HANBit
HAN
BIT
HMS4M16M16G
SRAM MODULE 8Mbyte(4M x 16-Bit)
Part No.
HMS4M16M16G
GENERAL DESCRIPTION
The HMS4M16M16G is a high-speed static random access memory (SRAM) module containing 2,097,152
words organized in 4M x16-bit configuration. The module consists of sixteen 1M x 4 SRAMs mounted on a 72-
pin, double-sided, FR4-printed circuit board.
Eight chip enable inputs, (/CE1, /CE2, /CE3 and /CE4) are used to enable the module’s 4 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.
Reading is 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.
FEATURES
Access times : 10, 12, 15, 17 and 20ns
High-density 8MByte design
High-reliability, high-speed design
Single + 5V
±10%
power supply
Easy memory expansion /CE and /OE functions
All inputs and outputs are TTL-compatible
Industry-standard pinout
FR4-PCB design
Low profile 72-pin
Part identification
- HMS2M16M8G : SIMM design,Gold
NC
NC
NC
DQ0
DQ1
DQ2
DQ3
Vcc
A7
A8
A9
DQ4
DQ5
DQ6
DQ7
/WE
A14
/CE1
/CE3
A16
Vss
NC
NC
NC
NC
A10
A11
A12
A13
NC
NC
NC
NC
Vss
A19
A20
PIN ASSIGNMENT
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
58
60
62
64
66
68
70
72
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
57
59
61
63
65
67
69
71
Vcc
NC
Vss
NC
DQ8
DQ9
DQ10
DQ11
A0
A1
A2
DQ12
DQ13
DQ14
DQ15
Vss
A15
/CE2
/CE4
A17
/OE
NC
NC
NC
NC
A3
A4
A5
Vcc
A6
NC
NC
NC
NC
A18
OPTIONS
Timing
10ns access
12ns access
15ns access
17ns access
20ns access
MARKING
-10
-12
-15
-17
-20
M
Packages
72-pin SIMM
Vcc
SIMM/ZIP
TOP VIEW
1
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