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
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All inputs and outputs are TTL-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
w
Timing
10ns access
12ns access
15ns access
w
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(+5.0V)
Ground
No Connection
HANBit Electronics Co.,Ltd.
HANBit
FUNCTIONAL BLOCK DIAGRAM
HMS25632J2
DQ0 - DQ31
A0 - A17
/WE
/OE
/BS0
/BS1
/CE0
32
18
A0-17
/WE
/OE
/LB
/UB
/CE
DQ 0-15
U1
A0-17
/WE
/OE
/BS2
/BS3
DQ 16-31
U2
/LB
/UB
/CE
/CE1
ABSOLUTE MAXIMUM RATINGS
PARAMETER
Voltage on Any Pin Relative to Vss
Voltage on Vcc Supply Relative to Vss
Power Dissipation
Storage Temperature
Operating Temperature
Commercial
Industrial
SYMBOL
V
IN,OUT
V
CC
P
D
T
STG
T
A
T
A
RATING
-0.5V to +7.0V
-0.5V to +7.0V
2W
-65oC to +150oC
0oC to +70oC
-40 C to +85 C
O
O
w
Stresses greater than those listed under " Absolute Maximum Ratings" may cause permanent damage to the device.
This is a stress rating only and functional operation of the device at these or any other conditions above those indicated
in the operating section of this specification is not implied. Exposure to absolute maximum rating conditions for extended
periods may affect reliability.
URL: www.hbe.co.kr
Rev. 1.0 (September / 2002)
2
HANBit Electronics Co.,Ltd.
HANBit
RECOMMENDED DC OPERATING CONDITIONS
PARAMETER
Supply Voltage
Ground
Input High Voltage
Input Low Voltage
*
SYMBOL
V
CC
V
SS
V
IH
V
IL
( TA=0 to 70 o C )
MIN
4.5V
0
2.2
-0.5*
TYP.
5.0V
0
-
-
HMS25632J2
MAX
5.5V
0
Vcc+0.5V**
0.8V
V
IL
(Min.) = -2.0V (Pulse Width
≤
10ns) for I
≤
20 mA
**
V
IH
(Min.) = Vcc+2.0V (Pulse Width
≤
8ns) for I
≤
20 mA
DC AND OPERATING CHARACTERISTICS (1)
(0oC
≤
TA
≤
70 oC ; Vcc = 5.0V
±
10%, Unless otherwise specified)
PARAMETER
Input Leakage Current
Output Leakage Current
Output High Voltage
Output Low Voltage
* Vcc=5.0V±5%, Temp=25 oC
TEST CONDITIONS
V
IN
= Vss to Vcc
/CE=V
IH or /
OE =V
IH
or /WE=V
IL
V
OUT
=Vss to V
CC
I
OH
= -4.0mA
I
OL
= 8.0mA
SYMBOL
IL
I
IL
0
V
OH
V
OL
MIN
-4
-4
2.4
3.95
MAX
4
4
UNITS
µA
µA
V
V
DC AND OPERATING CHARACTERISTICS (2)
DESCRIPTION
TEST CONDITIONS
Min. Cycle, 100% Duty
/CE=V
IL
, V
IN
=V
IH
or V
IL
,
I
OUT
=0mA
Min. Cycle, /CE=V
IH
f=0MHZ, /CE≥V
CC
-0.2V,
V
IN
≥
V
CC
-0.2V or V
IN
≤0.2V
l
SB
l
SB1
100
20
100
20
100
20
mA
mA
l
CC
520
510
500
mA
SYMBOL
MAX
-10
-12
-15
UNIT
Power Supply
Current: Operating
Power Supply
Current: Standby
CAPACITANCE
DESCRIPTION
Input /Output Capacitance
Input Capacitance
TEST CONDITIONS
V
I/O
=0V
V
IN
=0V
SYMBOL
C
I/O
C
IN
MAX
16
14
UNIT
pF
pF
* NOTE
: Capacitance is sampled and not 100% tested
URL: www.hbe.co.kr
Rev. 1.0 (September / 2002)
3
HANBit Electronics Co.,Ltd.
HANBit
AC CHARACTERISTICS
(0oC
≤
TA
≤
70 oC ; Vcc = 5.0V
±
10%, unless otherwise specified)
PARAMETER
Input Pulse Level
Input Rise and Fall Time
Input and Output Timing Reference Levels
Output Load
VALUE
0 to 3V
3ns
1.5V
HMS25632J2
See below
TEST CONDITIONS
Output Load (A)
V
L
=1.5V
50Ω
D
OUT
Z0=50Ω
D
OUT
30pF
255Ω
Output Load (B)
for t
HZ
, t
LZ
, t
WHZ
, t
OW
, t
OLZ
& t
OHZ
+5.0V
480Ω
5pF*
READ CYCLE
-10
PARAMETER
Read Cycle Time
Address Access Time
Chip Select to Output
Output Enable to Valid Output
/BS0 ~ /BS3 Access Time
Chip Enable to Low-Z Output
Output Enable to Low-Z Output
/BS0 ~ /BS3 Enable to Low-Z Output
Chip Disable to High-Z Output
Output Disable to High-Z Output
/BS0 ~ /BS3 Disable to High-Z Output
Output Hold from address Change
SYMBOL
MIN
t
RC
t
AA
t
CO
t
OE
t
BA
t
LZ
t
OLZ
t
BHZ
t
HZ
t
OHZ
t
BHZ
t
OH
10
-
-
-
-
3
0
0
0
0
0
3
MAX
-
10
10
5
5
-
-
-
5
5
5
-
MIN
12
-
-
-
-
3
0
0
0
0
0
3
MAX
-
12
12
6
6
-
-
-
6
6
6
-
MIN
15
-
-
-
-
3
0
0
0
0
0
3
MAX
-
15
15
7
7
-
-
-
7
7
7
-
Ns
Ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
-12
-15
UNIT
URL: www.hbe.co.kr
Rev. 1.0 (September / 2002)
4
HANBit Electronics Co.,Ltd.
HANBit
WRITE CYCLE
PARAMETER
Write Cycle Time
Chip Select to End of Write
Address Set-up Time
Address Valid to End of Write
Write Pulse Width (/OE High)
Write Pulse Width (/OE Low)
Write Recovery Time
Write to Output High-Z
Data to Write Time Overlap
Data Hold from Write Time
End of Write to Output Low-Z
SYMBOL
t
WC
t
CW
t
AS
t
AW
t
WP
t
WP1
t
WR
t
WHZ
t
DW
t
DH
t
OW
-10
MIN
10
7
0
7
7
10
0
0
5
0
3
MAX
-
-
-
-
-
-
-
5
-
-
-
MIN
12
8
0
8
8
12
0
0
6
0
3
-12
MAX
-
-
-
-
-
-
-
6
-
-
-
HMS25632J2
-15
MIN
15
10
0
10
10
15
0
0
7
0
3
MAX
-
-
-
-
-
-
-
7
-
-
-
UNIT
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
TIMING DIAGRAMS
Please refer to timing diagram chart.
FUNCTIONAL DESCRIPTION
/CE
H
L
L
L
/WE
X*
H
H
L
/OE
X
H
L
X
MODE
Not Select
Output Disable
Read
Write
I/O PIN
High-Z
High-Z
D
OUT
D
IN
SUPPLY CURRENT
I
SB
, I
SB1
I
CC
I
CC
I
CC
Note: X means Don't Care
URL: www.hbe.co.kr
Rev. 1.0 (September / 2002)
5
HANBit Electronics Co.,Ltd.
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