HMS25632J2 Datasheet, PDF (1/6 Pages) Hanbit Electronics Co.,Ltd – SRAM MODULE 1Mbyte (256K x 32-Bit), 5V, 68-Pin JLCC Design

HANBit
HMS25632J2
SRAM MODULE 1Mbyte (256K x 32-Bit), 5V, 68-Pin JLCC Design
Part No. HMS25632J2
GENERAL DESCRIPTION
The HMS25632J2 is a high-speed static random access memory (SRAM) module containing 262,144 words organized in a
x32-bit configuration. The module consists of two 256K x 16 SRAMs mounted on a 68-pin, double-sided, FR4-printed circuit
board. The HMS25632J2 uses 31 common input and output lines and has an output enable pin which operates faster than
address access time at read cycle. Also it allows that lower and upper byte access by data byte control (/BS0~/BS3). 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
w Access times : 10, 12 and 15, 55ns
w Low Power Dissipation
w High-density 1Mbyte design
w High-reliability, high-speed design
w Single + 5V ±0.5V power supply
wEasy memory expansion /CE
and /OE functions
w All inputs and outputs are TTL-compatible
w Industry-standard pinout
w FR4-PCB design
w Low profile 68-pin JLCC
OPTIONS
w Timing
10ns access
12ns access
15ns access
MARKING
-10
-12
-15
w Packages
68-pin JLCC
J
PIN ASSIGNMENT
DQ17
DQ18
DQ19
Vss
DQ20
DQ21
DQ22
DQ23
Vcc
DQ24
DQ25
DQ26
DQ27
Vss
DQ28
DQ29
DQ30
109 ^{8 7 6 5 4 3 2 1 68 67 66 65 64 63 62 6610}
11
59
12
58
13
57
14
56
15
55
16
54
17
53
18
52
19
51
20
50
21
49
22
48
23
47
24
46
25
45
26
44
27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43
DQ14
DQ13
DQ12
Vss
DQ11
DQ10
DQ9
DQ8
Vcc
DQ7
DQ6
DQ5
DQ4
Vss
DQ3
DQ2
DQ1
PIN FUNCTION
PIN NAME
A0-A17
DQ0-31
/WE
/CE
/OE
PIN FUNCTION
Address Inputs
Data Inputs
Write Enable
Chip Enable
Output Enable
JLCC TOP VIEW
PIN NAME
/BS0 ~ /BS3
Vcc
Vss
N.C
PIN FUNCTION
Byte Controls
Power(+5.0V)
Ground
No Connection
URL: www.hbe.co.kr
Rev. 1.0 (September / 2002)
1
HANBit Electronics Co.,Ltd.