IS62C256-70U ISSI, Integrated Silicon Solution Inc, IS62C256-70U Datasheet - Page 2

• Manufacturer Part Number: IS62C256-70U
• Description: IC SRAM 256KBIT 70NS 28SOP
• Manufacturer: ISSI, Integrated Silicon Solution Inc

Specifications of IS62C256-70U

• Format - Memory: RAM
• Memory Type: SRAM - Asynchronous
• Memory Size: 256K (32K x 8)
• Speed: 70ns
• Interface: Parallel
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 28-SOP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

IS62C256
PIN CONFIGURATION
28-Pin SOP
ABSOLUTE MAXIMUM RATINGS
Note:
1. Stress greater than those listed under ABSOLUTE MAXIMUM RATINGS may cause
2
PIN DESCRIPTIONS
A0-A14
CS
OE
WE
I/O0-I/O7
Vcc
GND
Symbol
V
T
T
P
I
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 operational sections of
this specification is not implied. Exposure to absolute maximum rating conditions for extended
periods may affect reliability.
OUT
BIAS
STG
TERM
T
GND
I/O0
I/O1
I/O2
A14
A12
A7
A6
A5
A4
A3
A2
A1
A0
Parameter
Terminal Voltage with Respect to GND
Temperature Under Bias
Storage Temperature
Power Dissipation
DC Output Current (LOW)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Address Inputs
Chip Select Input
Output Enable Input
Write Enable Input
Input/Output
Power
Ground
28
27
26
25
24
23
22
21
20
19
18
17
16
15
VCC
WE
A13
A8
A9
A11
OE
A10
CS
I/O7
I/O6
I/O5
I/O4
I/O3
(1)
TRUTH TABLE
Mode
Not Selected
(Power-down)
Output Disabled
Read
Write
PIN CONFIGURATION
28-Pin TSOP
VCC
A11
A13
A14
A12
WE
OE
A9
A8
A7
A6
A5
A4
A3
–0.5 to +7.0
–55 to +125
–65 to +150
Value
0.5
22
23
24
25
26
27
28
1
2
3
4
5
6
7
20
Integrated Silicon Solution, Inc. — 1-800-379-4774
WE
WE WE
WE WE
H
H
X
L
CS CS CS CS CS
H
L
L
L
Unit
mA
W
V
C
C
OE OE OE OE OE
H
X
L
X
I/O Operation
High-Z
High-Z
D
D
OUT
IN
ISSI
Vcc Current
I
I
I
I
CC
CC
CC
SB
21
20
19
18
17
16
15
14
13
12
11
10
9
8
1
1
1
1
, I
, I
, I
, I
SR072-1E
SB
CC
CC
CC
05/12/99
A10
CS
I/O7
I/O6
I/O5
I/O4
I/O3
GND
I/O2
I/O1
I/O0
A0
A1
A2
2
2
2
2
®