64K x 24 SRAM MODULE
SYS2464ZKX-12/15/20/25/35
Elm Road, West Chirton Industrial Estate, North Shields,
NE29 8SE, ENGLAND. TEL +44 191 2930500. FAX +44 191
2590997
Issue 1.0 : June 1996
Features
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Access Times of 12/15/20/25/35 ns.
56 Pin ZIP package.
Operating Power (24 bit mode)
Standby Power
(CMOS) -L
5 Volt Supply ± 10%.
Completely Static Operation.
Equal Access and Cycle Times.
All Inputs and Outputs Directly TTL Compatible.
On-board Supply Decoupling Capacitors.
Data Retention Capability (-L version only).
5.3 W Max.
1.0 W Max.
Description
The SYS2464 is a 1,572,864 bit Static RAM
organised as 64K x 24 with access time of 12, 15,
20, 25 and 35ns. The module consists of six 64Kx4
SOJ SRAM's, surface mounted on both sides of an
FR4 Epoxy substrate. This offers an extremely high
packing density.
The device has equal access and cycle times, is
directly TTL compatible, and is offered in standard
and low power versions. The -L version has data
retention capability and can be used in battery
backup applications.
Block Diagram
Pin Definition
VCC
D1
D3
D5
D7
GND
A1
A3
A5
A7
NC
GND
D9
D11
D13
D15
NC
OE
A9
A11
A13
A15
GND
D17
D19
D21
D23
VCC
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
36
38
40
42
44
46
48
50
52
54
56
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
33
35
37
39
41
43
45
47
49
51
53
55
VCC
D0
D2
D4
D6
GND
A0
A2
A4
A6
CS
NC
D8
D10
D12
D14
GND
WE
A8
A10
A12
A14
GND
D16
D18
D20
D22
VCC
A0-A15
OE
WE
CS
64Kx4
SRAM
64Kx4
SRAM
D0-D7
64Kx4
SRAM
64Kx4
SRAM
D8-D15
64Kx4
SRAM
64Kx4
SRAM
D16-D23
Pin Functions
Address Inputs
Data Input/Output
Chip Select
Write Enable
Output Enable
No Connect
Power (+5V)
Ground
A0 - A15
D0 - D23
CS
WE
OE
NC
V
CC
GND
Package Details
Plastic 56 Pin ZIP
SYS2464ZKX-12/15/20/25/35
ISSUE 1.0 June 1996
Package Information
Dimensions in mm
Plastic 56 Pin Zig-zag-In-Line (ZIP)
74.04 MAX
9.00 MAX
M2
2.54 TYP.
0
3.50 +/-0.5
15.0 MAX
2.54 TYP.
Ordering Information
SYS2464ZKXLI-12
Speed
12
15
20
25
35
= 12 ns
= 15 ns
= 20 ns
= 25 ns
= 35 ns
Temperature range
Blank = Commercial Temp.
I = Industrial Temp.
Blank = Standard Part
L = Low Power Part
ZKX = Plastic 56 Pin ZIP
2464 = 64K x 24
SYS = Static RAM
Power Consumption
Package
Organisation
Memory Type
Note : This document may be wholly or partially subject to change without notice. HMP Ltd devices are not authorised for use as
critical components in life support devices.
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