HANBit
HMS3224M3/Z3
H A N
SRAM MODULE 768KBit (32K x 24-Bit)
B I T
HMS3224M3, HMS3224Z3
Part No.
GENERAL DESCRIPTION
The HMS3224M3/Z3 is a high-speed static random access memory (SRAM) module containing 32,768 words
organized in a x24-bit configuration. The module consists of three 32K x 8 SRAMs mounted on a 56-pin, single-
sided, FR4-printed circuit board.
Writing to the device is accomplished when the chip enable (/CE) and write enable(/WE) inputs are both LOW.
Data on the input/output pins (DQ0 through DQ23) of the device is written into the memory location specified
on the address pins (A0 through A14).
Reading the device is accomplished by taking the chip enable (/CE) and output enable(/OE) LOW while write
enable(/WE) remains HIGH. Under these conditions, the contents of the memory location specified on the address
pins will appear on the input/output pins.
The input/output pins remains in a high-impedance state unless the module is selected, outputs are enabled, and
write enable is HIGH.
PIN ASSIGNMENT
FEATURES
Access times : 12, 15 and 20ns
1
3
5
7
9
Vcc
Vcc
DQ1
DQ3
DQ5
DQ7 10
Vss 12
A1 14
A3 16
A5 18
A7 20
NC 22
Vss 24
DQ9 26
DQ11 28
DQ13 30
DQ15 32
NC 34
2
4
6
8
DQ0
DQ2
DQ4
DQ6
High-density 768Kbit design
High-reliability, high-speed design
Single + 5V ±0.5V power supply
56-pin, low-active power design
All inputs and outputs are TTL-compatible
Industry-standard pinout
11 Vss
13 A0
15 A2
17 A4
19 A6
21 / CE
23 NC
FR4-PCB design
25 DQ8
27 DQ10
29 DQ12
31 DQ14
33 Vss
35 / WE
37 A8
Part identification
HMS3224M3 : 56Pin SIMM Design
HMS3224Z3 : 56Pin ZIP Design
→Pin-compatible with the HMS3224M3
/ OE 36
A9 38
39 A10
41 A12
43 A14
45 Vss
47 DQ16
49 DQ18
51 DQ20
53 DQ22
55 Vcc
A11 40
A13 42
NC 44
Vss 46
DQ17 48
DQ19 50
DQ21 52
DQ23 54
Vcc 56
OPTIONS
Timing
MARKING
12ns access
15ns access
20ns access
Packages
-12
-15
-20
ZIP
56-pin SIMM
56-pin ZIP
M
Z
TOP VIEW
1
HANBit Electronics Co.,Ltd.