K4S281632M-TL80T [SAMSUNG]
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| 型号： | K4S281632M-TL80T |
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K4S281632M
CMOS SDRAM
128Mbit SDRAM
2M x 16Bit x 4 Banks
Synchronous DRAM
LVTTL
Revision 0.0
Aug. 1999
Samsung Electronics reserves the right to change products or specification without notice.
Rev. 0.0 Aug. 1999
K4S281632M
CMOS SDRAM
2M x 16Bit x 4 Banks Synchronous DRAM
FEATURES
GENERAL DESCRIPTION
• JEDEC standard 3.3V power supply
• LVTTL compatible with multiplexed address
• Four banks operation
The K4S281632M is 134,217,728 bits synchronous high data
rate Dynamic RAM organized as 4 x 2,097,152 words by 16
bits, fabricated with SAMSUNG¢s high performance CMOS
technology. Synchronous design allows precise cycle control
with the use of system clock I/O transactions are possible on
every clock cycle. Range of operating frequencies, programma-
ble burst length and programmable latencies allow the same
device to be useful for a variety of high bandwidth, high perfor-
mance memory system applications.
• MRS cycle with address key programs
-. CAS latency (2 & 3)
-. Burst length (1, 2, 4, 8 & Full page)
-. Burst type (Sequential & Interleave)
• All inputs are sampled at the positive going edge of the system
clock.
• Burst read single-bit write operation
• DQM for masking
ORDERING INFORMATION
• Auto & self refresh
Part No.
Max Freq.
Inter- Package
• 64ms refresh period (4K cycle)
K4S281632M-TC/L80 125MHz(CL=3)
K4S281632M-TC/L1H 100MHz(CL=2)
K4S281632M-TC/L1L 100MHz(CL=3)
K4S281632M-TC/L10 66MHz(CL=2 &3)
54pin
LVTTL
TSOP(II)
FUNCTIONAL BLOCK DIAGRAM
LWE
Data Input Register
LDQM
Bank Select
2M x 16
2M x 16
2M x 16
2M x 16
DQi
CLK
ADD
Column Decoder
Latency & Burst Length
LCKE
Programming Register
LRAS
LCBR
LWE
LCAS
LWCBR
LDQM
Timing Register
CLK
CKE
CS
RAS
CAS
WE
LDQM
UDQM
* Samsung Electronics reserves the right to change products or specification without notice.
Rev. 0.0 Aug. 1999
K4S281632M
CMOS SDRAM
PIN CONFIGURATION (Top view)
VDD
DQ0
VDDQ
DQ1
DQ2
VSSQ
DQ3
DQ4
VDDQ
1
2
3
4
5
6
7
8
9
VSS
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
DQ15
VSSQ
DQ14
DQ13
VDDQ
DQ12
DQ11
VSSQ
DQ10
DQ9
VDDQ
DQ8
VSS
N.C/RFU
UDQM
CLK
CKE
N.C
A11
A9
DQ5 10
DQ6 11
VSSQ
12
DQ7 13
14
LDQM 15
WE 16
VDD
CAS 17
RAS 18
CS 19
BA0 20
BA1 21
A10/AP 22
A8
A7
A6
A5
A4
VSS
A0
A1
A2
A3
VDD
23
24
25
26
27
54Pin TSOP (II)
(400mil x 875mil)
(0.8 mm Pin pitch)
PIN FUNCTION DESCRIPTION
Pin
Name
System clock
Input Function
CLK
Active on the positive going edge to sample all inputs.
Disables or enables device operation by masking or enabling all inputs except
CLK, CKE and DQM
CS
Chip select
Masks system clock to freeze operation from the next clock cycle.
CKE should be enabled at least one cycle prior to new command.
Disable input buffers for power down in standby.
CKE
Clock enable
Row/column addresses are multiplexed on the same pins.
Row address : RA0 ~ RA11, Column address : CA0 ~ CA8
A0 ~ A11
BA0 ~ BA1
RAS
Address
Selects bank to be activated during row address latch time.
Selects bank for read/write during column address latch time.
Bank select address
Row address strobe
Column address strobe
Write enable
Latches row addresses on the positive going edge of the CLK with RAS low.
Enables row access & precharge.
Latches column addresses on the positive going edge of the CLK with CAS low.
Enables column access.
CAS
Enables write operation and row precharge.
Latches data in starting from CAS, WE active.
WE
Makes data output Hi-Z, tSHZ after the clock and masks the output.
Blocks data input when L(U)DQM active.
L(U)DQM
Data input/output mask
DQ0 ~ 15
VDD/VSS
Data input/output
Data inputs/outputs are multiplexed on the same pins.
Power and ground for the input buffers and the core logic.
Power supply/ground
Isolated power supply and ground for the output buffers to provide improved noise
immunity.
VDDQ/VSSQ
N.C/RFU
Data output power/ground
No connection
/reserved for future use
This pin is recommended to be left No Connection on the device.
Rev. 0.0 Aug. 1999
K4S281632M
CMOS SDRAM
ABSOLUTE MAXIMUM RATINGS
Parameter
Voltage on any pin relative to Vss
Voltage on VDD supply relative to Vss
Storage temperature
Symbol
VIN, VOUT
VDD, VDDQ
TSTG
Value
-1.0 ~ 4.6
-1.0 ~ 4.6
-55 ~ +150
1
Unit
V
V
°C
W
Power dissipation
PD
Short circuit current
IOS
50
mA
Note :
Permanent device damage may occur if "ABSOLUTE MAXIMUM RATINGS" are exceeded.
Functional operation should be restricted to recommended operating 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
Supply voltage
Symbol
VDD, VDDQ
VIH
Min
3.0
2.0
-0.3
2.4
-
Typ
Max
Unit
V
Note
3.3
3.6
Input logic high voltage
3.0
VDDQ+0.3
V
1
Input logic low voltage
VIL
0
-
0.8
-
V
2
IOH = -2mA
IOL = 2mA
3
Output logic high voltage
Output logic low voltage
Input leakage current (Inputs)
Input leakage current (I/O pins)
VOH
V
VOL
-
0.4
1
V
IIL
-1
-
uA
uA
IIL
-1.5
-
1.5
3,4
Notes :
1. VIH (max) = 5.6V AC.The overshoot voltage duration is £ 3ns.
2. VIL (min) = -2.0V AC. The undershoot voltage duration is £ 3ns.
3. Any input 0V £ VIN £ VDDQ,
Input leakage currents include Hi-Z output leakage for all bi-directional buffers with Tri-State outputs.
4. Dout is disabled, 0V £ VOUT £ VDDQ.
CAPACITANCE (VDD = 3.3V, TA = 23°C, f = 1MHz, VREF = 1.4V ± 200 mV)
Parameter
Symbol
CCLK
CIN
Min
2.5
2.5
2.5
4
Max
4
Unit
pF
Clock
RAS, CAS, WE, CS, CKE, DQM
Address
5
pF
CADD
COUT
5
pF
DQ0 ~ DQ3
6.5
pF
Rev. 0.0 Aug. 1999
K4S281632M
CMOS SDRAM
DC CHARACTERISTICS
(Recommended operating condition unless otherwise noted, TA = 0 to 70°C)
Version
CAS
Latency
Parameter
Symbol
Test Condition
Burst length = 1
tRC ³ tRC(min)
IOL = 0 mA
Unit
mA
mA
Note
-80 -1H -1L -10
Operating current
(One bank active)
ICC1
130 120 120 115
1
ICC2P
1
1
CKE £ VIL(max), tCC = 15ns
Precharge standby current in
power-down mode
ICC2PS
CKE & CLK £ VIL(max), tCC = ¥
CKE ³ VIH(min),CS ³ VIH(min),tCC=15ns
Input signals are changed one time during 30ns
ICC2N
15
7
Precharge standby current in
non power-down mode
mA
mA
CKE ³ VIH(min), CLK £ VIL(max), tCC = ¥
Input signals are stable
ICC2NS
ICC3P
5
5
CKE £ VIL(max), tCC = 15ns
Active standby current in
power-down mode
ICC3PS
CKE & CLK £ VIL(max), tCC = ¥
CKE ³ VIH(min), CS ³ VIH(min), tCC = 15ns
Input signals are changed one time during 30ns.
ICC3N
30
20
mA
mA
Active standby current in
non power-down mode
(One bank active)
CKE ³ VIH(min), CLK £ VIL(max), tCC = ¥
Input signals are stable
ICC3NS
IOL = 0 mA
Page burst
tCCD = 2CLKs
3
2
170 145 145 145
135 145 135 135
Operating current
(Burst mode)
ICC4
mA
1
Refresh current
ICC5
ICC6
tRC ³ tRC(min)
CKE £ 0.2V
200
1.5
800
165
mA
mA
uA
2
3
4
C
Self refresh current
L
Notes :
1. Measured with outputs open.
2. Refresh period is 64ms.
3. K4S281632M-TC**
4. K4S281632M-TL**
Rev. 0.0 Aug. 1999
K4S281632M
CMOS SDRAM
AC OPERATING TEST CONDITIONS (VDD = 3.3V ± 0.3V, TA = 0 to 70°C)
Parameter
AC input levels (Vih/Vil)
Value
2.4/0.4
1.4
Unit
V
Input timing measurement reference level
Input rise and fall time
V
tr/tf = 1/1
1.4
ns
V
Output timing measurement reference level
Output load condition
See Fig. 2
3.3V
Vtt = 1.4V
1200W
50W
VOH (DC) = 2.4V, IOH = -2mA
VOL (DC) = 0.4V, IOL = 2mA
Output
Output
Z0 = 50W
50pF
50pF
870W
(Fig. 1) DC output load circuit
(Fig. 2) AC output load circuit
OPERATING AC PARAMETER
(AC operating conditions unless otherwise noted)
Version
Parameter
Symbol
Unit
Note
-80
16
20
20
48
-1H
20
20
20
50
-1L
20
20
20
50
-10
20
24
24
50
Row active to row active delay
RAS to CAS delay
tRRD(min)
tRCD(min)
tRP(min)
ns
ns
1
1
1
1
Row precharge time
ns
tRAS(min)
tRAS(max)
tRC(min)
ns
Row active time
100
us
Row cycle time
68
8
70
10
70
10
80
12
ns
1
2
2
2
3
Last data in to row precharge
Last data in to new col. address delay
Last data in to burst stop
tRDL(min)
tCDL(min)
tBDL(min)
tCCD(min)
ns
1
1
1
2
1
CLK
CLK
CLK
Col. address to col. address delay
CAS latency=3
CAS latency=2
Number of valid output data
ea
4
Notes :
1. The minimum number of clock cycles is determined by dividing the minimum time required with clock cycle time
and then rounding off to the next higher integer.
2. Minimum delay is required to complete write.
3. All parts allow every cycle column address change.
4. In case of row precharge interrupt, auto precharge and read burst stop.
Rev. 0.0 Aug. 1999
K4S281632M
CMOS SDRAM
AC CHARACTERISTICS (AC operating conditions unless otherwise noted)
-80
-1H
-1L
-10
Parameter
Symbol
tCC
Unit Note
Min
8
Max
Min
10
Max
Min
10
Max
Min
Max
CAS latency=3
10
13
CLK cycle time
1000
1000
1000
1000
ns
ns
ns
1
1,2
2
CAS latency=2
CAS latency=3
CAS latency=2
CAS latency=3
CAS latency=2
12
10
12
6
6
6
6
6
7
7
7
CLK to valid
output delay
tSAC
3
3
3
3
2
1
1
3
3
3
3
2
1
1
3
3
3
3
2
1
1
3
Output data
hold time
tOH
3
CLK high pulse width
CLK low pulse width
Input setup time
tCH
tCL
3.5
3.5
2.5
1.5
1
ns
ns
ns
ns
ns
3
3
3
3
2
tSS
tSH
tSLZ
Input hold time
CLK to output in Low-Z
CAS latency=3
CAS latency=2
6
6
6
6
6
7
7
7
CLK to output
in Hi-Z
tSHZ
ns
Notes :
1. Parameters depend on programmed CAS latency.
2. If clock rising time is longer than 1ns, (tr/2-0.5)ns should be added to the parameter.
3. Assumed input rise and fall time (tr & tf) = 1ns.
If tr & tf is longer than 1ns, transient time compensation should be considered,
i.e., [(tr + tf)/2-1]ns should be added to the parameter.
DQ BUFFER OUTPUT DRIVE CHARACTERISTICS
Parameter
Symbol
Condition
Min
Typ
Max
Unit
Notes
Measure in linear
region : 1.2V ~ 1.8V
Output rise time
trh
1.37
4.37
3.8
5.6
5.0
Volts/ns
Volts/ns
Volts/ns
Volts/ns
3
3
Measure in linear
region : 1.2V ~ 1.8V
Output fall time
Output rise time
Output fall time
tfh
trh
tfh
1.30
2.8
Measure in linear
region : 1.2V ~ 1.8V
3.9
2.9
1,2
1,2
Measure in linear
region : 1.2V ~ 1.8V
2.0
Notes :
1. Rise time specification based on 0pF + 50 W to VSS, use these values to design to.
2. Fall time specification based on 0pF + 50 W to VDD, use these values to design to.
3. Measured into 50pF only, use these values to characterize to.
4. All measurements done with respect to VSS.
Rev. 0.0 Aug. 1999
K4S281632M
CMOS SDRAM
66MHz and 100MHz Pull-up
1.5 2.5
IBIS SPECIFICATION
0
0.5
1
2
3
3.5
IOH Cha.racteristics (Pull-up)
0
-100
-200
-300
-400
-500
-600
100MHz
Min
I (mA)
100MHz
Max
I (mA)
-2.4
-27.3
66MHz
Min
I (mA)
Voltage
(V)
3.45
3.3
3.0
2.6
2.4
2.0
1.8
1.65
1.5
1.4
1.0
0.0
0.0
-21.1
-34.1
-58.7
-67.3
-73.0
-77.9
-80.8
-88.6
-93.0
-74.1
-0.7
-7.5
-129.2
-153.3
-197.0
-226.2
-248.0
-269.7
-284.3
-344.5
-502.4
-13.3
-27.5
-35.5
-41.1
-47.9
-52.4
-72.5
-93.0
Voltage
IOH Min (100MHz)
IOH Min (66MHz)
IOH Max (66 and 100MHz)
66MHz and 100MHz Pull-down
IOL Characteristics (Pull-down)
250
200
150
100
50
100MHz
Min
100MHz
Max
66MHz
Min
I (mA)
0.0
Voltage
(V)
0.0
I (mA)
0.0
I (mA)
0.0
0.4
27.5
41.8
51.6
58.0
70.7
72.9
75.4
77.0
77.6
80.3
81.4
70.2
17.7
26.9
33.3
37.6
46.6
48.0
49.5
50.7
51.5
54.2
54.9
0.65
0.85
1.0
1.4
1.5
1.65
1.8
1.95
3.0
107.5
133.8
151.2
187.7
194.4
202.5
208.6
212.0
219.6
222.6
3.45
0
0
0.5
1
1.5
2
2.5
3
3.5
Voltage
IOL Min (100MHz)
IOL Min (66MHz)
IOL Max (100MHz)
Rev. 0.0 Aug. 1999
K4S281632M
CMOS SDRAM
Minimum VDD clamp current
(Referenced to VDD)
VDD Clamp @ CLK, CKE, CS, DQM & DQ
VDD (V)
0.0
0.2
0.4
0.6
0.7
0.8
0.9
1.0
1.2
1.4
1.6
1.8
2.0
2.2
2.4
2.6
I (mA)
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.23
1.34
3.02
5.06
7.35
9.83
12.48
15.30
18.31
20
15
10
5
0
0
1
2
3
Voltage
I (mA)
Minimum VSS clamp current
-2 -1
VSS Clamp @ CLK, CKE, CS, DQM & DQ
-3
0
VSS (V)
-2.6
-2.4
-2.2
-2.0
-1.8
-1.6
-1.4
-1.2
-1.0
-0.9
-0.8
-0.7
-0.6
-0.4
-0.2
0.0
I (mA)
-57.23
-45.77
-38.26
-31.22
-24.58
-18.37
-12.56
-7.57
-3.37
-1.75
-0.58
-0.05
0.0
0
-10
-20
-30
-40
-50
-60
0.0
0.0
0.0
Voltage
I (mA)
Rev. 0.0 Aug. 1999
K4S281632M
CMOS SDRAM
SIMPLIFIED TRUTH TABLE
A11,
A9 ~ A0
CKEn-1
CKEn
CS
RAS
CAS
WE
DQM BA0,1
A10/AP
Note
Command
Register
Refresh
Mode register set
Auto refresh
H
X
H
L
L
L
L
L
X
OP code
1,2
3
H
L
L
L
L
H
X
X
X
X
Entry
3
Self
L
H
L
H
X
L
H
X
H
H
X
H
3
fefresh
Exit
H
3
Bank active & row addr.
H
H
X
X
X
X
V
V
Row address
Column
address
(A0 ~ A8)
Read &
column address
Auto precharge disable
Auto precharge enable
Auto precharge disable
Auto precharge enable
L
H
L
4
4,5
4
L
L
H
H
L
L
H
L
Column
address
(A0 ~ A8)
Write &
column address
H
X
X
V
H
X
L
4,5
6
Burst stop
Precharge
H
H
X
X
L
L
H
L
H
H
L
L
X
X
Bank selection
All banks
V
X
X
H
H
L
X
V
X
X
H
X
V
X
X
H
X
V
X
X
H
X
V
X
V
X
X
H
X
V
Entry
H
L
X
Clock suspend or
active power down
X
X
Exit
L
H
L
X
H
L
X
X
Entry
H
Precharge power down mode
H
L
Exit
L
H
X
X
DQM
H
H
V
X
X
X
7
H
L
X
H
X
H
No operation command
Notes : 1. OP Code : Operand code
A0 ~ A11 & BA0 ~ BA1 : Program keys. (@ MRS)
2. MRS can be issued only at all banks precharge state.
A new command can be issued after 2 CLK cycles of MRS.
3. Auto refresh functions are as same as 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 both BA0 is "Low" and BA1 is "High" at read, write, row active and precharge, bank B is selected.
If both BA0 is "High" and BA1 is "Low" 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.
If A10/AP is "High" at row precharge, BA0 and BA1 is ignored and all banks are selected.
5. During burst read or 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.
6. Burst stop command is valid at every burst length.
7. DQM sampled at positive going edge of a CLK and masks the data-in at the very CLK (Write DQM latency is 0),
but makes Hi-Z state the data-out of 2 CLK cycles after. (Read DQM latency is 2)
Rev. 0.0 Aug. 1999
相关型号：
K4S281632O-LC750
Synchronous DRAM, 8MX16, 5.4ns, CMOS, PDSO54, 0.400 X 0.875 INCH, 0.80 MM PITCH, HALOGEN FREE AND ROHS COMPLIANT, TSOP2-54
SAMSUNG
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