Semiconductor
MSM531632E
1,048,576-Word x 16-Bit or 2,097,152-Word x 8-Bit MASKROM
DESCRIPTION
The OKI MSM531632E is a high-speed CMOS Mask ROM that can electrically switch
between 1,048,576-word x 16-bit or 2,097,152-word x 8-bit configurations. The MSM531622E
operates on a single 5.0V power supply and is TTL compatible. The chip's asynchronous I/O
requires no external clock assuring easy operation. A power-down mode provides low power
dissipation when the chip is not selected. The CE and OE pins are provided as control
signals that permit three-stated output allowing easy memory expansion on a system bus.The
MSM531622E is suited for use as large capacity fixed memory for microcomputers and data
terminals.
FEATURES
3.0V or 3.3V single power supply
1,048,576-word x 16-bit / 2,097,152-word x 8-bit
Access Time - Current Consumption
200ns - 20mA (When power supply is 3.0V±0.3V)
150ns - 30mA (When power supply is 3.3V±0.3V)
Tri-state output configurations
Internal powerdown function
Package:
42-PIN PLASTIC DIP
(DIP42-P-600)
(MSM531632E-xxRS)
44-PIN PLASTIC SOP (SOP44-P-600-K) (MSM531632E-xxGS-K)
48-PIN PLASTIC TSOP (TSOP48-P-550-K) (MSM531632E-xxTS-K)
16MEPROM (42-PIN) pin compatible
1
MSM531632E
PIN CONFIGURATION
NC 1
NC 2
NC 1
A18 1
A17 2
A7 3
A6 4
A5 5
A4 6
A3 7
A2 8
A1 9
A0 10
CE 11
V
SS
12
OE 13
D0 14
D8 15
D1 16
D9 17
D2 18
D10 19
D3 20
D11 21
42 PIN DIP
42 A19
41 A8
40 A9
39 A10
38 A11
37 A12
36 A13
35 A14
34 A15
33 A16
32 BYTE
A18 2
A17 3
A7 4
A6 5
A5 6
A4 7
A3 8
A2 9
A1 10
A0 11
CE 12
44 NC
43 A19
42 A8
41 A9
40 A10
39 A11
38 A12
37 A13
36 A14
35 A15
34 A16
33 BYTE
32 V
SS
30 D7
29 D14
28 D6
27 D13
26 D5
25 D12
24 D4
23 V
CC
44 PIN SOP
NC 3
A18 4
A17 5
A7 6
A6 7
A5 8
A4 9
A3 10
A2 11
A1 12
A0 13
CE 14
V
SS
15
D0 17
D8 18
D1 19
D9 20
D2 21
D10 22
D3 23
D11 24
48 NC
47 NC
46 NC
45 A19
44 A8
43 A9
42 A10
41 A11
40 A12
39 A13
38 A14
37 A15
36 A16
35 BYTE
34 V
SS
33 D15/A-1
32 D7
31 D14
30 D6
29 D13
28 D5
27 D12
26 D4
25 V
CC
31 V
SS
V
SS
13
30 D15/A-1 OE 14
29 D7
28 D14
27 D6
26 D13
25 D5
24 D12
23 D4
22 V
CC
D0 15
D8 16
D1 17
D9 18
D2 19
D10 20
D3 21
D11 22
31 D15/A-1 OE 16
48 PIN TSOP
Pin Name
D15/A-1
A0 to A19
D0 to D15
CE
OE
BYTE
V
CC
, V
SS
NC
Function
Data output / address input
Address input
Data output
Chip enable
Output enable
Mode switch
Power supply
No Connect
2
MSM531632E
BLOCK DIAGRAM
V
CC
V
SS
A-1
BYTE
Output Switching Between 8 and 16 bits
CE
OE
CE
OE
Control
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
A17
A18
A19
X
Decoder
Memory Cell
Matrix
1,048,576-Word x 16 or 2,097,152 x 8
Address
Buffer
Multiplexer
Y
Decoder
Output Buffer
D0
D1
D2
D3
D4
D5
D6
D7
D8
D10 D12 D14
D9 D11 D13 D15
FUNCTION TABLE
CE
H
L
L
L
L
OE
X
H
L
L
L
BYTE
X
X
H
L
L
A-1/D15
X
X
Input Inhibited (D15)
D0 to D7
Hi-Z
Hi-Z
D0 to D7
D0 to D7
D8 to D15
D8 to D15
Hi-Z
Hi-Z
D8 to D15
Hi-Z
Hi-Z
DOUT Mode
Hi-Z
16 bit
8 bit
LSB
—
A0
A-1
MSB
—
A19
A19
L
H
3
MSM531632E
ELECTRICAL CHARACTERISTICS
Absolute Maximum Ratings
Parameter
Power Supply Voltage
Input Voltage
Output Voltage
Power Dissipation
Operating Temperature
Storage Temperature
Symbol
V
CC
V
I
V
O
P
D
T
opr
T
stg
Per Package T
opr
=25°C
Conditions
to V
SS
Limits
–0.3 to 7
–0.3 to V
CC
+0.5
–0.3 to V
CC
+0.5
1.0
0 to 70
–55 to 150
Unit
V
V
V
W
°C
°C
Recommended Operating Conditions (V CC=3.0V)
Parameter
Power Supply Voltage
"H" Input Voltage
"L" Input Voltage
Operating Temperature
Symbol
V
CC
V
SS
V
IH
V
IL
T
opr
Conditions
—
—
—
—
—
Limits
Min.
2.7
0.0
2.0
–0.3
0
Typ.
3.0
0.0
3.0
0.0
—
Max.
3.3
0.0
6.0
0.8
70
Unit
V
V
V
V
°C
Recommended Operating Conditions (V CC=3.0V)
Parameter
Power Supply Voltage
"H" Input Voltage
"L" Input Voltage
Operating Temperature
Symbol
V
CC
V
SS
V
IH
V
IL
T
opr
Conditions
—
—
—
—
—
Limits
Min.
3.0
0.0
2.0
–0.3
0
Typ.
3.3
0.0
3.3
0.0
—
Max.
3.6
0.0
6.0
0.6
70
Unit
V
V
V
V
°C
4
MSM531632E
DC CHARACTERISTICS (V CC=3.0V±0.3V)
( Ta = 0 to 70°C)
Parameter
"H" Output Voltage
"L" Output Voltage
Input Leakage Current
Output Leakage Current
Power Supply Current
(Operating)
Power Supply Current
(Standby)
Symbol
V
OH1
V
OH2
V
OL1
V
OL2
I
LI
I
LO
I
CC
I
CCSC
I
CCST
Conditions
I
OH
= –100uA
I
OH
= –400uA
I
OL
= 100uA
I
OI
= 1.0mA
V
I
= 0 to V
CC
V
O
= 0 to V
CC
CE = V
IH MIN
CE = V
IL
,
OE = V
IH,
t
C
= 200ns
CE = V
CC
–0.2V
CE = V
IH MIN
Limits
Min.
Typ.
V
CC
– 0.1
—
V
CC
– 0.4
—
—
–10
–10
—
—
—
—
—
—
—
—
—
—
—
Max.
—
—
0.1
0.4
10
10
20
10
50
Unit
V
V
V
V
uA
uA
mA
uA
uA
DC CHARACTERISTICS (V CC=3.3V±0.3V)
Parameter
"H" Output Voltage
"L" Output Voltage
Input Leakage Current
Output Leakage Current
Power Supply Current
(Operating)
Power Supply Current
(Standby)
Symbol
V
OH1
V
OH2
V
OL1
V
OL2
I
LI
I
LO
I
CC
I
CCSC
I
CCST
Conditions
I
OH
= –100uA
I
OH
= –400uA
I
OL
= 100uA
I
OI
= 1.0mA
V
I
= 0 to V
CC
V
O
= 0 to V
CC
CE = V
IH MIN
CE = V
IL,
OE = V
IH,
t
C
= 150ns
CE = V
CC
–0.2V
CE = V
IH MIN
(V
CC
= 5V±10%, Ta = 0 to 70°C)
Limits
Min.
Typ.
—
V
CC
– 0.1
V
CC
– 0.4
—
—
–10
–10
—
—
—
—
—
—
—
—
—
—
—
Max.
—
—
0.1
0.4
10
10
30
10
50
Unit
V
V
V
V
uA
uA
mA
uA
uA
5
嵌入式系统