HMS1M32M8G Datasheet, PDF (1/9 Pages) Hanbit Electronics Co.,Ltd – SRAM MODULE 4Mbyte(1M x 32-Bit)

HANBit
HMS1M32M8G/Z8
HAN
BI T
SRAM MODULE 4Mbyte(1M x 32-Bit)
Part No. HMS1M32M8G, HMS1M32Z8
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
Š Access times : 10, 12, 15, 17 and 20ns
PIN ASSIGNMENT
Š High-density 4MByte design
Š High-reliability, high-speed design
NC 2
PD3 4
PD0 6
Š Single + 5V ±10% power supply
DQ0 8
DQ1 10
Š Easy memory expansion /CE and /OE functions
Š All inputs and outputs are TTL-compatible
DQ2 12
DQ3 14
Vcc 16
Š Industry-standard pinout
A7 18
A8 20
Š FR4-PCB design
A9 22
Š Low profile 72-pin
DQ4 24
DQ5 26
Š Part identification
DQ6 28
DQ7 30
- HMS1M32M8G : SIMM design, Gold Plate Lead ^{/WE 32}
- HMS1M32Z8 : ZIP design
A14 34
/CE1 36
→ The both are pin-to-pin compatible
/CE3 38
A16 40
OPTIONS
MARKING
Vss 42
Š Timing
DQ16 44
DQ17 46
10ns access
-10
DQ18 48
DQ19 50
12ns access
-12
A10 52
A11 54
15ns access
-15
A12 56
17ns access
-17
A13 58
DQ20 60
20ns access
-20
DQ21 62
DQ22 64
Š Packages
DQ23 66
Vss 68
72-pin SIMM
M
A19 70
72-pin ZIP
Z
NC 72
1 NC
3 PD2
5 Vss
7 PD1
9 DQ8
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 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
PD0 - Vss
PD1 - Open
PD2 - Vss
PD3 - Open
72-Pin ZIP
TOP VIEW
1
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