K4H560438E-NCA2 [SAMSUNG]
256Mb E-die DDR SDRAM Specification 54pin sTSOP(II); 256Mb的E-死DDR SDRAM规格54pin sTSOP （ II ）
| 型号： | K4H560438E-NCA2 |
| 厂家： | 
SAMSUNG |
| 描述： | 256Mb E-die DDR SDRAM Specification 54pin sTSOP(II) |
| 文件： | 总24页 (文件大小：215K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
DDR SDRAM 256Mb E-die (x4, x8)
DDR SDRAM
256Mb E-die DDR SDRAM Specification
54pin sTSOP(II)
INFORMATION IN THIS DOCUMENT IS PROVIDED IN RELATION TO SAMSUNG PRODUCTS,
AND IS SUBJECT TO CHANGE WITHOUT NOTICE.
NOTHING IN THIS DOCUMENT SHALL BE CONSTRUED AS GRANTING ANY LICENSE,
EXPRESS OR IMPLIED, BY ESTOPPEL OR OTHERWISE,
TO ANY INTELLECTUAL PROPERTY RIGHTS IN SAMSUNG PRODUCTS OR TECHNOLOGY. ALL
INFORMATION IN THIS DOCUMENT IS PROVIDED
ON AS "AS IS" BASIS WITHOUT GUARANTEE OR WARRANTY OF ANY KIND.
1. For updates or additional information about Samsung products, contact your nearest Samsung office.
2. Samsung products are not intended for use in life support, critical care, medical, safety equipment, or similar
applications where Product failure couldresult in loss of life or personal or physical harm, or any military or
defense application, or any governmental procurement to which special terms or provisions may apply.
Samsung Electronics reserves the right to change products or specification without notice.
Rev. 1.3 April, 2005
DDR SDRAM 256Mb E-die (x4, x8)
DDR SDRAM
256Mb E-die Revision History
Revision0.0 (February, 2003)
- First version for internal review
Revision1.0 (July, 2003)
- Finalized datasheet
Revision1.1 (August, 2003)
- Corrected typo in package phyisical dimension and deleted speed AA.
Revision1.2 (October, 2004)
- Corrected typo.
Revision1.3 (April, 2005)
- Added notice and corrected typo.
Rev. 1.3 April, 2005
DDR SDRAM 256Mb E-die (x4, x8)
DDR SDRAM
Key Features
• Double-data-rate architecture; two data transfers per clock cycle
• Bidirectional data strobe(DQS)
• Four banks operation
• Differential clock inputs(CK and CK)
• DLL aligns DQ and DQS transition with CK transition
• MRS cycle with address key programs
-. Read latency 2, 2.5 (clock)
-. Burst length (2, 4, 8)
-. Burst type (sequential & interleave)
• All inputs except data & DM are sampled at the positive going edge of the system clock(CK)
• Data I/O transactions on both edges of data strobe
• Edge aligned data output, center aligned data input
• DM for write masking only (x4, x8)
• Auto & Self refresh
• 7.8us refresh interval(8K/64ms refresh)
• Maximum burst refresh cycle : 8
• 54pin sTSOP(II)-300 package
Ordering Information
Part No.
Org.
Max Freq.
Interface
Package
K4H560438E-NC/LB3
K4H560438E-NC/LA2
K4H560438E-NC/LB0
K4H560838E-NC/LB3
K4H560838E-NC/LA2
K4H560838E-NC/LB0
B3(DDR333@CL=2.5)
A2(DDR266@CL=2)
B0(DDR266@CL=2.5)
B3(DDR333@CL=2.5)
A2(DDR266@CL=2)
B0(DDR266@CL=2.5)
64M x 4
SSTL2
54pin sTSOP(II)-300
32M x 8
SSTL2
54pin sTSOP(II)-300
Operating Frequencies
B3(DDR333@CL=2.5) AA(DDR266@CL=2.0) A2(DDR266@CL=2.0) B0(DDR266@CL=2.5)
Speed @CL2
133MHz
166MHz
133MHz
133MHz
133MHz
133MHz
100MHz
133MHz
Speed @CL2.5
*CL : CAS Latency
Rev. 1.3 April, 2005
DDR SDRAM 256Mb E-die (x4, x8)
DDR SDRAM
Pin Description
54pin sTSOP(II)-300
32Mb x 8
64Mb x 4
VSS
NC
VSS
DQ7
VSSQ
DQ6
VDDQ
DQ5
VSSQ
DQ4
VDDQ
NC
1
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
VDD
DQ0
VDDQ
DQ1
VSSQ
DQ2
VDDQ
DQ3
VSSQ
NC
VDD
NC
2
VSSQ
DQ3
VDDQ
NC
3
VDDQ
DQ0
VSSQ
NC
4
5
6
VSSQ
DQ2
VDDQ
NC
7
VDDQ
DQ1
VSSQ
NC
8
54 PinsTSOP(II)
300mil x 551mil
(7.62mm x 14.00mm)
9
10
11
12
13
14
15
16
17
18
19
20
21
VSSQ
DQS
VREF
VSS
DM
VSSQ
DQS
VREF
VSS
DM
VDDQ
NC
VDDQ
NC
(0.5 mm Pin Pitch)
NC
NC
VDD
WE
VDD
WE
Bank Address
BA0-BA1
CK
CK
CAS
RAS
CS
CAS
RAS
CS
Row Address
A0-A12
CK
CK
CKE
A12
A11
A9
CKE
A12
A11
NC
NC
Auto Precharge
A10
BA0
BA1
AP/A10
A0
BA0
BA1
AP/A10
A0
A9
A8
A8
22
23
A7
A7
A6
A6
A1
A1
24
25
26
27
A5
A5
A2
A2
A4
A4
A3
A3
VSS
VSS
VDD
VDD
Organization
64Mx4
Row Address
A0~A12
Column Address
A0-A9, A11
A0-A9
32Mx8
A0~A12
DM is internally loaded to match DQ and DQS identically.
Row & Column address configuration
Rev. 1.3 April, 2005
DDR SDRAM 256Mb E-die (x4, x8)
DDR SDRAM
Package Physical Dimension
54pin sTSOP(II)-300
Units : Millimeters
(2-R 0.30)
(2-R 0.15)
#54
#28
(∅ 2.00 Dp0~0.05 BTM)
(1.00)
(14°)
#1
#27
+0.075
-0.035
0.125
14.40MAX
(14.20)
14.00±0.10
(14°)
0.10 MAX
+0.075
-0.035
0.25TYP
(0.50)
0.50TYP
0.20
0.50±0.05
(14°)
[
]
0.07 MAX
NOTE
1. (
0×~8×
) IS REFERENCE
2. [
] IS ASS’Y OUT QUALITY
Rev. 1.3 April, 2005
DDR SDRAM 256Mb E-die (x4, x8)
DDR SDRAM
Block Diagram (16Mbit x 4 / 8Mbit x 8 I/O x 4 Banks)
LWE
x4/8
LDM
CK, CK
Data Input Register
Serial to parallel
Bank Select
x8/16
8Mx8/ 4Mx16
8Mx8/ 4Mx16
8Mx8/ 4Mx16
8Mx8/ 4Mx16
x8/16
x4/8
x4/8
DQi
CK, CK
ADD
Column Decoder
Latency & Burst Length
Data Strobe
Programming Register
LWCBR
LCKE
LRAS LCBR
LWE
LCAS
CK, CK
LDM
Timing Register
CK, CK
CKE
CS
RAS
CAS
WE
DM
Rev. 1.3 April, 2005
DDR SDRAM 256Mb E-die (x4, x8)
DDR SDRAM
Input/Output Function Description
SYMBOL
TYPE
DESCRIPTION
Clock : CK and CK are differential clock inputs. All address and control input signals are sam-
pled on the positive edge of CK and negative edge of CK. Output (read) data is referenced to
both edges of CK. Internal clock signals are derived from CK/CK.
CK, CK
Input
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 synchronous for POWER-DOWN entry and exit, and for SELF
REFRESH entry. CKE is asynchronous for SELF REFRESH exit, and for output disable. CKE
must be maintained high throughput READ and WRITE accesses. Input buffers, excluding CK,
CK and CKE are disabled during POWER-DOWN. Input buffers, excluding CKE are disabled
during SELF REFRESH. CKE is an SSTL_2 input, but will detect an LVCMOS Low level after
Vdd is applied upon 1st power up, After VREF has become stable during the power on and ini-
CKE
Input
tialization sequence, it must be maintained for proper operation of the CKE receiver. For
proper SELF-REFRESH entry and exit, VREF must be maintained to this input.
Chip Select : CS enables(registered LOW) and disables(registered HIGH) the command
decoder. All commands are masked when CS is registered HIGH. CS provides for external
bank selection on systems with multiple banks. CS is considered part of the command code.
CS
Input
Input
RAS, CAS, WE
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 along with that input data during a WRITE access. DM is sampled on both
edges of DQS. Although DM pins are input only, the DM loading matches the DQ and DQS
loading.
DM
Input
Input
Bank Addres Inputs : BA0 and BA1 define to which bank an ACTIVE, READ, WRITE or PRE-
CHARGE command is being applied.
BA0, BA1
Address Inputs : Provide the row address for ACTIVE commands, and the column address and
AUTO PRECHARGE bit for READ/WRITE commands, to select one location out of the mem-
ory array in the respective bank. A10 is sampled during a PRECHARGE command to deter-
mine 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 BA0, BA1. The address inputs also
provide the op-code during a MODE REGISTER SET command. BA0 and BA1 define which
mode register is loaded during the MODE REGISTER SET command (MRS or EMRS).
A [0 : 12]
Input
DQ
I/O
I/O
Data Input/Output : Data bus
Data Strobe : Output with read data, input with write data. Edge-aligned with read data, cen-
tered in write data. Used to capture write data.
DQS
NC
-
No Connect : No internal electrical connection is present.
DQ Power Supply : +2.5V ± 0.2V.
DQ Ground.
VDDQ
VSSQ
VDD
Supply
Supply
Supply
Supply
Input
Power Supply : +2.5V ± 0.2V (device specific).
Ground.
VSS
VREF
SSTL_2 reference voltage.
Rev. 1.3 April, 2005
DDR SDRAM 256Mb E-die (x4, x8)
DDR SDRAM
Command Truth Table
(V=Valid, X=Don′t Care, H=Logic High, L=Logic Low)
A0 ~ A9,
A11,A12
COMMAND
CKEn-1 CKEn CS RAS CAS
WE BA0,1 A10/AP
Note
Register
Register
Extended MRS
H
H
X
X
H
L
L
L
L
L
L
L
L
L
OP CODE
1, 2
1, 2
Mode Register Set
Auto Refresh
OP CODE
3, 10
3, 10
3, 10
3, 10
H
L
L
L
H
X
Entry
Refresh
Self
Refresh
L
H
L
H
X
L
H
X
H
H
X
H
Exit
L
H
H
H
X
X
X
Bank Active & Row Addr.
V
V
Row Address
Read &
Column Address
Auto Precharge Disable
Auto Precharge Enable
Auto Precharge Disable
Auto Precharge Enable
L
H
L
4
4
Column
Address
L
H
L
H
Write &
Column Address
4
Column
Address
H
H
H
X
X
X
L
L
L
H
H
L
L
H
H
L
L
L
V
H
4, 6
7
Burst Stop
Precharge
X
Bank Selection
All Banks
V
X
L
X
H
5
H
L
X
V
X
X
H
X
V
X
V
X
X
H
X
V
X
V
X
X
H
X
V
Entry
Exit
H
L
L
H
L
Active Power Down
X
X
X
H
L
Entry
H
Precharge Power Down Mode
H
L
Exit
L
H
H
H
X
DM(UDM/LDM for x16 only)
X
X
X
8
9
9
H
L
X
H
X
H
X
H
No operation (NOP) : Not defined
Note :1. OP Code : Operand Code. A0 ~ A12 & BA0 ~ BA1 : Program keys. (@EMRS/MRS)
2. EMRS/MRS can be issued only at all banks precharge state.
A new command can be issued 2 clock cycles after EMRS or MRS.
3. Auto refresh functions are same as the CBR refresh of DRAM.
The automatical precharge without row precharge command is meant by "Auto".
Auto/self refresh can be issued only at all banks precharge state.
4. BA0 ~ BA1 : Bank select addresses.
If both BA0 and BA1 are "Low" at read, write, row active and precharge, bank A is selected.
If BA0 is "High" and BA1 is "Low" at read, write, row active and precharge, bank B is selected.
If BA0 is "Low" and BA1 is "High" at read, write, row active and precharge, bank C is selected.
If both BA0 and BA1 are "High" at read, write, row active and precharge, bank D is selected.
5. If A10/AP is "High" at row precharge, BA0 and BA1 are ignored and all banks are selected.
6. During burst write with auto precharge, new read/write command can not be issued.
Another bank read/write command can be issued after the end of burst.
New row active of the associated bank can be issued at tRP after the end of burst.
7. Burst stop command is valid at every burst length.
8. DM(x4/8) sampled at the rising and falling edges of the DQS and Data-in are masked at the both edges (Write DM latency is 0).
9. This combination is not defined for any function, which means "No Operation(NOP)" in DDR SDRAM.
10. VREF must be maintained during Self Refresh operation.
Rev. 1.3 April, 2005
DDR SDRAM 256Mb E-die (x4, x8)
DDR SDRAM
16M x 4Bit x 4 Banks / 8M x 8Bit x 4 Banks Double Data Rate SDRAM
General Description
The K4H560438E / K4H560838E is 268,435,456 bits of double data rate synchronous DRAM organized as 4x 16,777,216 / 4x
8,388,608 words by 4/ 8/ bits, fabricated with SAMSUNG′s high performance CMOS technology. Synchronous features with Data Strobe
allow extremely high performance up to 333Mb/s per pin. I/O transactions are possible on both edges of DQS. Range of operating fre-
quencies, programmable burst length and programmable latencies allow the device to be useful for a variety of high performance mem-
ory system applications.
Absolute Maximum Rating
Parameter
Symbol
Value
Unit
Voltage on any pin relative to VSS
VIN, VOUT
-0.5 ~ 3.6
V
Voltage on VDD & VDDQ supply relative to VSS
Storage temperature
VDD, VDDQ
TSTG
PD
-1.0 ~ 3.6
-55 ~ +150
1.5
V
°C
W
Power dissipation
Short circuit current
IOS
50
mA
Note : Permanent device damage may occur if ABSOLUTE MAXIMUM RATINGS are exceeded.
Functional operation should be restricted to recommend operation condition.
Exposure to higher than recommended voltage for extended periods of time could affect device reliability.
DC Operating Conditions
Recommended operating conditions(Voltage referenced to VSS=0V, TA=0 to 70°C)
Parameter
Symbol
Min
Max
2.7
Unit
Note
Supply voltage(for device with a nominal VDD of 2.5V)
VDD
2.3
I/O Supply voltage
VDDQ
VREF
VTT
2.3
2.7
V
V
I/O Reference voltage
I/O Termination voltage(system)
0.49*VDDQ
VREF-0.04
0.51*VDDQ
VREF+0.04
1
2
V
Input logic high voltage
VIH(DC)
VIL(DC)
VIN(DC)
VID(DC)
VI(Ratio)
II
VREF+0.15
-0.3
VDDQ+0.3
VREF-0.15
VDDQ+0.3
VDDQ+0.6
1.4
V
Input logic low voltage
V
Input Voltage Level, CK and CK inputs
Input Differential Voltage, CK and CK inputs
V-I Matching: Pullup to Pulldown Current Ratio
Input leakage current
-0.3
V
0.36
0.71
-2
V
3
4
-
2
uA
uA
mA
Output leakage current
IOZ
-5
5
Output High Current(Normal strengh driver) ;VOUT = VTT + 0.84V
IOH
-16.8
Output High Current(Normal strengh driver) ;VOUT = VTT - 0.84V
Output High Current(Half strengh driver) ;VOUT = VTT + 0.45V
Output High Current(Half strengh driver) ;VOUT = VTT - 0.45V
IOL
IOH
IOL
16.8
-9
mA
mA
mA
9
Note :
1.VREF is expected to be equal to 0.5*VDDQ of the transmitting device, and to track variations in the dc level of same.
Peak-to peak noise on VREF may not exceed +/-2% of the dc value.
2. VTT is not applied directly to the device. VTT is a system supply for signal termination resistors, is expected to be set equal to
VREF, and must track variations in the DC level of VREF
3. VID is the magnitude of the difference between the input level on CK and the input level on CK.
4. The ratio of the pullup current to the pulldown current is specified for the same temperature and voltage, over the entire
temperature and voltage range, for device drain to source voltages from 0.25V to 1.0V. For a given output, it represents the
maximum difference between pullup and pulldown drivers due to process variation. The full variation in the ratio of the
maximum to minimum pullup and pulldown current will not exceed 1/7 for device drain to source voltages from 0.1 to 1.0.
Rev. 1.3 April, 2005
DDR SDRAM 256Mb E-die (x4, x8)
DDR SDRAM
DDR SDRAM Spec Items & Test Conditions
Conditions
Symbol
IDD0
Operating current - One bank Active-Precharge;
tRC=tRCmin; tCK=10ns for DDR200, 7.5ns for DDR266, 6ns for DDR333;
DQ,DM and DQS inputs changing once per clock cycle;
address and control inputs changing once every two clock cycles.
Operating current - One bank operation ; One bank open, BL=4, Reads
- Refer to the following page for detailed test condition
IDD1
Percharge power-down standby current; All banks idle; power - down mode;
CKE = <VIL(max); tCK=10ns for DDR200,7.5ns for DDR266, 6ns for DDR333; Vin = Vref for DQ,DQS and DM.
IDD2P
Precharge Floating standby current; CS# > =VIH(min);All banks idle; CKE > = VIH(min); tCK=10ns for DDR200,
7.5ns for DDR266, 6ns for DDR333; Address and other control inputs changing once per clock cycle;
Vin = Vref for DQ,DQS and DM
IDD2F
Precharge Quiet standby current; CS# > = VIH(min); All banks idle;
CKE > = VIH(min); tCK=10ns for DDR200, 7.5ns for DDR266, 6ns for DDR333; Address and other control inputs
stable at >= VIH(min) or =<VIL(max); Vin = Vref for DQ ,DQS and DM
IDD2Q
IDD3P
Active power - down standby current ; one bank active; power-down mode;
CKE=< VIL (max); tCK=10ns for DDR200, 7.5ns for DDR266, 6ns for DDR333; Vin = Vref for DQ,DQS and DM
Active standby current; CS# >= VIH(min); CKE>=VIH(min);
one bank active; active - precharge; tRC=tRASmax; tCK=10ns for DDR200, 7.5ns for DDR266, 6ns for DDR333;
DQ, DQS and DM inputs changing twice per clock cycle; address and other control inputs changing once per clock
cycle
IDD3N
IDD4R
IDD4W
Operating current - burst read; Burst length = 2; reads; continguous burst; One bank active; address and control
inputs changing once per clock cycle; CL=2 at tCK=10ns for DDR200, CL=2 at 7.5ns for DDR266(A2), CL=2.5 at
7.5ns for DDR266(B0), 6ns for DDR333; 50% of data changing on every transfer; lout = 0 m A
Operating current - burst write; Burst length = 2; writes; continuous burst;
One bank active address and control inputs changing once per clock cycle; CL=2 at tCK= 10ns for DDR200, CL=2
at tCK=7.5ns for DDR266(A2), CL=2.5 at tCK=7.5ns for DDR266(B0), 6ns for DDR333; DQ, DM and DQS inputs
changing twice per clock cycle, 50% of input data changing at every burst
Auto refresh current; tRC = tRFC(min) - 8*tCK for DDR200 at tCK=10ns; 10*tCK for DDR266 at tCK=7.5ns;
12*tCK for DDR333 at tCK=6ns; distributed refresh
IDD5
IDD6
Self refresh current; CKE =< 0.2V; External clock on; tCK = 10ns for DDR200, tCK=7.5ns for DDR266, 6ns for
DDR333.
Orerating current - Four bank operation ; Four bank interleaving with BL=4
-Refer to the following page for detailed test condition
IDD7A
Input/Output Capacitance
(VDD=2.5, VDDQ=2.5V, TA= 25°C, f=100MHz)
Delta
0.5
Parameter
Symbol
Min
Max
Unit
Note
Input capacitance
CIN1
2
3
pF
4
(A0 ~ A12, BA0 ~ BA1, CKE, CS, RAS,CAS, WE)
Input capacitance( CK, CK )
CIN2
COUT
CIN3
2
4
4
3
5
5
0.25
pF
pF
pF
4
Data & DQS input/output capacitance
Input capacitance(DM for x4/8)
1,2,3,4
1,2,3,4
0.5
Note :
1.These values are guaranteed by design and are tested on a sample basis only.
2. Although DM is an input -only pin, the input capacitance of this pin must model the input capacitance of the DQ and DQS pins.
This is required to match signal propagation times of DQ, DQS, and DM in the system.
3. Unused pins are tied to ground.
4. This parameteer is sampled. VDDQ = +2.5V +0.2V, VDD = +3.3V +0.3V or +0.25V+0.2V, f=100MHz, tA=25°C, Vout(dc) =
VDDQ/2, Vout(peak to peak) = 0.2V. DM inputs are grouped with I/O pins - reflecting the fact that they are matched in loading
(to facilitate trace matching at the board level).
Rev. 1.3 April, 2005
DDR SDRAM 256Mb E-die (x4, x8)
DDR SDRAM
DDR SDRAM I spec table
(VDD=2.7V, T = 10°C)
DD
64Mx4 (K4H560438E)
Symbol
Unit
Notes
B3(DDR333@CL=2.5)
A2(DDR266@CL=2.0)
B0(DDR266@CL=2.5)
IDD0
IDD1
90
110
3
90
110
3
80
100
3
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
IDD2P
IDD2F
IDD2Q
IDD3P
IDD3N
IDD4R
IDD4W
IDD5
25
20
20
20
18
18
35
30
30
55
45
45
140
160
170
3
120
135
160
3
120
135
160
3
Normal
Low power
IDD7A
IDD6
1.5
260
1.5
260
1.5
240
Optional
32Mx8 (K4H560838E)
Symbol
Unit
Notes
B3(DDR333@CL=2.5)
A2(DDR266@CL=2.0)
B0(DDR266@CL=2.5)
IDD0
IDD1
90
115
3
90
115
3
80
105
3
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
IDD2P
IDD2F
IDD2Q
IDD3P
IDD3N
IDD4R
IDD4W
IDD5
25
20
20
20
18
18
35
30
30
55
45
45
160
160
170
3
140
135
160
3
140
135
160
3
Normal
Low power
IDD7A
IDD6
1.5
280
1.5
280
1.5
250
Optional
Rev. 1.3 April, 2005
DDR SDRAM 256Mb E-die (x4, x8)
DDR SDRAM
< Detailed test conditions for DDR SDRAM IDD1 & IDD7A >
IDD1 : Operating current: One bank operation
1. Only one bank is accessed with tRC(min), Burst Mode, Address and Control inputs on NOP edge are changing once
per clock cycle. lout = 0mA
2. Timing patterns
- B0(133Mhz, CL=2.5) : tCK = 7.5ns, CL=2.5, BL=4, tRCD = 3*tCK, tRC = 9*tCK, tRAS = 6*tCK
Read : A0 N N R0 N N P0 N N A0 N - repeat the same timing with random address changing
*50% of data changing at every burst
- A2 (133Mhz, CL=2) : tCK = 7.5ns, CL=2, BL=4, tRCD = 3*tCK, tRC = 9*tCK, tRAS = 6*tCK
Read : A0 N N R0 N N P0 N N A0 N - repeat the same timing with random address changing
*50% of data changing at every burst
- B3(166Mhz, CL=2.5) : tCK=6ns, CL=2.5, BL=4, tRCD=3*tCK, tRC = 10*tCK, tRAS=7*tCK
Read : A0 N N R0 N N P0 N N A0 N - repeat the same timing with random address changing
*50% of data changing at every burst
Legend : A=Activate, R=Read, W=Write, P=Precharge, N=NOP
IDD7A : Operating current: Four bank operation
1. Typical Case : Vdd = 2.5V, T=25’ C
2. Worst Case : Vdd = 2.7V, T= 10’ C
3. Four banks are being interleaved with tRC(min), Burst Mode, Address and Control inputs on NOP edge are not
changing. lout = 0mA
4. Timing patterns
- B0(133Mhz, CL=2.5) : tCK = 7.5ns, CL=2.5, BL=4, tRRD = 2*tCK, tRCD = 3*tCK, Read with autoprecharge
Read : A0 N A1 R0 A2 R1 A3 R2 N R3 A0 N A1 R0 - repeat the same timing with random address changing
*50% of data changing at every burst
- A2(133Mhz, CL=2) : tCK = 7.5ns, CL2=2, BL=4, tRRD = 2*tCK, tRCD = 3*tCK, Read with autoprecharge
Read : A0 N A1 R0 A2 R1 A3 R2 N R3 A0 N A1 R0 - repeat the same timing with random address changing
*50% of data changing at every burst
- B3(166Mhz,CL=2.5) : tCK=6ns, CL=2.5, BL=4, tRRD=2*tCK, tRCD=3*tCK, Read with autoprecharge
Read : A0 N A1 R0 A2 R1 A3 R2 N R3 A0 N A1 R0 - repeat the same timing with random address changing
*50% of data changing at every burst
Legend : A=Activate, R=Read, W=Write, P=Precharge, N=NOP
Rev. 1.3 April, 2005
DDR SDRAM 256Mb E-die (x4, x8)
DDR SDRAM
AC Operating Conditions
Parameter/Condition
Symbol
VIH(AC)
VIL(AC)
VID(AC)
Min
Max-10
Unit
V
Note
Input High (Logic 1) Voltage, DQ, DQS and DM signals
Input Low (Logic 0) Voltage, DQ, DQS and DM signals.
Input Differential Voltage, CK and /CK inputs
VREF + 0.31
VREF - 0.31
VDDQ+0.6
V
0.7
V
1
2
Input Crossing Point Voltage, CK and /CK inputs
VIX(AC) 0.5*VDDQ-0.2 0.5*VDDQ+0.2
V
Notes :
1. VID is the magnitude of the difference between the input level on CK and the input level on /CK.
2. The value of VIX is expected to equal 0.5*VDDQ of the transmitting device and must track variations in the dc level of the same.
AC Overshoot/Undershoot specification for Address and Control Pins
Parameter
Specification
DDR333
DDR200/266
1.5 V
Maximum peak amplitude allowed for overshoot
TBD
TBD
TBD
TBD
Maximum peak amplitude allowed for undershoot
1.5 V
The area between the overshoot signal and VDD must be less than or equal to
The area between the undershoot signal and GND must be less than or equal to
4.5 V-ns
4.5 V-ns
VDD
Overshoot
5
4
3
Maximum Amplitude = 1.5V
2
Area = 4.5V-ns
1
0
-1
-2
Maximum Amplitude = 1.5V
GND
-3
-4
-5
0
0.6875
0.5 1.0
1.5
2.5
3.5
4.5
5.5
6.3125
6.0 6.5
undershoot
7.0
2.0
3.0
4.0
5.0
Tims(ns)
AC overshoot/Undershoot Definition
Rev. 1.3 April, 2005
DDR SDRAM 256Mb E-die (x4, x8)
DDR SDRAM
Overshoot/Undershoot specification for Data, Strobe, and Mask Pins
Specification
Parameter
DDR333
DDR200/266
1.2 V
Maximum peak amplitude allowed for overshoot
TBD
TBD
TBD
TBD
Maximum peak amplitude allowed for undershoot
1.2 V
The area between the overshoot signal and VDD must be less than or equal to
The area between the undershoot signal and GND must be less than or equal to
2.4 V-ns
2.4 V-ns
VDDQ
Overshoot
5
Maximum Amplitude = 1.2V
4
3
2
Area = 2.4V-ns
1
0
-1
-2
Maximum Amplitude = 1.2V
GND
-3
-4
-5
0
0.5 1.0 1.42 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 5.68 6.0 6.5 7.0
Tims(ns)
undershoot
DQ/DM/DQS AC overshoot/Undershoot Definition
Rev. 1.3 April, 2005
DDR SDRAM 256Mb E-die (x4, x8)
DDR SDRAM
AC Timming Parameters & Specifications
B3
(DDR333@CL=2.5))
A2
B0
(DDR266@CL=2.5))
(DDR266@CL=2.0)
Parameter
Symbol
Unit
Note
Min
60
Max
Min
65
Max
Min
65
Max
Row cycle time
tRC
tRFC
tRAS
tRCD
tRP
ns
ns
Refresh row cycle time
Row active time
72
75
75
42
70K
45
70K
45
70K
ns
RAS to CAS delay
18
20
20
ns
Row precharge time
18
20
20
ns
Row active to Row active delay
Write recovery time
tRRD
tWR
12
15
15
ns
15
15
15
ns
Last data in to Read command
Col. address to Col. address delay
tWTR
tCCD
1
1
1
tCK
tCK
ns
1
1
1
CL=2.0
CL=2.5
7.5
6
12
7.5
7.5
0.45
0.45
-0.75
-0.75
-
12
12
10
12
12
Clock cycle time
tCK
12
7.5
0.45
0.45
-0.75
-0.75
-
ns
Clock high level width
tCH
tCL
0.45
0.45
-0.6
-0.7
-
0.55
0.55
+0.6
+0.7
0.45
1.1
0.55
0.55
+0.75
+0.75
0.5
0.55
0.55
+0.75
+0.75
0.5
tCK
tCK
ns
Clock low level width
DQS-out access time from CK/CK
Output data access time from CK/CK
Data strobe edge to ouput data edge
Read Preamble
tDQSCK
tAC
ns
tDQSQ
tRPRE
tRPST
tDQSS
tWPRES
tWPRE
tDSS
ns
12
3
0.9
0.4
0.75
0
0.9
0.4
0.75
0
1.1
0.9
0.4
0.75
0
1.1
tCK
tCK
tCK
ns
Read Postamble
0.6
0.6
0.6
CK to valid DQS-in
1.25
1.25
1.25
DQS-in setup time
DQS-in hold time
0.25
0.2
0.2
0.35
0.35
0.9
0.25
0.2
0.2
0.35
0.35
0.9
0.25
0.2
0.2
0.35
0.35
0.9
tCK
tCK
tCK
tCK
tCK
tCK
DQS falling edge to CK rising-setup time
DQS falling edge from CK rising-hold time
DQS-in high level width
tDSH
tDQSH
tDQSL
tDSC
DQS-in low level width
DQS-in cycle time
1.1
1.1
1.1
Address and Control Input setup time(fast)
tIS
i,5.7~
i,5.7~
0.75
0.75
0.9
0.9
0.9
0.9
ns
ns
Address and Control Input hold time(fast)
tIH
Address and Control Input setup time(slow)
Address and Control Input hold time(slow)
Data-out high impedence time from CK/CK
Data-out low impedence time from CK/CK
Input Slew Rate(for input only pins)
Input Slew Rate(for I/O pins)
tIS
tIH
0.8
0.8
1.0
1.0
1.0
1.0
ns
ns
i, 6~9
i, 6~9
1
tHZ
-0.7
-0.7
0.5
+0.7
+0.7
-0.75
-0.75
0.5
+0.75
+0.75
-0.75
-0.75
0.5
+0.75
+0.75
ns
tLZ
ns
1
tSL(I)
tSL(IO)
tSL(O)
tSLMR
V/ns
V/ns
V/ns
0.5
0.5
0.5
Output Slew Rate(x4,x8)
1.0
4.5
1.5
1.0
4.5
1.5
1.0
4.5
1.5
Output Slew Rate Matching Ratio(rise to fall)
0.67
0.67
0.67
Rev. 1.3 April, 2005
DDR SDRAM 256Mb E-die (x4, x8)
DDR SDRAM
B3
(DDR333@CL=2.5))
A2
B0
(DDR266@CL=2.5))
(DDR266@CL=2.0)
Parameter
Symbol
Unit
Note
Min
12
Max
Min
15
Max
Min
15
Max
Mode register set cycle time
DQ & DM setup time to DQS
DQ & DM hold time to DQS
tMRD
tDS
ns
ns
ns
0.45
0.5
0.5
j, k
j, k
tDH
0.45
0.5
0.5
Control & Address input pulse width
DQ & DM input pulse width
Power down exit time
tIPW
tDIPW
tPDEX
tXSNR
tXSRD
tREFI
2.2
1.75
6
2.2
1.75
7.5
2.2
1.75
7.5
ns
ns
8
8
ns
Exit self refresh to non-Read command
Exit self refresh to read command
Refresh interval time
75
75
75
ns
200
200
200
tCK
us
7.8
-
7.8
-
7.8
-
4
tHP
-tQHS
tHP
-tQHS
tHP
-tQHS
Output DQS valid window
Clock half period
tQH
tHP
ns
ns
11
tCLmin
or tCHmin
tCLmin
or tCHmin
tCLmin
or tCHmin
-
-
-
10, 11
Data hold skew factor
tQHS
0.55
0.6
0.75
0.6
0.75
0.6
ns
11
2
DQS write postamble time
tWPST
0.4
18
0.4
20
0.4
20
tCK
Active to Read with Auto precharge
command
tRAP
tDAL
Autoprecharge write recovery +
Precharge time
(tWR/tCK)
+
(tWR/tCK)
+
(tWR/tCK)
+
tCK
13
(tRP/tCK)
(tRP/tCK)
(tRP/tCK)
Rev. 1.3 April, 2005
DDR SDRAM 256Mb E-die (x4, x8)
DDR SDRAM
System Characteristics for DDR SDRAM
The following specification parameters are required in systems using DDR333, DDR266 & DDR200 devices to ensure
proper system performance. these characteristics are for system simulation purposes and are guaranteed by design.
Table 1 : Input Slew Rate for DQ, DQS, and DM
AC CHARACTERISTICS
DDR333
DDR266
DDR200
PARAMETER
SYMBOL
DCSLEW
MIN
TBD
MAX
TBD
MIN
TBD
MAX
TBD
MIN
0.5
MAX
4.0
Units
V/ns
Notes
a, m
DQ/DM/DQS input slew rate measured between
VIH(DC), VIL(DC) and VIL(DC), VIH(DC)
Table 2 : Input Setup & Hold Time Derating for Slew Rate
Input Slew Rate
0.5 V/ns
∆tIS
0
∆tIH
0
Units
ps
Notes
i
i
i
0.4 V/ns
+50
+100
0
ps
0.3 V/ns
0
ps
Table 3 : Input/Output Setup & Hold Time Derating for Slew Rate
Input Slew Rate
0.5 V/ns
∆tDS
0
∆tDH
0
Units
ps
Notes
k
k
k
0.4 V/ns
+75
+150
+75
+150
ps
0.3 V/ns
ps
Table 4 : Input/Output Setup & Hold Derating for Rise/Fall Delta Slew Rate
Delta Slew Rate
+/- 0.0 V/ns
∆tDS
0
∆tDH
0
Units
ps
Notes
j
j
j
+/- 0.25 V/ns
+/- 0.5 V/ns
+50
+100
+50
+100
ps
ps
Table 5 : Output Slew Rate Characteristice (X4, X8 Devices only)
Typical Range
(V/ns)
Minimum
(V/ns)
Maximum
(V/ns)
Slew Rate Characteristic
Notes
Pullup Slew Rate
Pulldown slew
1.2 ~ 2.5
1.2 ~ 2.5
1.0
1.0
4.5
4.5
a,c,d,f,g,h
b,c,d,f,g,h
Table 6 : Output Slew Rate Characteristice (X16 Devices only)
Typical Range
(V/ns)
Minimum
(V/ns)
Maximum
(V/ns)
Slew Rate Characteristic
Notes
Pullup Slew Rate
Pulldown slew
1.2 ~ 2.5
1.2 ~ 2.5
0.7
0.7
5.0
5.0
a,c,d,f,g,h
b,c,d,f,g,h
Table 7 : Output Slew Rate Matching Ratio Characteristics
AC CHARACTERISTICS DDR266B
DDR200
PARAMETER
Output Slew Rate Matching Ratio (Pullup to Pulldown)
MIN
TBD
MAX
TBD
MIN
0.67
MAX
1.5
Notes
e,m
Rev. 1.3 April, 2005
DDR SDRAM 256Mb E-die (x4, x8)
DDR SDRAM
Component Notes
1. All voltages referenced to Vss.
2. Tests for ac timing, IDD, and electrical, ac and dc characteristics, may be conducted at nominal reference/supply voltage levels,
but the related specifications and device operation are guaranteed for the full voltage range specified.
3. Figure 1 represents the timing reference load used in defining the relevant timing parameters of the part. It is not intended to be
either a precise representation of the typical system environment nor a depiction of the actual load presented by a production
tester. System designers will use IBIS or other simulation tools to correlate the timing reference load to a system environment.
Manufacturers will correlate to their production test conditions (generally a coaxial transmission line terminated at the tester elec-
tronics).
VDDQ
50Ω
Output
(Vout)
30pF
Figure 1 : Timing Reference Load
4. AC timing and IDD tests may use a VIL to VIH swing of up to 1.5 V in the test environment, but input timing is still referenced to
VREF (or to the crossing point for CK/CK), and parameter specifications are guaranteed for the specified ac input levels under nor-
mal use conditions. The minimum slew rate for the input signals is 1 V/ns in the range between VIL(ac) and VIH(ac).
5. The ac and dc input level specifications are as defined in the SSTL_2 Standard (i.e., the receiver will effectively switch as a result
of the signal crossing the ac input level and will remain in that state as long as the signal does not ring back above (below) the dc
input LOW (HIGH) level.
6. Inputs are not recognized as valid until VREF stabilizes. Exception: during the period before VREF stabilizes, CKE ≤ 0.2VDDQ is
recognized as LOW.
7. Enables on.chip refresh and address counters.
8. IDD specifications are tested after the device is properly initialized.
9. The CK/CK input reference level (for timing referenced to CK/CK) is the point at which CK and CK cross; the input reference level
for signals other than CK/CK, is VREF.
10. The output timing reference voltage level is VTT.
11. tHZ and tLZ transitions occur in the same access time windows as valid data transitions. These parameters are not referenced to
a specific voltage level but specify when the device output is no longer driving (HZ), or begins driving (LZ).
12. The maximum limit for this parameter is not a device limit. The device will operate with a greater value for this parameter, but sys
tem performance (bus turnaround) will degrade accordingly.
13. The specific requirement is that DQS be valid (HIGH, LOW, or at some point on a valid transition) on or before this CK edge. A
valid transition is defined as monotonic and meeting the input slew rate specifications of the device. when no writes were previ
ously in progress on the bus, DQS will be tran sitioning from High- Z to logic LOW. If a previous write was in progress, DQS could
be HIGH, LOW, or transitioning from HIGH to LOW at this time, depending on tDQSS.
14. A maximum of eight AUTO REFRESH commands can be posted to any given DDR SDRAM device.
15. For command/address input slew rate ≥ 1.0 V/ns
16. For command/address input slew rate ≥ 0.5 V/ns and < 1.0 V/ns
Rev. 1.3 April, 2005
DDR SDRAM 256Mb E-die (x4, x8)
DDR SDRAM
Component Notes
17. For CK & CK slew rate ≥ 1.0 V/ns
18. These parameters guarantee device timing, but they are not necessarily tested on each device. They may be guaranteed by
device design or tester correlation.
19. Slew Rate is measured between VOH(ac) and VOL(ac).
20. Min (tCL, tCH) refers to the smaller of the actual clock low time and the actual clock high time as provided to the device (i.e. this
value can be greater than the minimum specification limits for tCL and tCH).....For example, tCL and tCH are = 50% of the
period, less the half period jitter (tJIT(HP)) of the clock source, and less the half period jitter due to crosstalk (tJIT(crosstalk)) into
the clock traces.
21. tQH = tHP - tQHS, where:
tHP = minimum half clock period for any given cycle and is defined by clock high or clock low (tCH, tCL). tQHS accounts for 1) The
pulse duration distortion of on-chip clock circuits; and 2) The worst case push-out of DQS on one tansition followed by the worst
case pull-in of DQ on the next transition, both of which are, separately, due to data pin skew and output pattern effects, and p-
channel to n-channel variation of the output drivers.
22. tDQSQ
Consists of data pin skew and output pattern effects, and p-channel to n-channel variation of the output drivers for any given cycle.
23. tDAL = (tWR/tCK) + (tRP/tCK)
For each of the terms above, if not already an integer, round to the next highest integer. Example: For DDR266B at CL=2.5 and
tCK=7.5ns tDAL = (15 ns / 7.5 ns) + (20 ns/ 7.5ns) = (2) + (3)
tDAL = 5 clocks
Rev. 1.3 April, 2005
DDR SDRAM 256Mb E-die (x4, x8)
DDR SDRAM
System Notes :
a. Pullup slew rate is characteristized under the test conditions as shown in Figure 2.
Test point
Output
50Ω
VSSQ
Figure 2 : Pullup slew rate test load
b. Pulldown slew rate is measured under the test conditions shown in Figure 3.
VDDQ
50Ω
Output
Test point
Figure 3 : Pulldown slew rate test load
c. Pullup slew rate is measured between (VDDQ/2 - 320 mV +/- 250 mV)
Pulldown slew rate is measured between (VDDQ/2 + 320 mV +/- 250 mV)
Pullup and Pulldown slew rate conditions are to be met for any pattern of data, including all outputs switching and only one output
switching.
Example : For typical slew rate, DQ0 is switching
For minmum slew rate, all DQ bits are switching from either high to low, or low to high.
The remaining DQ bits remain the same as for previous state.
d. Evaluation conditions
Typical : 25 °C (T Ambient), VDDQ = 2.5V(for DDR266/333) and 2.6V(for DDR400), typical process
Minimum : 70 °C (T Ambient), VDDQ = 2.3V(for DDR266/333) and 2.5V(for DDR400), slow - slow process
Maximum : 0 °C (T Ambient), VDDQ = 2.7V(for DDR266/333) and 2.7V(for DDR400), fast - fast process
e. The ratio of pullup slew rate to pulldown slew rate is specified for the same temperature and voltage, over the entire temperature and
voltage range. For a given output, it represents the maximum difference between pullup and pulldown drivers due to process variation.
f. Verified under typical conditions for qualification purposes.
g. TSOPII package divices only.
h. Only intended for operation up to 266 Mbps per pin.
i. A derating factor will be used to increase tIS and tIH in the case where the input slew rate is below 0.5V/ns
as shown in Table 2. The Input slew rate is based on the lesser of the slew rates detemined by either VIH(AC) to VIL(AC) or
VIH(DC) to VIL(DC), similarly for rising transitions.
j. A derating factor will be used to increase tDS and tDH in the case where DQ, DM, and DQS slew rates differ, as shown in Tables 3 & 4.
Input slew rate is based on the larger of AC-AC delta rise, fall rate and DC-DC delta rise, Input slew rate is based on the lesser of the
slew rates determined by either VIH(AC) to VIL(AC) or VIH(DC) to VIL(DC), similarly for rising transitions.
The delta rise/fall rate is calculated as:
{1/(Slew Rate1)} - {1/(Slew Rate2)}
For example : If Slew Rate 1 is 0.5 V/ns and slew Rate 2 is 0.4 V/ns, then the delta rise, fall rate is - 0.5ns/V . Using the table given, this
would result in the need for an increase in tDS and tDH of 100 ps.
k. Table 3 is used to increase tDS and tDH in the case where the I/O slew rate is below 0.5 V/ns. The I/O slew rate is based on the lesser
on the lesser of the AC - AC slew rate and the DC- DC slew rate. The inut slew rate is based on the lesser of the slew rates deter
mined by either VIH(ac) to VIL(ac) or VIH(DC) to VIL(DC), and similarly for rising transitions.
m. DQS, DM, and DQ input slew rate is specified to prevent double clocking of data and preserve setup and hold times. Signal transi
tions through the DC region must be monotonic.
Rev. 1.3 April, 2005
DDR SDRAM 256Mb E-die (x4, x8)
DDR SDRAM
IBIS :I/V Characteristics for Input and Output Buffers
DDR SDRAM Output Driver V-I Characteristics
DDR SDRAM Output driver characteristics are defined for full and half strength operation as selected by the EMRS bit A1.
Figures 3 and 4 show the driver characteristics graphically, and tables 8 and 9 show the same data in tabular format suitable for input
into simulation tools. The driver characteristcs evaluation conditions are:
Typical
Minimum
Maximum
25×C
70×C
0×C
Vdd/Vddq = 2.5V, typical process
Vdd/Vddq = 2.3V, slow-slow process
Vdd/Vddq = 2.7V, fast-fast process
Output Driver Characteristic Curves Notes:
1. The full variation in driver current from minimum to maximum process, temperature and voltage will lie within the outer bounding lines
the of the V-I curve of Figure 3 and 4.
2. It is recommended that the "typical" IBIS V-I curve lie within the inner bounding lines of the V-I curves of Figure 3 and 4.
3. The full variation in the ratio of the "typical" IBIS pullup to "typical" IBIS pulldown current should be unity +/- 10%, for device drain to
source voltages from 0.1 to1.0. This specification is a design objective only. It is not guaranteed.
160
Maximum
140
120
Typical High
100
80
Typical Low
Minimum
60
40
20
0
0.0
0.5
1.0
1.5
2.0
2.5
Vout(V)
Pullup Characteristics for Full Strength Output Driver
0.0
1.0
2.0
0
-20
Minumum
-40
Typical Low
-60
-80
-100
-120
-140
-160
-180
-200
-220
Typical High
Maximum
Vout(V)
Pulldown Characteristics for Full Strength Output Driver
Figure 3. I/V characteristics for input/output buffers:Pull up(above) and pull down(below)
Rev. 1.3 April, 2005
DDR SDRAM 256Mb E-die (x4, x8)
DDR SDRAM
Pulldown Current (mA)
pullup Current (mA)
Voltage
(V)
Typical
Low
Typical
High
Typical
Low
Typical
High
Minimum
Maximum
Minimum
Maximum
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
1.9
2.0
2.1
2.2
2.3
2.4
2.5
2.6
2.7
6.0
6.8
13.5
20.1
26.6
33.0
39.1
44.2
49.8
55.2
60.3
65.2
69.9
74.2
78.4
82.3
85.9
89.1
92.2
95.3
97.2
99.1
100.9
101.9
102.8
103.8
104.6
105.4
4.6
9.6
-6.1
-7.6
-4.6
-10.0
-20.0
12.2
18.1
24.1
29.8
34.6
39.4
43.7
47.5
51.3
54.1
56.2
57.9
59.3
60.1
60.5
61.0
61.5
62.0
62.5
62.9
63.3
63.8
64.1
64.6
64.8
65.0
9.2
18.2
-12.2
-18.1
-24.0
-29.8
-34.3
-38.1
-41.1
-41.8
-46.0
-47.8
-49.2
-50.0
-50.5
-50.7
-51.0
-51.1
-51.3
-51.5
-51.6
-51.8
-52.0
-52.2
-52.3
-52.5
-52.7
-52.8
-14.5
-9.2
13.8
18.4
23.0
27.7
32.2
36.8
39.6
42.6
44.8
46.2
47.1
47.4
47.7
48.0
48.4
48.9
49.1
49.4
49.6
49.8
49.9
50.0
50.2
50.4
50.5
26.0
-21.2
-13.8
-18.4
-23.0
-27.7
-32.2
-36.0
-38.2
-38.7
-39.0
-39.2
-39.4
-39.6
-39.9
-40.1
-40.2
-40.3
-40.4
-40.5
-40.6
-40.7
-40.8
-40.9
-41.0
-41.1
-41.2
-29.8
33.9
-27.7
-38.8
41.8
-34.1
-46.8
49.4
-40.5
-54.4
56.8
-46.9
-61.8
63.2
-53.1
-69.5
69.9
-59.4
-77.3
76.3
-65.5
-85.2
82.5
-71.6
-93.0
88.3
-77.6
-100.6
-108.1
-115.5
-123.0
-130.4
-136.7
-144.2
-150.5
-156.9
-163.2
-169.6
-176.0
-181.3
-187.6
-192.9
-198.2
93.8
-83.6
99.1
-89.7
103.8
108.4
112.1
115.9
119.6
123.3
126.5
129.5
132.4
135.0
137.3
139.2
140.8
-95.5
-101.3
-107.1
-112.4
-118.7
-124.0
-129.3
-134.6
-139.9
-145.2
-150.5
-155.3
-160.1
Table 7. Full Strength Driver Characteristics
Rev. 1.3 April, 2005
DDR SDRAM 256Mb E-die (x4, x8)
DDR SDRAM
90
80
70
60
50
40
30
20
10
0
Maximum
Typical High
Typical Low
Minimum
0.0
1.0
2.0
Vout(V)
Pullup Characteristics for Weak Output Driver
0.0
1.0
2.0
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
Minumum
Typical Low
Typical High
Maximum
Vout(V)
Pulldown Characteristics for Weak Output Driver
Figure 4. I/V characteristics for input/output buffers:Pull up(above) and pull down(below)
Rev. 1.3 April, 2005
DDR SDRAM 256Mb E-die (x4, x8)
DDR SDRAM
Pulldown Current (mA)
pullup Current (mA)
Voltage
(V)
Typical
Low
Typical
High
Typical
Low
Typical
High
Minimum
Maximum
Minimum
Maximum
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
1.9
2.0
2.1
2.2
2.3
2.4
2.5
2.6
2.7
3.4
3.8
2.6
5.0
-3.5
-4.3
-2.6
-5.0
6.9
7.6
5.2
9.9
-6.9
-8.2
-5.2
-9.9
10.3
13.6
16.9
19.6
22.3
24.7
26.9
29.0
30.6
31.8
32.8
33.5
34.0
34.3
34.5
34.8
35.1
35.4
35.6
35.8
36.1
36.3
36.5
36.7
36.8
11.4
15.1
18.7
22.1
25.0
28.2
31.3
34.1
36.9
39.5
42.0
44.4
46.6
48.6
50.5
52.2
53.9
55.0
56.1
57.1
57.7
58.2
58.7
59.2
59.6
7.8
14.6
19.2
23.6
28.0
32.2
35.8
39.5
43.2
46.7
50.0
53.1
56.1
58.7
61.4
63.5
65.6
67.7
69.8
71.6
73.3
74.9
76.4
77.7
78.8
79.7
-10.3
-13.6
-16.9
-19.4
-21.5
-23.3
-24.8
-26.0
-27.1
-27.8
-28.3
-28.6
-28.7
-28.9
-28.9
-29.0
-29.2
-29.2
-29.3
-29.5
-29.5
-29.6
-29.7
-29.8
-29.9
-12.0
-15.7
-19.3
-22.9
-26.5
-30.1
-33.6
-37.1
-40.3
-43.1
-45.8
-48.4
-50.7
-52.9
-55.0
-56.8
-58.7
-60.0
-61.2
-62.4
-63.1
-63.8
-64.4
-65.1
-65.8
-7.8
-14.6
-19.2
-23.6
-28.0
-32.2
-35.8
-39.5
-43.2
-46.7
-50.0
-53.1
-56.1
-58.7
-61.4
-63.5
-65.6
-67.7
-69.8
-71.6
-73.3
-74.9
-76.4
-77.7
-78.8
-79.7
10.4
13.0
15.7
18.2
20.8
22.4
24.1
25.4
26.2
26.6
26.8
27.0
27.2
27.4
27.7
27.8
28.0
28.1
28.2
28.3
28.3
28.4
28.5
28.6
-10.4
-13.0
-15.7
-18.2
-20.4
-21.6
-21.9
-22.1
-22.2
-22.3
-22.4
-22.6
-22.7
-22.7
-22.8
-22.9
-22.9
-23.0
-23.0
-23.1
-23.2
-23.2
-23.3
-23.3
Table 8. Weak Driver Characteristics
Rev. 1.3 April, 2005
相关型号：
K4H560438E-NCAA
DDR DRAM, 64MX4, 0.75ns, CMOS, PDSO54, 0.300 X 0.551 INCH, 0.50 MM PITCH, STSOP2-54
SAMSUNG
K4H560438E-NCB00
DDR DRAM, 64MX4, 0.75ns, CMOS, PDSO54, 0.300 X 0.551 INCH, 0.50 MM PITCH, STSOP2-54
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K4H560438E-NCB30
DDR DRAM, 64MX4, 0.7ns, CMOS, PDSO54, 0.300 X 0.551 INCH, 0.50 MM PITCH, STSOP2-54
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