HANBit
HMS4M16M16G
H A N
SRAM MODULE 8Mbyte(4M x 16-Bit)
B I T
HMS4M16M16G
Part No.
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.
PIN ASSIGNMENT
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
1
3
5
7
9
Vcc
NC
Vss
NC
2
4
6
8
NC
NC
NC
DQ0
DQ1
DQ2
DQ3
Vcc
A7
DQ8
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
11 DQ9
13 DQ10
15 DQ11
17 A0
19 A1
21 A2
23 DQ12
25 DQ13
27 DQ14
29 DQ15
31 Vss
33 A15
35 / CE2
37 / CE4
39 A17
41 / OE
43 NC
45 NC
47 NC
49 NC
51 A3
53 A4
55 A5
57 Vcc
59 A6
61 NC
A8
A9
DQ4
DQ5
DQ6
DQ7
/ WE
A14
/ CE1
/ CE3
A16
Vss
NC
NC
NC
NC
A10
A11
A12
A13
NC
FR4-PCB design
Low profile 72-pin
Part identification
- HMS2M16M8G : SIMM design,Gold
OPTIONS
Timing
MARKING
10ns access
12ns access
15ns access
17ns access
20ns access
Packages
-10
-12
-15
-17
-20
NC
NC
NC
Vss
A19
A20
63 NC
65 NC
67 NC
69 A18
71
72-pin SIMM
M
SIMM/ZIP
TOP VIEW
1
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