E2I0025-17-Y1
¡ Semiconductor
¡ Semiconductor
MSM521008
131,072-Word
¥
8-Bit CMOS STATIC RAM
This version: Jan. 1998
MSM521008
Previous version: Aug. 1996
DESCRIPTION
The MSM521008 is a 131,072-word by 8-bit CMOS fast static RAM featuring a single 5 V power
supply operation and direct TTL input/output compatibility. Since the circuitry is completely static,
external clock and refreshing operations are unnecessary, making this device very easy to use. The
MSM521008 uses NMOS cells and CMOS peripherals and provides high-speed operation at 17 ns
access time. In addition, the MSM521008 is provided with a chip enable signal (CE
1
) suited to the
expansion of a memory capacity, a chip enable signal (CE
2
) suited to the power-down function, and
an output enable signal (OE) suited to the I/O bus line control.
FEATURES
• 131,072-word
¥
8-bit configuration
• Single 5 V power supply
• Fully static operation
• Operating temperature range: Ta = 0°C to 70°C
• Power dissipation
Standby:
1 mA (Max.)
Operation:
- 17
180 mA (Max.)
- 20
170 mA (Max.)
- 25
160 mA (Max.)
• Access time:
- 17
17 ns (Max.)
- 20
20 ns (Max.)
- 25
25 ns (Max.)
• (Input/Output) TTL compatible
• Power-down function by chip enable signal
• 3-state output
• Package:
32-pin 400 mil plastic SOJ
(SOJ32-P-400-1.27)
(Product : MSM521008-xxJS)
xx indicates speed rank.
PRODUCT FAMILY
Family
MSM521008-17
MSM521008-20
MSM521008-25
Access Time (Max.)
17 ns
20 ns
25 ns
Package
400 mil
32-pin SOJ
1/11
¡ Semiconductor
PIN CONFIGURATION (TOP VIEW)
NC 1
A0 2
A1 3
A2 4
A3 5
A4 6
A5 7
A6 8
A7 9
A8 10
A9 11
A10 12
I/O0 13
I/O1 14
I/O2 15
V
SS
16
Pin Name
A0 - A16
I/O0 - I/O7
CE
1
, CE
2
OE
WE
V
CC
, V
SS
NC
MSM521008
32 V
CC
31 A16
30 CE
2
29
WE
28 A15
27 A14
26 A13
25 A12
24
OE
23 A11
22
CE
1
21 I/O7
20 I/O6
19 I/O5
18 I/O4
17 I/O3
32-Pin Plastic SOJ
Function
Address Input
Data Input/Output
Chip Enable
Output Enable
Write Enable
Power Supply
No Connection
2/11
¡ Semiconductor
MSM521008
BLOCK DIAGRAM
A5
A10
A9
A8
A6
A3
A2
A1
A0
I/O0
I/O1
I/O2
I/O3
I/O4
I/O5
I/O6
I/O7
Memory Array
512 Rows
256 Columns
¥
8 Blocks
V
CC
V
SS
Row
Select
Input
Data
Control
Column I/O
Circuits
Column Select
A4
A7
A11 A13 A15
A12 A14 A16
CE
2
CE
1
WE
OE
FUNCTION TABLE
Operating Mode
CE
1
H
Read Cycle
*
L
L
H
Write Cycle
*
L
CE
2
*
L
H
H
*
L
H
WE
*
*
H
H
*
*
L
OE
*
*
H
L
*
*
*
Data Read
Output Floating
Data Write
Output Floating
Operating Contents
Power Mode
Standby
Standby
Active
Active
Standby
Standby
Active
*Don't
Care ("H" or "L")
3/11
¡ Semiconductor
MSM521008
ELECTRICAL CHARACTERISTICS
Absolute Maximum Ratings
Parameter
Power Supply Voltage
Pin Voltage
Power Dissipation
Operating Temperature
Storage Temperature
Symbol
V
CC
V
T
P
D
T
opr
T
stg
Condition
Ta = 25°C, for V
SS
Ta = 25°C
—
—
Rating
–0.3 to 7.0
–0.3* to V
CC
+ 0.3
1.0
0 to 70
–55 to 125
Unit
V
V
W
°C
°C
*
–3.0 V Min. for pulse width less than 10 ns.
Recommended Operating Conditions
Parameter
Power Supply Voltage
Input High Voltage
Input Low Voltage
Load Capacitance
Symbol
V
CC
V
SS
V
IH
V
IL
C
L
Condition
—
V
CC
= 5 V ±10%
—
Min.
4.5
0
2.2
–0.3*
—
Typ.
5
0
—
—
—
Max.
5.5
0
V
CC
+ 0.3
0.8
30
Unit
V
V
V
V
pF
*
–3.0 V Min. for pulse width less than 10 ns.
Capacitance
(Ta = 25°C, f = 1 MHz)
Parameter
Input Capacitance
Input/Output Capacitance
Symbol
C
I
C
I/O
Condition
V
IN
= 0 V
V
I/O
= 0 V
Min.
—
—
Max.
6
8
Unit
pF
pF
Note:
This parameter is periodically sampled and not 100% tested.
4/11
¡ Semiconductor
DC Characteristics
MSM521008
(V
CC
= 5 V ±10%, Ta = 0°C to 70°C)
Parameter
Input Leakage Current
Output Leakage Current
Output High Voltage
Output Low Voltage
Symbol
I
LI
I
LO
V
OH
V
OL
Condition
V
IN
= 0 to V
CC
CE
1
= V
IH
or CE
2
= V
IL
or
OE
= V
IH
or
WE
= V
IL
,
V
OUT
= 0 to V
CC
I
OH
= –4.0 mA
I
OL
= 8.0 mA
CE
1
≥
V
CC
– 0.2 V,
CE
2
≥
V
CC
– 0.2 V or
0 V
£
CE
2
£
0.2 V,
V
IN
£
0.2 V or
V
IN
≥
V
CC
– 0.2 V
CE
1
= V
IH
, CE
2
= V
IL
,
T
CYC
= Min. cycle
CE
1
= V
IL
, CE
2
= V
IH
,
T
CYC
= Min. cycle,
I
OUT
= 0 mA
MSM521008
Typ.
Min.
Max.
–10
–10
2.4
—
—
—
—
—
10
10
—
0.4
Unit
mA
mA
V
V
Standby Power
Supply Current
I
CCS
—
—
1
mA
I
CCS1
Operating Power
Supply Current
—
—
20
mA
I
CCA
—
—
q
mA
180 mA
170 mA
160 mA
q
521008-17
521008-20
521008-25
AC Characteristics
Test Conditions
Parameter
Input Pulse Level
Input Rise and Fall Times
Input/Output Timing Level
Output Load
Condition
V
IH
= 3 V, V
IL
= 0 V
3 ns
1.5 V
See Figures
5V
480
W
D
OUT
255
W
30 pF
(Including scope and jig)
D
OUT
255
W
5V
480
W
5 pF
(Including scope and jig)
Figure 1 Output Load
Figure 2 Output Load
(t
OLZ
, t
OHZ
, t
CLZ1
, t
CLZ2
, t
CHZ1
, t
CHZ2
, t
WLZ
, t
WHZ
)
5/11
