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KM641003A Datasheet(PDF) 2 Page - Samsung semiconductor

Part No. KM641003A
Description  256Kx4 High Speed Static RAM(5V Operating), Revolutionary Pin out Operated at Commercial and Industrial Temperature Range
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Maker  SAMSUNG [Samsung semiconductor]
Homepage  http://www.samsung.com/Products/Semiconductor
Logo SAMSUNG - Samsung semiconductor

KM641003A Datasheet(HTML) 2 Page - Samsung semiconductor

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KM641003A
CMOS SRAM
PRELIMINARY
Rev 4.0
- 2 -
February 1998
256K x 4 Bit (with OE)High-Speed CMOS Static RAM
GENERAL DESCRIPTION
FEATURES
• Fast Access Time 12, 15, 20ns(Max.)
• Low Power Dissipation
Standby (TTL)
: 25mA(Max.)
(CMOS) : 8mA(Max.)
Operating KM641003A - 12 : 150mA(Max.)
KM641003A - 15 : 145mA(Max.)
KM641003A - 20 : 140mA(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
KM641003AJ : 32-SOJ-400
The KM641003A is a 1,048,576-bit high-speed Static Random
Access Memory organized as 262,144 words by 4 bits. The
KM641003A 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 KM641003A is packaged
in a 400 mil 32-pin plastic SOJ.
PIN FUNCTION
Pin Name
Pin Function
A0 - A17
Address Inputs
WE
Write Enable
CS
Chip Select
OE
Output Enable
I/O1~I/O4
Data Inputs/Outputs
VCC
Power(+5.0V)
VSS
Ground
N.C
No Connection
PIN CONFIGURATION(Top View)
Clk Gen.
I/O1~I/O4
CS
WE
OE
FUNCTIONAL BLOCK DIAGRAM
Data
Cont.
Column Select
CLK
Gen.
Pre-Charge Circuit
Memory Array
512 Rows
512x4 Columns
I/O Circuit &
SOJ
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
A17
A16
A15
A14
A13
OE
I/O4
Vss
Vcc
I/O3
A12
A11
A10
A9
A8
N.C.
N.C.
A0
A1
A2
A3
CS
I/O1
Vcc
Vss
I/O2
WE
A4
A5
A6
A7
N.C.
A9
A10
A11
A12
A13
A14
A15
A16
A17
A0
A1
A2
A3
A4
A5
A6
A7
A8


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