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The MSM27C402CZ is a 4Mbit electrically Programmable Read-Only Memory whose configuration
can be electrically switched between 262,144 word x 16bit and 524,288 word x 8bit. The MSM27C40
2CZ operates on a single +3.3V - 5V power supply and is TTL compatible. Since the MSM27C402
CZ operates asynchronously , external clocks are not required , making this device easy-to-use. The
MSM27C402CZ is suitable as large-capacity fixed memory for microcomputers and data terminals. It
is manufactured using a CMOS double silicon gate technology and is offered in 40-pin DIP , 40-pin
SOP or 44-pin TSOP packages.
1A
MSM27C402CZ
262,144-Word x 16-Bit or 524,288-Word x 8-Bit One Time PROM
DESCRIPTION
FEATURES
• 262,144 word x 16bit / 524,288 word x 8bit electrically switchable configuration
• Single +3.3V - 5V power supply
• Access time 120ns (Vcc=3.3V)
80ns (Vcc=5V)
• Input / Output TTL compatible
• Three-state output
• Packages 40-pin plastic DIP (DIP40-P-600-2.54)
40-pin plastic SOP (SOP40-P-525-1.27-K)
44-pin plastic TSOP (TSOP II 44-P-400-0.80-K)
Semiconductor
2
PIN CONFIGURATION (TOP VIEW)
MSM27C402CZ
PIN NAMES
FUNCTIONS
D15/A-1
Data output / Address input
A0 - A17
Address input
D0 - D14
Data output
CE
OE
Output enable
V
CC
Power supply voltage
BYTE/V
PP
Mode switch / Program power supply voltage
NC
Non connection
Chip enable
V
SS
GND
40-pin SOP
44-pin TSOP
40-pin DIP
43
NC
A8
A9
A11
A12
A13
A14
A15
A16
V
SS
D15/A-1
D7
D14
D6
D13
D5
D12
D4
V
CC
A10
42
41
40
2
3
4
5
39
38
37
36
6
7
8
9
35
34
33
32
10
11
12
13
31
30
29
28
14
15
16
17
27
26
25
24
18
19
20
21
23
22
NC
A17
A7
A6
A5
A4
A3
A2
A1
A0
CE
V
SS
OE
D0
D8
D1
D9
D2
D10
D3
D11
44
NC 1
BYTE/Vpp
NC
A8
A9
A11
A12
A13
A14
A15
A16
V
SS
D15/A-1
D7
D14
D6
D13
D5
D12
D4
V
CC
A10
40
2
3
4
5
39
38
37
36
6
7
8
9
35
34
33
32
10
11
12
13
31
30
29
28
14
15
16
17
27
26
25
24
18
19
20
23
A17
A7
A6
A5
A4
A3
A2
A1
A0
CE
V
SS
OE
D0
D8
D1
D9
D2
D10
D3
D11
1
BYTE/Vpp
22
21
A8
A9
A11
A12
A13
A14
A15
A16
V
SS
D15/A-1
D7
D14
D6
D13
D5
D12
D4
V
CC
A10
40
2
3
4
5
39
38
37
36
6
7
8
9
35
34
33
32
10
11
12
13
31
30
29
28
14
15
16
17
27
26
25
24
18
19
20
23
A17
A7
A6
A5
A4
A3
A2
A1
A0
CE
V
SS
OE
D0
D8
D1
D9
D2
D10
D3
D11
1
BYTE/Vpp
22
21
3
BLOCK DIAGRAM
D0
CE
BYTE/V
PP
OE
CE
PGM
OE
Address Buffer
Row Decoder
Column Decoder
Memory Matrix
Multiplexer
Output Buffer
FUNCTION TABLE
STAND-BY
OUTPUT DISABLE
READ (8-Bit)
READ (16-Bit)
MODE
D15/A-1
CE
OE
V
CC
L
L
D
OUT
L
L
L/H
L
H
L
*
H
*
H
L
* : Don't Care
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
A17
D1
D2
D3
D4
D5
D6
D7
D8
D9
D10
D11
D12
D13
D14
D15
X8/X16 Switch
A-1
In 8-bit output mode, these pins are
three-stated and pin D15 functions
as the A-1 address pin.
3.0V
to
5.5V
D8 - D14
D0 - D7
H
L
D
OUT
Hi-Z
H
Hi-Z
*
Hi-Z
PROGRAM
L
H
D
IN
PROGRAM INHIBIT
H
H
Hi-Z
PROGRAM VERIFY
H
L
D
OUT
11.5V
6.25V
MSM27C402CZ
BYTE/V
PP
262,144X16-Bit or 524,288X8-Bit
4
Operating temperature under bias
Storage temperature
Input voltage
Output voltage
Power supply voltage
Program power supply voltage
Power dissipation per package
Parameter
Symbol
Topr
Unit
Value
Condition
RECOMMENDED OPERATING CONDITIONS FOR READ
V
CC
power supply voltage
V
PP
power supply voltage
Input "H" level
Input "L" level
Parameter
Symbol
V
CC
Unit
5.5
Typ.
3.0
Condition
T
stg
V
I
V
O
V
CC
V
PP
P
D
0 to 70
-55 to 125
V
-0.5 to V
CC
+ 0.5
V
-0.5 to V
CC
+ 0.5
V
-0.5 to 7
V
-0.5 to 12.5
W
1.0
-
relative to V
SS
(Ta=0 to 70
°
C)
Min.
Max.
V
V
CC
+0.5
-0.5
-
V
V
CC
+0.5
2.2
-
V
0.6
-0.5
-
V
V
PP
V
IH
V
IL
V
CC
=3.0V - 5.5V
Voltage is relative to Vss
ABSOLUTE MAXIMUM RATINGS
-
-
MSM27C402CZ
°
C
°
C
DC Characteristics 2
0.45
-
Input leakage current
Output leakage current
V
CC
power supply current
(Standby)
V
CC
power supply current
(Read)
V
PP
power supply current
Parameter
Symbol
Unit
Condition
(V
CC
=5V
±
0.5V, Ta=0 to 70
°
C)
Input "H" level
Input "L" level
Output "H" level
Output "L" level
Voltage is relative to Vss
10
Typ.
-
Min.
Max.
I
LO
I
CS1
I
CS2
I
CCA
µ
A
-
10
-
µ
A
-
50
-
µ
A
-
CE=V
CC
1
-
CE=V
IH
70
-
mA
tc=80ns
-
-
I
PP
V
IH
V
IL
V
OH
V
OL
10
µ
A
V
PP
=V
CC
V
CC
+0.5
2.2
V
-
0.8
-0.5
V
-
-
V
I
OH
=-400
µ
A
-
V
I
OL
=2.1mA
-
-
-
CE=V
IL ,
OE=V
IH
V
I
=0 to Vcc
V
O
=0 to Vcc
mA
-
I
LI
-
2.4
5
ELECTRICAL CHARACTERISTICS (Read operation)
DC Characteristics 1
MSM27C402CZ
0.4
-
Input leakage current
Output leakage current
V
CC
power supply current
(Standby)
V
CC
power supply current
(Read)
V
PP
power supply current
Parameter
Symbol
Unit
Condition
(V
CC
=3.3V
±
0.3V, Ta=0 to 70
°
C)
Input "H" level
Input "L" level
Output "H" level
Output "L" level
Voltage is relative to Vss
10
Typ.
-
Min.
Max.
I
LO
I
CS1
I
CS2
I
CCA
µ
A
-
10
-
µ
A
-
10
-
µ
A
-
CE=V
CC
1
-
CE=V
IH
40
-
mA
tc=120ns
-
-
I
PP
V
IH
V
IL
V
OH
V
OL
10
µ
A
V
PP
=V
CC
V
CC
+0.5
2.0
V
-
0.6
-0.5
V
-
-
V
I
OH
=-200
µ
A
-
V
I
OL
=1mA
-
-
-
CE=V
IL ,
OE=V
IH
V
I
=0 to Vcc
V
O
=0 to Vcc
mA
-
I
LI
-
V
CC
-0.4
6
MSM27C402CZ
ns
AC Characteristics 1
Address access time
CE access time
OE access time
Output disable time
Parameter
Symbol
T
ACC
Unit
Condition
(V
CC
=3.3V
±
0.3V, Ta=0 to 70
°
C)
Min.
Max.
T
CE
ns
CE=OE=V
IL
-
ns
70
-
ns
60
0
ns
55
0
ns
-
0
T
OE
T
OH
Output hold time
120
120
T
CHZ
T
OHZ
Access cycle time
T
C
120
ns
-
-
OE=V
IL
CE=V
IL
OE=V
IL
CE=V
IL
CE=OE=V
IL
-
400
100pF (including jig capacitance)
1.7V
Output
0V/3V
0.8V/2.0V
1TTL gate + 100pF
0.8V/2.0V
Measurement conditions
Input signal level
Input timing reference level
Output load
Output timing reference level
ns
AC Characteristics 2
Address access time
CE access time
OE access time
Output disable time
Parameter
Symbol
T
ACC
Unit
Condition
(V
CC
=5V
±
0.5V, Ta=0 to 70
°
C)
Min.
Max.
T
CE
ns
CE=OE=V
IL
-
ns
50
-
ns
40
0
ns
35
0
ns
-
0
T
OE
T
OH
Output hold time
80
80
T
CHZ
T
OHZ
Access cycle time
T
C
80
ns
-
-
OE=V
IL
CE=V
IL
OE=V
IL
CE=V
IL
CE=OE=V
IL
-
400
100pF (including jig capacitance)
1.7V
Output
0V/3V
0.8V/2.0V
100pF
0.8V/2.0V
Measurement conditions
Input signal level
Input timing reference level
Output load
Output timing reference level
7
MSM27C402CZ
TIMING CHART (READ CYCLE)
A0 - A17
t
OH
t
CE
t
CHZ
t
OE
t
OHZ
t
ACC
CE
OE
Valid Data
Hi-Z
Hi-Z
D0 - D15
16-Bit Read Mode (BYTE=V
IH
)
t
C
A-1 - A17
t
OH
t
CE
t
CHZ
t
OE
t
OHZ
t
ACC
CE
OE
Valid Data
Hi-Z
Hi-Z
D0 - D7
8-Bit Read Mode (BYTE=V
IL
)
t
C
Hi-Z
D8 - D14
MSM27C402CZ
8
ELECTRICAL CHARACTERISTICS (Programming operation)
DC Characteristics
Input leakage current
V
PP
power supply current (Program)
V
CC
power supply current
Parameter
Symbol
I
LI
Unit
10
Typ.
-
Condition
(Ta=25
°
C
±
5
°
C)
Min.
Max.
Input "L" level
I
PP2
I
CC
V
IH
V
IL
µ
A
-
V
I
=V
CC
+0.5V
50
-
mA
-
CE=V
IL
80
-
mA
-
-
V
CC
+0.5
2.2
V
-
0.8
-0.5
V
-
-
11.5
-
Voltage is relative to Vss
Input "H" level
V
OH
-
2.4
V
I
OH
=-400
µ
A
-
Output "H" level
V
OL
0.45
-
V
I
OL
=2.1mA
-
Output "L" level
V
PP
11.75
11.25
V
-
Program voltage
V
CC
power supply voltage
V
CC
6.5
6.0
V
6.25
-
AC Characteristics
Address set-up time
OE set-up time
Data set-up time
Parameter
Symbol
T
AS
Unit
-
Typ.
2
Condition
Min.
Max.
Data hold time
T
OES
T
DS
T
AH
T
DH
µ
s
-
-
2
µ
s
-
-
2
µ
s
-
-
-
0
µ
s
-
-
2
µ
s
-
-
-
Address hold time
T
DFP
130
0
ns
-
Output float delay from OE
T
VS
-
2
µ
s
-
V
PP
voltage set-up time
Program pulse width
T
PW
27
23
µ
s
25
-
Data valid from OE
T
OE
150
-
ns
-
-
-
-
-
-
(Vcc=6.25V
±
0.25V,Vpp=11.5V
±
0.25V,Ta=25
°
C
±
5
°
C)
9
MSM27C402CZ
A0 - A17
CE
D0 - D15
Programming Waveform
OE
BYTE/V
PP
PIN Capacitance
Input
BYTE/V
PP
Parameter
C
IN1
Unit
12
Typ.
-
(V
CC
=5V, Ta=25
°
C, f=1MHz)
Min.
Max.
C
IN2
pF
-
V
I
=0V
60
-
-
Output
C
OUT
15
-
-
V
O
=0V
Symbol
Condition
t
AS
t
PW
t
AH
t
OES
t
DFP
t
DS
t
DH
t
OE
t
VS
Program
Program Verify
D
IN
D
OUT
