Connection Diagrams
27C080 27C040 27C020 27C010 27C512
A19
XX/V
PP
XX/V
PP
XX/V
PP
A16
A16
A16
A16
A15
A15
A15
A15
A15
A12
A12
A12
A12
A12
A7
A7
A7
A7
A7
A6
A6
A6
A6
A6
A5
A5
A5
A5
A5
A4
A4
A4
A4
A4
A3
A3
A3
A3
A3
A2
A2
A2
A2
A2
A1
A1
A1
A1
A1
A0
A0
A0
A0
A0
O0
O0
O0
O0
O0
O1
O1
O1
O1
O1
O2
O2
O2
O2
O2
GND
GND
GND
GND
GND
DIP
NM27C256
TL/D/10833–2
27C512 27C010 27C020 27C040 27C080
V
CC
V
CC
V
CC
A18
V
CC
A18
XX/PGMXX/PGM
V
CC
A14
XX
A17
A17
A17
A14
A14
A14
A14
A13
A13
A13
A13
A13
A8
A8
A8
A8
A8
A9
A9
A9
A9
A9
A11
A11
A11
A11
A11
OE/V
PP
A10
OE
OE
OE
OE/V
PP
A10
A10
A10
A10
CE/PGM
CE
CE
CE/PGMCE/PGM
O7
O7
O7
O7
O7
O6
O6
O6
O6
O6
O5
O5
O5
O5
O5
O4
O4
O4
O4
O4
O3
O3
O3
O3
O3
Note:
Compatible EPROM pin configurations are shown in the blocks adjacent to the NM27C256 pins.
Commercial Temp. Range (0
§
C to
a
70
§
C)
V
CC
e
5V
g
10%
Parameter/Order Number
Access Time (ns)
NM27C256 Q, N, V 120
120
NM27C256 Q, N, V 150
150
NM27C256 Q, N, V 200
200
Military Temp. Range (
b
55
§
C to
a
125
§
C)
V
CC
e
5V
g
10%
Parameter/Order Number
Access Time (ns)
NM27C256 QM 150
150
NM27C256 QM 250
250
Extended Temp. Range (
b
40
§
C to
a
85
§
C)
V
CC
e
5V
g
10%
Parameter/Order Number
Access Time (ns)
NM27C256 QE, NE, VE 120
120
NM27C256 QE, NE, VE 150
150
NM27C256 QE, NE, VE 200
200
Note:
Surface mount PLCC package available for commercial and extended
temperature ranges only.
Package Types: NM27C256 Q, N, V XXX
Q
e
Quartz-Windowed Ceramic DIP
N
e
Plastic OTP DIP
V
e
Surface-Mount PLCC
#
All packages conform to the JEDEC standard.
#
All versions are guaranteed to function for slower
speeds.
Pin Names
Symbol
Description
A0–A14
Addresses
CE
Chip Enable
OE
Output Enable
O0–O7
Outputs
PGM
Program
XX
Don’t Care (during Read)
PLCC
TL/D/10833–3
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