SYS32256LK-12 [MOSAIC]
256K x 32 SRAM MODULE; 256K ×32的SRAM模块
| 型号： | SYS32256LK-12 |
| 厂家： | 
MOSAIC |
| 描述： | 256K x 32 SRAM MODULE |
| 文件： | 总2页 (文件大小：62K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
256K x 32 SRAM MODULE
SYS32256ZK/LK - 12/15/17
Issue 1.1 : January 1999
Description
Features
The SYS32256 is a plastic 8Mbit Static RAM
ModuleofferedinIndustryStandard64pinZIPand
64 lead SIMM package, organised as 256K x 32.
The module utilises eight fast 256K x 4 SRAMs
housed in SOJ packages, and uses double sided
surface mount techniques, to achieve a very high
density module.
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Access Times of 12/15/17 ns.
64 Pin ZIP & SIMM pinouts.
5 Volt Supply ± 10%.
Power Dissipation :
Operating (32bit mode) 9.0 W (maximum).
Standby (CMOS) -L
1.3 W (maximum).
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Completely Static Operation.
Fourchipselectsareusedtoindependentlyenable
the four bytes. Reading or Writing is executed on
individual or any combination of multiple bytes.
Two pins PD0 & PD1 are used to identify module
memory density where alternative versions of the
JEDEC standard modules can be interchanged.
Equal Access and Cycle Times.
All Inputs and Outputs Directly TTL Compatible.
On-board Supply Decoupling Capacitors.
72 pin SIMM (SYS32256LKX) available.
SIMM
Block Diagram
Pin Definition
ZIP
Gnd
PD0
PD1
D0
D8
D1
D9
D2
D10
D3
D11
Vcc
A0
A7
A1
A8
A2
A9
D12
1
2
3
4
5
6
7
8
GND
PD1
D8
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
PD0
D0
D1
D2
D3
2
4
6
8
A0-A17
OE
WE
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
D9
D10
D11
A0
A1
A2
D12
D13
D14
D15
GND
A15
CS2
10
12
14
16
18
20
22
24
26
28
30
32
256Kx4
SRAM
256Kx4
SRAM
Vcc
A7
A8
A9
D4
D5
D6
D7
D4-D7
D0-D3
D4
D13
D5
D14
D6
CS1
CS2
256Kx4
SRAM
256Kx4
SRAM
D12-D15
D20-D23
D28-D31
D8-D11
D16-D19
D24-D27
D15
D7
Gnd
WE
A15
A14
CS2
CS1
WE
A14
CS1
256Kx4
SRAM
256Kx4
SRAM
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
CS4
CS3
A17
A16
OE
Gnd
D24
D16
D25
D17
D26
D18
D27
D19
A3
CS4
A17
OE
D24
D25
D26
D27
A3
33
35
CS3
CS4
34
36
38
40
42
44
46
48
50
52
54
56
58
60
62
64
CS3
A16
GND
D16
D17
D18
D19
A10
A11
A12
A13
D20
D21
D22
D23
GND
256Kx4
SRAM
256Kx4
SRAM
37
39
41
43
45
47
49
51
53
55
57
59
61
63
A10
A4
A11
A5
A4
A5
VCC
A12
Vcc
A13
A6
D20
D28
D21
D29
D22
D30
D23
D31
Gnd
A6
D28
D29
D30
D31
Pin Functions
Address Inputs
Data Input/Output
Chip Select
A0 ~ A17
D0 ~ D31
CS1~4
WE
Package Details
Write Enable
Output Enable
Presence Detect
Power (+5V)
Ground
OE
Plastic 64 Pin ZIP
PD0~1
VCC
Plastic 64 Pin SIMM
GND
ISSUE 1.1 January 1999
SYS32256ZK/LK - 12/15/17
Package Information
Dimensions in mm
Plastic 64 Pin Zig-Zag-In-line Package (ZIP)
8.89 Max.
92.71
15.49 MAX
3.80 MIN
Pin 1
2.54 typ.
2.54 typ.
6.35typ
Plastic 64 Pin Single In-line Memory Module (SIMM)
97.92
91.03
5.59
48.90
Ordering Information
SYS32256ZK/LKLI - 012
Speed
12 = 12 ns
15 = 15 ns
17 = 17 ns
Temperature range
Blank = Commercial Temp.
= Industrial Temp.
I
Power Consumption
Package
Blank = Standard Part
= Low Power Part
L
ZK = Plastic 64 Pin ZIP
LK = Plastic 64 Pin SIMM
Organisation
Memory Type
32256 = 256K X 32
SYS = Static RAM
Note :
Although this data is believed to be accurate, the information contained herein is not intended to and does not create
any warranty of merchantibility or fitness for a particular purpose.
Our products are subject to a constant process of development. Data may be changed at any time without notice.
Products are not authorised for use as critical components in life support devices without the express written approval
of a company director.
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