HANBit
HMS1M32M8G/Z8
H A N
SRAM MODULE 4Mbyte(1M x 32-Bit)
B I T
HMS1M32M8G, HMS1M32Z8
Part No.
GENERAL DESCRIPTION
The HMS1M32M8G/Z8 is a high-speed static random access memory (SRAM) module containing 1,048,576
words organized in a x32-bit configuration. The module consists of eight 1M x 4 SRAMs mounted on a 72-pin,
double-sided, FR4-printed circuit board.
PD0 to PD3 identify the module’s density allowing interchangeable use of alternate density, industry- standard
modules. 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
PIN ASSIGNMENT
1
3
5
7
9
NC
PD2
Vss
PD1
DQ8
2
4
6
8
NC
PD3
PD0
DQ0
DQ1
DQ2
DQ3
Vcc
High-density 4MByte 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
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
A7
A8
A9
FR4-PCB design
23 DQ12
25 DQ13
27 DQ14
29 DQ15
31 Vss
33 A15
35 / CE2
37 / CE4
39 A17
41 / OE
43 DQ24
45 DQ25
47 DQ26
49 DQ27
51 A3
53 A4
55 A5
57 Vcc
59 A6
61 DQ28
63 DQ29
65 DQ30
67 DQ31
69 A18
71 NC
DQ4
DQ5
DQ6
DQ7
/ WE
A14
/ CE1
/ CE3
A16
Low profile 72-pin
Part identification
- HMS1M32M8G : SIMM design, Gold Plate Lead
- HMS1M32Z8 : ZIP design
→ The both are pin-to-pin compatible
Vss
OPTIONS
Timing
MARKING
DQ16
DQ17
DQ18
DQ19
A10
A11
A12
A13
DQ20
DQ21
DQ22
DQ23
Vss
10ns access
12ns access
15ns access
17ns access
20ns access
Packages
-10
-12
-15
-17
-20
PD0 - Vss
PD1 - Open
PD2 - Vss
PD3 - Open
72-Pin ZIP
TOP VIEW
A19
NC
72-pin SIMM
72-pin ZIP
M
Z
1
HANBit Electronics Co.,Ltd.