HANBit
HMS25632J2V
SRAM MODULE 1Mbyte (256K x 32-Bit) 3.3V, 68-Pin JLCC Packaging
Part No.
HMS25632J2V
GENERAL DESCRIPTION
The HMS25632J2V 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 HMS25632J2V 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 +3.3V DC power supply and all inputs and outputs are fully LVTTL-compatible.
FEATURES
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Access times : 10, 12 ,15, and 70, 85, 100ns
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Low Power Dissipation
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High-density 1Mbyte design
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High-reliability, high-speed design
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Single + 3.3V
±0.3V
power supply
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Easy memory expansion /CE
and /OE functions
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All inputs and outputs are
LVTTL-compatible
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Industry-standard pinout
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FR4-PCB design
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Low profile 68-pin JLCC
PIN ASSIGNMENT
DQ16
NC
/A17
/BS3
/BS2
/BS1
/BS0
/CE1
Vcc
NC
/CE0
OE
/WE
A16
A15
A14
DQ15
DQ17
DQ18
DQ19
Vss
DQ20
DQ21
DQ22
DQ23
Vcc
DQ24
DQ25
DQ26
DQ27
Vss
DQ28
DQ29
DQ30
10 9 8
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
7
6
5
4
3
2
1 68 67 66 65 64 63 62 61
60
59
58
57
56
55
54
53
52
51
50
49
48
47
46
45
44
26
27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43
OPTIONS
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Timing
10ns access
12ns access
15ns access
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Packages
68-pin JLCC
MARKING
-10
-12
-15
DQ14
DQ13
DQ12
Vss
DQ11
DQ10
DQ9
DQ8
Vcc
DQ7
DQ6
DQ5
DQ4
Vss
DQ3
DQ2
DQ1
J
PIN FUNCTION
PIN NAME
A0-A17
DQ0-31
/WE
/CE
/OE
URL: www.hbe.co.kr
Rev. 1.0 (September / 2002)
PIN FUNCTION
Address Inputs
Data Inputs
Write Enable
Chip Enable
Output Enable
1
DQ31
A6
A5
A4
A3
A2
A1
A0
Vcc
A13
A12
A11
A10
A9
A8
A7
DQ0
JLCC TOP VIEW
PIN NAME
/BS0 ~ /BS3
Vcc
Vss
N.C
PIN FUNCTION
Byte Controls
Power(+3.3V)
Ground
No Connection
HANBit Electronics Co.,Ltd.
HANBIT [ HANBIT ELECTRONICS CO.,LTD ]
