A627308 Series
Preliminary
128K X 8 BIT CMOS SRAM
PRELIMINARY (February, 2001, Version 0.2)
AMIC Technology, Inc.
Document Title
128K X 8 BIT CMOS SRAM
Revision History
Rev. No. History
Issue Date
Remark
0.0
Initial issue
August 15, 2000
Preliminary
0.1
Omit 100ns grade items
October 25, 2000
Change I
CC1
from 70mA to 45mA
Change I
SB1
from 25
A to 15
A
0.2
Change I
SB1
from 15
A to 25
A
February 6, 2001
A627308 Series
Preliminary
128K X 8 BIT CMOS SRAM
PRELIMINARY (February, 2001, Version 0.2)
1
AMIC Technology, Inc.
NC
A14
A12
A7
A6
A5
A4
A3
A2
A1
A0
I/O
0
I/O
1
I/O
2
I/O
3
GND
I/O
4
I/O
5
I/O
6
I/O
7
A10
A9
A8
A13
CE2
A15
VCC
A11
A627308M
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
OE
CE1
WE
A10
7
6
5
4
3
GND
OE
CE1
2
1
0
A16
A627308V
(A627308X)
1
9
32
24
A11
A9
2
3
4
5
6
7
8
10
11
12
13
14
15
16
A8
A13
VCC
NC
A14
A12
A7
A6
A5
A4
31
30
29
28
27
26
25
23
22
21
20
19
18
17
I/O
I/O
I/O
I/O
I/O
A0
A1
A2
A3
A15
WE
CE2
I/O
I/O
I/O
~~
~~
A16
Features
n
Power supply range: 4.5V to 5.5V
n
Access times: 70 ns (max.)
n
Current:
Operating: 45mA (max.)
Standby: 25
A (max.)
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
Output enable and two chip enable inputs for easy
application
n
Data retention voltage: 2V (min.)
n
Available in 32-pin SOP, TSOP, sTSOP (8X
13.4mm) forward type packages
General Description
The A627308 is a low operating current 1048,576-bit
static random access memory organized as 131,072
words by 8 bits and operates on a power supply 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.
Two chip enable inputs are provided for power down and
a write enable and an output enable input are included
for easy interfacing.
Data retention is guaranteed at a power supply voltage
as low as 2V.
Pin Configurations
n
n
SOP
n
n
TSOP/(sTSOP)
(forward type)
A627308 Series
PRELIMINARY (February, 2001, Version 0.2)
2
AMIC Technology, Inc.
Block Diagram
ROW
DECODER
512 X 2048
MEMORY ARRAY
INPUT DATA
CIRCUIT
COLUMN I/O
CONTROL
CIRCUIT
CE2
CE1
WE
I/O
7
I/O
0
A16
A15
A14
A0
VCC
GND
OE
Pin Descriptions - SOP
Pin No.
Symbol
Description
2 - 12, 23,
25 - 28, 31
A0 - A16
Address Inputs
13 - 15,
17 - 21
I/O
0
- I/O
7
Data Inputs/Outputs
22
CE1
Chip Enable 1
30
CE2
Chip Enable 2
24
OE
Output Enable
29
WE
Write Enable
32
VCC
Power Supply
16
GND
Ground
1
NC
No Connection
Pin Description - TSOP/sTSOP
Pin No.
Symbol
Description
1 - 4, 7,
10 - 20, 31
A0 - A16
Address Inputs
21 - 23,
25 - 29
I/O
0
- I/O
7
Data Inputs/Outputs
30
CE1
Chip Enable 1
6
CE2
Chip Enable 2
32
OE
Output Enable
5
WE
Write Enable
8
VCC
Power Supply
24
GND
Ground
9
NC
No Connection
A627308 Series
PRELIMINARY (February, 2001, Version 0.2)
3
AMIC Technology, Inc.
Recommended DC Operating Conditions
(T
A
= 0
C to + 70
C)
Symbol
Parameter
Min.
Typ.
Max.
Unit
VCC
Supply Voltage
4.5
5.0
5.5
V
GND
Ground
0
0
0
V
V
IH
Input High Voltage
2.2
-
VCC + 0.5
V
V
IL
Input Low Voltage
-0.5
-
+0.8
V
C
L
Output Load
-
-
30
pF
TTL
Output Load
-
-
1
-
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 . . . . . . . . -25
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 this 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 or intended. Exposure to the absolute
maximum rating conditions for extended periods may
affect device reliability.
DC Electrical Characteristics
(T
A
= 0
C to + 70
C, VCC = 5.0V
10%, GND = 0V)
Symbol
Parameter
A627308-70S
Unit
Conditions
Min.
Max.
I
LI
Input Leakage Current
-
1
A
V
IN
= GND to VCC
I
LO
Output Leakage Current
-
1
A
CE1
= V
IH
or CE2 = V
IL
or
OE
= V
IH
or WE = V
IL
V
I/O
= GND to VCC
I
CC
Active Power Supply Current
-
7
mA
CE1
= V
IL
, CE2 = V
IH
I
I/O
= 0mA
I
CC1
Dynamic Operating Current
-
45
mA
Min. Cycle, Duty = 100%
CE1
= V
IL
, CE2 = V
IH
I
I/O
= 0mA
I
CC2
Dynamic Operating Current
-
7
mA
CE1
= V
IL
, CE2 = V
IH
V
IH
= VCC
, V
IL
= 0V
F = 1MHz,
I
I/O
= 0mA
A627308 Series
PRELIMINARY (February, 2001, Version 0.2)
4
AMIC Technology, Inc.
DC Electrical Characteristics
(continued)
Symbol
Parameter
A627308-70S
Unit
Conditions
Min.
Max.
I
SB
-
0.5
mA
CE1
= V
IH
or
CE2 = V
IL
I
SB1
Standby Power
Supply Current
-
25
A
CE2
0.2V, or
CE1
VCC - 0.2V
V
OL
Output Low Voltage
-
0.4
V
I
OL
= 2.1mA
V
OH
Output High Voltage
2.4
-
V
I
OH
= -1.0mA
Truth Table
Mode
CE1
CE2
OE
WE
I/O Operation
Supply Current
Standby
H
X
X
X
High Z
I
SB
, I
SB1
X
L
X
X
High Z
I
SB
, I
SB1
Output Disable
L
H
H
H
High Z
I
CC,
I
CC1,
I
CC2
Read
L
H
L
H
D
OUT
I
CC,
I
CC1,
I
CC2
Write
L
H
X
L
D
IN
I
CC,
I
CC1,
I
CC2
Note: X = H or L
Capacitance
(T
A
= 25
C, f = 1.0MHz)
Symbol
Parameter
Min.
Max.
Unit
Conditions
C
IN
*
Input Capacitance
-
6
pF
V
IN
= 0V
C
I/O
*
Input/Output Capacitance
-
8
pF
V
I/O
= 0V
* These parameters are sampled and not 100% tested.
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