A625308A Series
Preliminary
Document Title
32K X 8 BIT CMOS SRAM
Revision History
Rev. No.
0.0
0.1
0.2
32K X 8 BIT CMOS SRAM
History
Initial issue
Add ultra temp grade and 28-pin DIP package type
Add SI grade
Issue Date
February 2, 2001
November 7, 2001
July 17, 2002
Remark
Preliminary
PRELIMINARY
(July, 2002, Version 0.2)
AMIC Technology, Inc.
A625308A Series
Preliminary
Features
n
Power Supply Range: 4.5V to 5.5V
n
Access times: 70 ns
A625308A-S series:
Operating:
Standby:
A625308A-SI/SU series: Operating:
Standby:
n
Extended operating temperature range: 0°C to 70°C
for -S series, -25°C to 85°C for -SI series, -40°C to
85°C for -SU series.
n
Full static operation, no clock or refreshing required
n
All inputs and outputs are directly TTL-compatible
n
Common I/O using three-state output
n
Data retention voltage: 2.0V (min.)
n
Available in 28-pin, DIP/SOP and TSOP
32K X 8 BIT CMOS SRAM
35mA (max.)
10µA (max.)
35mA (max.)
15µA (max.)
General Description
The A625308A is a low operating current 262,144-bit
static random access memory organized as 32,768
words by 8 bits and operates on a voltage from 4.5V to
5.5V.
Inputs and three-state outputs are TTL compatible and
allow for direct interfacing with common system bus
structures.
Minimum standby power is drawn by this device when
CE is at a high level, independent of the other input
levels.
Data retention is guaranteed at a power supply voltage
as low as 2.0V.
Pin Configurations
n
DIP / SOP
n
TSOP
A14
A12
A7
A6
A5
A4
A3
A2
A1
A0
I/O
0
I/O
1
I/O
2
GND
1
2
3
4
28
27
26
25
VCC
WE
A13
A8
A9
A11
OE
A10
CE
I/O
7
I/O
6
I/O
5
I/O
4
I/O
3
5
6
7
8
9
10
11
12
13
14
24
23
22
21
20
19
18
17
16
15
PRELIMINARY
(July, 2002, Version 0.2)
1
~
OE
A11
A9
A8
A13
WE
VCC
A14
A12
A7
A6
A5
A4
A3
1
2
3
4
5
6
7
8
9
10
11
12
13
14
~
A625308AV
28
27
26
25
24
23
22
21
20
19
18
17
16
15
A10
CE
I/O
7
I/O
6
I/O
5
I/O
4
I/O
3
VSS
I/O
2
I/O
1
I/O
0
A0
A1
A2
A625308A(M)
AMIC Technology, Inc.
A625308A Series
Block Diagram
A0
VCC
GND
A12
A13
A14
ROW
DECODER
512 X 512
MEMORY ARRAY
I/O
0
INPUT DATA
CIRCUIT
COLUMN I/O
I/O
7
CE
OE
WE
CONTROL
CIRCUIT
Pin Descriptions – DIP / SOP
Pin No.
1-10, 21, 23-26
11-13, 15-19
20
22
27
28
14
Symbol
A0 - A14
I/O
0
- I/O
7
CE
OE
WE
VCC
GND
Description
Address Input
Data Input/Output
Chip Enable
Output Enable
Write Enable
Power Supply
Ground
Pin Description-TSOP
Pin No.
2-5, 8-17, 28
18-20, 22-26
27
1
6
7
21
Symbol
A0 - A14
I/O
0
- I/O
7
CE
OE
WE
VCC
GND
Description
Address Input
Data Input/Output
Chip Enable
Output Enable
Write Enable
Power Supply
Ground
PRELIMINARY
(July, 2002, Version 0.2)
2
AMIC Technology, Inc.
A625308A Series
Recommended DC Operating Conditions
(T
A
= 0°C to +70°C, -25°C to +85°C or -40°C to +85°C)
Symbol
VCC
GND
V
IH
V
IL
Parameter
Supply Voltage
Ground
Input High Voltage
Input Low Voltage
Min.
4.5
0
2.2
-0.5
Typ.
5.0
0
-
0
Max.
5.5
0
VCC + 0.5
+0.8
Unit
V
V
V
V
Absolute Maximum Ratings*
VCC to GND . . . . . . . . . . . . . . . . . . . . . . -0.5V to +7.0V
IN, IN/OUT Volt to GND . . . . . . . . . -0.5V to VCC + 0.5V
Operating Temperature, Topr . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . 0°C to +70°C or -40°C to +85°C
Storage Temperature, Tstg . . . . . . . . . -55°C to +125°C
Power Dissipation, P
T
. . . . . . . . . . . . . . . . . . . . . . 0.7W
Soldering Temp. & Time . . . . . . . . . . . . . 260°C, 10 sec
*Comments
Stresses above those listed under "Absolute Maximum
Ratings" may cause permanent damage to the device.
These are stress ratings only. Functional operation of this
device at these or any other conditions above those
indicated in the operational sections of this specification
is not implied and exposure to absolute maximum rating
conditions for extended periods may affect device
reliability.
DC Electrical Characteristics
(T
A
= 0°C to +70°C, -25°C to +85°C or -40°C to +85°C, VCC = 5.0V
±
10%, GND = 0V)
Symbol
Parameter
A625308A-70S/SI/SU
Min.
I
LI
I
LO
I
CC
Input Leakage Current
Output Leakage Current
Active Power Supply Current
-
-
-
Max.
1
1
5
µA
µA
mA
V
IN
= GND to VCC
CE = V
IH
V
I/O
= GND to VCC
CE = V
IL
, I
I/O
= 0mA
Min. Cycle, Duty = 100%
CE = V
IL
, I
I/O
= 0mA
CE = V
IL
, V
IH
= VCC
V
IL
= 0V, f = 1 MHz
I
I/O
= 0 mA
Unit
Conditions
I
CC1
Dynamic Operating Current
-
35
mA
I
CC2
Dynamic Operating Current
-
5
mA
PRELIMINARY
(July, 2002, Version 0.2)
3
AMIC Technology, Inc.
A625308A Series
DC Electrical Characteristics (continued)
Symbol
Parameter
A625308A-70S
Min.
I
SB
Supply Current
Standby Power
I
SB1
V
OL
V
OH
Output Low Voltage
Output High Voltage
-
-
2.4
10
0.4
-
-
-
2.4
15
0.4
-
µA
V
V
-
Max.
0.5
A625308A-70SI/SU
Min.
-
Max.
0.5
mA
CE = V
IH
CE
≥
VCC - 0.2V
V
IN
≥
0V
I
OL
= 2.1 mA
I
OH
= -1.0 mA
Unit
Conditions
Truth Table
Mode
Standby
Output Disable
Read
Write
Note: X: H or L
CE
H
L
L
L
OE
X
H
L
X
WE
X
H
H
L
I/O Operation
High Z
High Z
D
OUT
D
IN
Supply Current
I
SB
, I
SB1
I
CC
, I
CC1
, I
CC2
I
CC
, I
CC1
, I
CC2
I
CC
, I
CC1
, I
CC2
Capacitance
(T
A
= 25°C, f = 1.0 MHz)
Symbol
C
IN
*
C
I/O
*
Parameter
Input Capacitance
Input/Output Capacitance
Min.
-
-
Max.
6
8
Unit
pF
pF
Conditions
V
IN
= 0V
V
I/O
= 0V
* These parameters are sampled and not 100% tested.
PRELIMINARY
(July, 2002, Version 0.2)
4
AMIC Technology, Inc.