km681002a Samsung Semiconductor, Inc., km681002a Datasheet - Page 2

• Manufacturer Part Number: km681002a
• Description: 128kx8 High Speed Static Ram5v Operating, Revolutionary Pin Out. Operated At Commercial And Industrial Temperature Range.
• Manufacturer: Samsung Semiconductor, Inc.

FEATURES
• Fast Access Time 12, 15, 20ns(Max.)
• Low Power Dissipation
• Single 5.0V 10% Power Supply
• TTL Compatible Inputs and Outputs
• I/O Compatible with 3.3V Device
• Fully Static Operation
• Three State Outputs
• Center Power/Ground Pin Configuration
• Standard Pin Configuration
FUNCTIONAL BLOCK DIAGRAM
KM681002A, KM681002AI
128K x 8 Bit High-Speed CMOS Static RAM
A
A
A
A
A
A
A
A
A
CS
WE
OE
0
1
2
3
4
5
6
7
8
Operating KM681002A - 12 : 170mA(Max.)
- No Clock or Refresh required
I/O
Standby (TTL)
1
~I/O
8
(CMOS) : 8mA(Max.)
KM681002A - 15 : 165mA(Max.)
KM681002A - 20 : 160mA(Max.)
KM681002AJ : 32-SOJ-400
KM681002AT: 32-TSOP2-400F
Clk Gen.
: 25mA(Max.)
Cont.
Gen.
Data
CLK
A
9
A
10
Pre-Charge Circuit
256x8 Columns
Column Select
A
Memory Array
11
512 Rows
I/O Circuit
A
12
A
13
A
14
A
15
A
16
- 2 -
GENERAL DESCRIPTION
ORDERING INFORMATION
The KM681002A is a 1,048,576-bit high-speed Static Random
Access Memory organized as 131,072 words by 8 bits. The
KM681002A uses 8 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 KM681002A is packaged
in a 400mil 32-pin plastic SOJ or TSOP2 forward.
PIN CONFIGURATION
PIN FUNCTION
KM681002A -12/15/20
KM681002AI -12/15/20
Pin Name
I/O
A
0
1
V
WE
V
OE
CS
- A
~ I/O
CC
SS
I/O
I/O
I/O
I/O
Vcc
Vss
WE
CS
A
A
A
A
A
A
A
A
0
1
2
3
4
5
6
7
16
1
2
3
4
8
10
11
12
13
14
15
16
1
2
3
4
5
6
7
8
9
Address Inputs
Write Enable
Chip Select
Output Enable
Data Inputs/Outputs
Power(+5.0V)
Ground
TSOP2
SOJ/
(Top View)
Pin Function
Commercial Temp.
Industrial Temp.
CMOS SRAM
PRELIMINARY
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
Ferruary 1998
I/O
I/O
I/O
I/O
A
A
A
A
Vss
Vcc
A
A
A
OE
A
A
16
15
14
13
12
11
10
9
8
8
7
6
5
Rev 4.0