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HMS1M32Z8L

Description
SRAM MODULE 4Mbyte(1Mx32Bit) ,LOW POWER,72Pin SIMM,5V
File Size92KB,7 Pages
ManufacturerHANBIT Electronics
Websitehttp://www.hbe.co.kr/
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HMS1M32Z8L Overview

SRAM MODULE 4Mbyte(1Mx32Bit) ,LOW POWER,72Pin SIMM,5V

HANBit
HMS1M32M8L
SRAM MODULE 4Mbyte(1Mx32Bit) ,LOW POWER,72Pin SIMM,5V
Part No.
HMS1M32M8L, HMS1M32Z8L
GENERAL DESCRIPTION
The HMS1M32M8L is a static random access memory (SRAM) module containing 1,048,576 bits organized in a x32-bit
configuration. The module consists of eight 512K x 8 SRAMs mounted on a 72-pin, double-sided, FR4-printed circuit board.
The HMS1M32M8L also support low data retention voltage for battery back-up operations with low data retention current. Eight
chip enable inputs, (/CE_UU1, /CE_UM1, /CE_LM1, /CE_LL1, /CE_UU2, /CE_UM2, /CE_LM2, /CE_LL2) are used to enable
the module’s 4M bytes independently. Output enable(/OE) and write enable(/WE) can set the memory input and output.
Data is written into the SRAM memory when write enable (/WE) and chip enable (/CE) inputs are both LOW.
accomplished when /WE remains HIGH and /CE and output enable (/OE) are LOW.
For reliability, this SRAM module is designed as multiple power and ground pin. All module components may be powered from
a single +5V DC power supply and all inputs and outputs are fully TTL-compatible.
Reading is
FEATURES
w
Part identification
- HMS1M32M8L : SIMM design
- HMS1M32Z8L : ZIP design
The both are Pin to Pin Compatible
w
Access times : 55ns, 70ns
w
High-density 4MByte design
w
High-reliability, low-power design
w
Single + 5V
±0.5V
power supply
w
Low data retention voltage : 2V(min)
w
Three state output and TTL-compatible
w
FR4-PCB design
w
Low profile 72-Pin SIMM
PIN
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
PIN ASSIGNMENT
SYMBOL
Vss
A3
A2
A1
A0
Vcc
A11
/OE
A10
Vcc
/CE_LL2
/CE_LL1
DQ7
DQ0
DQ1
DQ2
DQ6
DQ5
DQ4
DQ3
A15
A17
/WE
A13
PIN
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
SYMBOL
Vcc
DQ8
DQ9
DQ10
/CE_LM2
Vcc
/CE_LM1
DQ15
DQ14
DQ13
DQ12
DQ11
A18
A16
Vss
A6
Vcc
A5
A4
Vcc
/CE_UM2
/CE_UM1
DQ23
DQ16
PIN
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
SYMBOL
DQ17
DQ18
DQ22
DQ21
DQ20
DQ19
Vcc
A14
A12
A7
Vcc
A8
A9
DQ24
DQ25
DQ26
/CE_UU2
/CE_UU1
DQ31
DQ30
DQ29
DQ28
DQ27
Vss
OPTIONS
w
Timing
55ns access
70ns access
w
Packages
72-pin SIMM
72-pin ZIP
MARKING
-55
-70
M
Z
SIMM
TOP VIEW
URL: www.hbe.co.kr
Rev. 1.0 (September / 2002)
1
HANBit Electronics Co.,Ltd.

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