Semiconductor
MSM531652F
1,048,576-Words x 16-bit or 2,097,152-Bytes x 8-bit MaskROM
16Words x 16-Bit or 32Bytes x 8-Bit/Page Mode MASKROM
DESCRIPTION
The OKI MSM531652F is a 1,048,576-words x 16-bit or 2,097,152-bytes x 8-bit CMOS
Mask ROM with an asynchronous page read mode. Each page is organized 16 words x 16-
bit or 32bytes x 8-bit. It 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 MSM531652F is suited for use as large capacity fixed memory for
microcomputers and data terminals.
FEATURES
Single 5.0V power supply
1,048,576 words x 16-bit / 2,097,152-bytes x 8-bit
16- words(A3,A2,A1,A0) or 32-bytes(A3,A2,A1,A0,A-1) / Page
Access time
100ns Max (Normal access)
50ns Max (Page access)
Input/Output TTL compatible
Tri-State output configurations
Internal powerdown function
Packages:
42-PIN PLASTIC DIP (DIP42-P-600-2.45)
44-PIN PLASTIC SOP (SOP44-P-600-1.27-K)
48-PIN PLASTIC TSOP (TSOPII48-P-550-0.80-K)
1
MSM531652F
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
31 V
SS
A18 2
A17 3
A7 4
A6 5
A5 6
A4 7
A3 8
A2 9
A1 10
A0 11
CE 12
V
SS
13
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
30 D15/A-1 OE 14
29 D7
D0 15
28 D14
27 D6
26 D13
25 D5
24 D12
23 D4
22 V
CC
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
Function
Data output / address input
Address input
Data output
Chip enable
Output enable
Mode switch
Power supply
2
MSM531652F
BLOCK DIAGRAM
V
CC
V
SS
A-1
BYTE
Output Switching Between 8 and 16 bits
CE
OE
CE
OE
Control
A19
A18
A17
A16
A15
A14
A13
A12
A11
A10
A9
A8
A7
A6
A5
A4
A3
A2
A1
A0
Memory Cell
Matrix
1,048,576-Word x 16 or 2,097,152 x 8
X
Decoder
Address
Buffer
Multiplexer & Page Data Latch
Y
Decoder
D0
D1
D2
D3
D4
D5
Output Buffer
D6
D7
D8
D10 D12 D14
D9 D11 D13 D15
FUNCTION TABLE
CE
H
L
L
L
L
L
L
L
OE
X
H
L
L
L
L
L
L
BYTE
X
X
H
H
L
L
L
L
A-1/D15
X
X
Input Inhibited (D15)
Input Inhibited (D15)
D0—D7
Hi-Z
Hi-Z
D0 to D7
D0 to D7
D0 to D7
D8 to D15
D0 to D7
D8 to D15
D8—D15
Hi-Z
Hi-Z
D8 to D15
D8 to D15
Hi-Z
Hi-Z
Hi-Z
Hi-Z
DOUT Mode
Hi-Z
16 bit
16 bit(Page Mode)
8 bit
8 bit(Page Mode)
LSB
—
A0
A0
A-1
A-1
MSB
—
A19
A3
A19
A3
L
H
L
H
3
MSM531652F
ABSOLUTE MAXIMUM LIMITS
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
—
—
to V
SS
Conditions
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
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.
4.5
0.0
2.2
–0.3
0
Typ.
5.0
0.0
5.0
0.0
—
Max.
5.5
0.0
5.5
0.8
70
Unit
V
V
V
V
°C
DC CHARACTERISTICS
(V
CC
= 5V±10%, 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
OH
V
OL
I
LI
I
LO
I
CC
I
CCS1
I
CCS
Conditions
I
OH
= –400uA
I
OH
= 2.1mA
V
I
= 0 to V
CC
V
O
= 0 to V
CC
CE = V
IH MIN
CE = V
IL,
OE = V
IH,
t
C
= 100ns
CE = V
CC
–0.2V
CE = V
IH MIN
Limits
Min.
2.4
—
–10
–10
—
—
—
Typ.
—
—
—
—
—
—
—
Max.
—
0.4
10
10
100
50
500
Unit
V
V
µA
µA
mA
µA
µA
4
MSM531652F
AC CHARACTERISTICS
Test conditions
Parameter
Input Signal Level
Transtion Time
Timing Reference Level
Load Condition
Conditions
V
IH
=3.0V, V
IL
=0.0V
tr=tf=5ns
Input Voltage=1.5V
Output Voltage=0.8V&2.0V
CL=100pF+1TTL
Read Cycle
(Ta = 0 to 70°C)
Parameter
Random Access Cycle time
Random Address Access time
Page Set up time
Page Access Cycle time
Page Access time
CE Access time
OE Access time
CE Output Disable time
OE Output Disable time
Output Hold time
Symbol
t
C
t
ACC
t
PSET
t
PC
t
PAC
t
CE
t
OE
t
CHZ
t
OHZ
t
OH
Conditions
—
—
—
—
—
—
—
—
—
—
Limits
Min.
100
—
120
50
—
—
—
0
0
0
Typ.
—
—
—
—
—
—
—
—
—
—
Max.
—
100
—
—
50
100
50
40
30
—
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Read Cycle (Note1)
t
C
Address
t
ACC
OE
t
OE
D
OUT
t
OH
5
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