(DC)min - VREF(DC) ]
Hold Slew Rate
=
Falling Signal
Δ TF
Figure 28. Illustration of tangent line for hold time tDH (for DQ with respect to strobe) and tIH
(for ADD/CMD with respect to clock)
- 64 -
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