1Mx4 Bit (with OE) High Speed Static RAM(5V Operating),
Operated at Commercial and Industrial Temperature Range.
PRELIMINARY
CMOS SRAM
Revision History
Rev No.
Rev. 0.0
Rev.1.0
History
Initial release with Design Target.
Release to Preliminary Data Sheet.
1. Replace Design Target to Preliminary.
Release to Final Data Sheet
1. Delete Preliminary
2. Add 30pF capacitive in test load
3. Relex DC characteristics
Item
I
CC
10ns
12ns
15ns
I
SB
f=max.
Draft Data
Jan. 1st 1997
Jun. 1st 1997
Remark
Design Target
Preliminary
Rev. 2.0
Feb. 11th 1998
Final
Previous
190mA
180mA
170mA
40mA
Current
195mA
190mA
185mA
50mA
Jun. 27th 1998
Final
Rev.2.1
Change operating current at Industrial Temperature range.
Previous spec.
Changed spec.
Items
(10/12/15ns part)
(10/12/15ns part)
I
CC
195/190/185mA
220/215/210mA
The attached data sheets are prepared and approved by SAMSUNG Electronics. SAMSUNG Electronics CO., LTD. reserve the right to change the
specifications. SAMSUNG Electronics will evaluate and reply to your requests and questions on the parameters of this device. If you have any ques-
tions, please contact the SAMSUNG branch office near your office, call or contact Headquarters.
-1-
Rev 2.1
June 1998
KM644002B, KM644002BI
1M x 4 Bit (with OE)High-Speed CMOS Static RAM
FEATURES
• Fast Access Time 10,12,15ns(Max.)
• Low Power Dissipation
Standby (TTL)
: 50mA(Max.)
(CMOS) : 10mA(Max.)
Operating KM644002B - 10 : 195mA(Max.)
KM644002B - 12 : 190mA(Max.)
KM644002B - 15 : 185mA(Max.)
• Single 5.0V±10% Power Supply
• TTL Compatible Inputs and Outputs
• I/O Compatible with 3.3V Device
• Fully Static Operation
- No Clock or Refresh required
• Three State Outputs
• Center Power/Ground Pin Configuration
• Standard Pin Configuration
KM644002BJ : 32-SOJ-400
KM644002BT : 32-TSOP2-400F
PRELIMINARY
CMOS SRAM
GENERAL DESCRIPTION
The KM644002B is a 4,194,304-bit high-speed Static Random
Access Memory organized as 1,048,576 words by 4 bits. The
KM644002B uses 4 common input and output lines and has an
output enable pin which operates faster than address access
time at read cycle. The device is fabricated using SAMSUNG′s
advanced CMOS process and designed for high-speed circuit
technology. It is particularly well suited for use in high-density
high-speed system applications. The KM644002B is packaged
in a 400 mil 32-pin plastic SOJ or TSOP(II) forward.
PIN CONFIGURATION
(Top View)
A
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
32
31
30
29
28
27
A
19
A
18
A
17
A
16
A
15
OE
ORDERING INFORMATION
KM644002B -10/12/15
KM644002BI -10/12/15
Commercial Temp.
Industrial Temp.
A
1
A
2
A
3
A
4
CS
I/O
1
26 I/O
4
FUNCTIONAL BLOCK DIAGRAM
Clk Gen.
A
0
A
1
A
3
A
4
A
5
A
6
A
7
A
8
A
2
Vcc
Vss
SOJ/
TSOP2
25
24
Vss
Vcc
Pre-Charge Circuit
I/O
2
WE
A
5
A
6
23 I/O
3
22
21
20
19
18
A
14
A
13
A
12
A
11
A
10
Row Select
A
7
Memory Array
512 Rows
2048x4 Columns
A
8
A
9
17 N.C
I/O
1
~I/O
4
Data
Cont.
CLK
Gen.
A
9
I/O Circuit &
Column Select
PIN FUNCTION
Pin Name
A
0
- A
19
WE
Pin Function
Address Inputs
Write Enable
Chip Select
Output Enable
Data Inputs/Outputs
Power(+5.0V)
Ground
No Connection
A
10
A
12
A
14
A
16
A
18
A
11
A
13
A
15
A
17
A
19
CS
OE
I/O
1
~ I/O
4
CS
WE
OE
V
CC
V
SS
N.C
-2-
Rev 2.1
June 1998
KM644002B, KM644002BI
ABSOLUTE MAXIMUM RATINGS*
Parameter
Voltage on Any Pin Relative to V
SS
Voltage on V
CC
Supply Relative to V
SS
Power Dissipation
Storage Temperature
Operating Temperature
Commercial
Industrial
Symbol
V
IN
, V
OUT
V
CC
P
D
T
STG
T
A
T
A
Rating
-0.5 to 7.0
-0.5 to 7.0
1.0
-65 to 150
0 to 70
-40 to 85
PRELIMINARY
CMOS SRAM
Unit
V
V
W
°C
°C
°C
*
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 operating sections of this specification is not implied.
Exposure to absolute maximum rating conditions for extended periods may affect reliability.
RECOMMENDED DC OPERATING CONDITIONS
(T
A
=0 to 70°C)
Parameter
Supply Voltage
Ground
Input High Voltage
Input Low Voltage
Symbol
V
CC
V
SS
V
IH
V
IL
Min
4.5
0
2.2
-0.5*
Typ
5.0
0
-
-
Max
5.5
0
V
CC
+0.5**
0.8
Unit
V
V
V
V
NOTE: The above parameters are also guaranteed at industrial temperature range.
*
V
IL
(Min) = -2.0V a.c(Pulse Width
≤
8ns) for I
≤
20mA
**
V
IH
(Max) = V
CC
+ 2.0V a.c (Pulse Width
≤
8ns) for I
≤
20mA
DC AND OPERATING CHARACTERISTICS
(
T
A
=0 to 70°C, Vcc=5.0V±10%, unless otherwise specified)
Parameter
Input Leakage Current
Output Leakage Current
Operating Current
Symbol
I
LI
I
LO
I
CC
V
IN
=V
SS
to V
CC
CS=V
IH
or OE=V
IH
or WE=V
IL
V
OUT
=V
SS
to V
CC
Min. Cycle, 100% Duty
CS=V
IL,
V
IN
=V
IH
or V
IL,
I
OUT
=0mA
Com.
10ns
12ns
15ns
Ind.
10ns
12ns
15ns
Standby Current
I
SB
I
SB1
Output Low Voltage Level
Output High Voltage Level
V
OL
V
OH
V
OH1*
Min. Cycle, CS=V
IH
f=0MHz, CS≥V
CC
-0.2V,
V
IN
≥V
CC
-0.2V or V
IN
≤0.2V
I
OL
=8mA
I
OH
=-4mA
I
OH1
=-0.1mA
Test Conditions
Min
-2
-2
-
-
-
-
-
-
-
-
-
2.4
-
Max
2
2
195
190
185
220
215
210
50
10
0.4
-
3.95
mA
mA
V
V
V
Unit
µA
µA
mA
NOTE: The above parameters are also guaranteed at industrial temperature range.
* V
CC
=5.0V, Temp.=25°C
CAPACITANCE*
(T
A
=25°C, f=1.0MHz)
Item
Input/Output Capacitance
Input Capacitance
* NOTE : Capacitance is sampled and not 100% tested.
Symbol
C
I/O
C
IN
Test Conditions
V
I/O
=0V
V
IN
=0V
MIN
-
-
Max
8
7
Unit
pF
pF
-3-
Rev 2.1
June 1998
KM644002B, KM644002BI
AC CHARACTERISTICS
(T
A
=0 to 70°C, V
CC
=5.0V±10%, unless otherwise noted.)
TEST CONDITIONS
Parameter
Input Pulse Levels
Input Rise and Fall Times
Input and Output timing Reference Levels
Output Loads
NOTE: The above test conditions are also applied at industrial temperature range.
PRELIMINARY
CMOS SRAM
Value
0V to 3V
3ns
1.5V
See below
Output Loads(A)
Output Loads(B)
for t
HZ
, t
LZ
, t
WHZ
, t
OW
, t
OLZ
& t
OHZ
+5.0V
R
L
= 50Ω
D
OUT
V
L
= 1.5V
Z
O
= 50Ω
30pF*
480Ω
D
OUT
255Ω
5pF*
* Capacitive Load consists of all components of the
test environment.
* Including Scope and Jig Capacitance
READ CYCLE
Parameter
Read Cycle Time
Address Access Time
Chip Select to Output
Output Enable to Valid Output
Chip Enable to Low-Z Output
Output Enable to Low-Z Output
Chip Disable to High-Z Output
Output Disable to High-Z Output
Output Hold from Address Change
Chip Selection to Power Up Time
Chip Selection to Power DownTime
Symbol
t
RC
t
AA
t
CO
t
OE
t
LZ
t
OLZ
t
HZ
t
OHZ
t
OH
t
PU
t
PD
KM644002B-10
Min
10
-
-
-
3
0
0
0
3
0
-
Max
-
10
10
5
-
-
5
5
-
-
10
KM644002B-12
Min
12
-
-
-
3
0
0
0
3
0
-
Max
-
12
12
6
-
-
6
6
-
-
12
KM644002B-15
Min
15
-
-
-
3
0
0
0
3
0
-
Max
-
15
15
7
-
-
7
7
-
-
15
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
NOTE: The above parameters are also guaranteed at industrial temperature range.
-4-
Rev 2.1
June 1998
KM644002B, KM644002BI
WRITE CYCLE
Parameter
Write Cycle Time
Chip Select to End of Write
Address Set-up Time
Address Valid to End of Write
Write Pulse Width(OE High)
Write Pulse Width(OE Low)
Write Recovery Time
Write to Output High-Z
Data to Write Time Overlap
Data Hold from Write Time
End Write to Output Low-Z
Symbol
t
WC
t
CW
t
AS
t
AW
t
WP
t
WP1
t
WR
t
WHZ
t
DW
t
DH
t
OW
KM644002B-10
Min
10
7
0
7
7
10
0
0
5
0
3
Max
-
-
-
-
-
-
-
5
-
-
-
KM644002B-12
Min
12
8
0
8
8
12
0
0
6
0
3
Max
-
-
-
-
-
-
-
6
-
-
-
PRELIMINARY
CMOS SRAM
KM644002B-15
Min
15
10
0
10
10
15
0
0
7
0
3
Max
-
-
-
-
-
-
-
7
-
-
-
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
NOTE: The above parameters are also guaranteed at industrial temperature range.
stm32/stm8
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