NM27C256 Fairchild, NM27C256 Datasheet - Page 2

• Manufacturer Part Number: NM27C256
• Description: 262 /144-Bit (32K x 8) High Performance CMOS EPROM
• Manufacturer: Fairchild

Connection Diagrams
Note: Surface mount PLCC package available for commercial and extended
temperature ranges only.
Package Types: NM27C256 Q, N, V XXX
• All Packages conform to the JEDEC standard.
• All versions are guaranteed to function for slower speeds.
Parameter/Order Number
Parameter/Order Number
Commercial Temp. Range (0 C to +70 C)
NM27C256 QE, NE, VE 120
NM27C256 QE, NE, VE 150
NM27C256 QE, NE, VE 200
Extended Temp. Range (-40 C to +85 C)
Q = Quartz-Windowed Ceramic DIP
N = Plastic OTP DIP
V = Surface-Mount PLCC
NM27C256 Q, N, V 100
NM27C256 Q, N, V 120
NM27C256 Q, N, V 150
NM27C256 Q, N, V 200
NM27C256 Q, N, V 90
27C080 27C040
GND
A 19
A 16
A 15
A 12
A 7
A 6
A 5
A 4
A 3
A 2
A 1
A 0
O 0
O 1
O 2
XX/V PP
GND
A 16
A 15
A 12
A 7
A 6
A 5
A 4
A 3
A 2
A 1
A 0
O 0
O 1
O 2
V
V
XX/V PP
CC
CC
27C020
GND
A 16
A 15
A 12
O 0
O 1
O 2
A 7
A 6
A 5
A 4
A 3
A 2
A 1
A 0
Note: Compatible EPROM pin configurations are shown in the blocks adjacent to the NM27C256 pins.
= 5V 10%
= 5V 10%
XX/V PP
27C010
GND
A 16
A 15
A 12
O 0
O 1
O 2
A 7
A 6
A 5
A 4
A 3
A 2
A 1
A 0
Access Time (ns)
Access Time (ns)
27C512
GND
A 15
A 12
O 0
O 1
O 2
A 7
A 6
A 5
A 4
A 3
A 2
A 1
A 0
GND
V
A 12
100
120
150
200
120
150
200
O 0
O 1
O 2
A 7
A 6
A 5
A 4
A 3
A 2
A 1
A 0
PP
90
NM27C256
1
2
3
4
5
6
7
8
9
10
11
12
13
14
DlP
28
27
26
25
24
23
22
21
20
19
18
17
16
15
2
V
A 14
A 13
A 8
A 9
A 11
OE
A 10
CE/PGM
O 7
O 6
O 5
O 4
O 3
CC
Symbol
CE/PGM
XX
O
A0–A14
A
A
A
A
A
A
A
O0–O7
6
5
4
3
2
1
0
0
OE
XX
CE/PGM
OE/V PP
27C512
V CC
A 14
A 13
A 11
A 10
O 7
O 6
O 5
O 4
O 3
A 8
A 9
5
6
7
8
9
10
11
12
13
14 15 16 17 18 19 20
XX/PGM
4
27C010
V CC
A 14
A 13
A 11
A 10
OE
XX
CE
O 7
O 6
O 5
O 4
O 3
A 8
A 9
3
Pin Names
Addresses
Chip Enable/Program
Output Enable
Outputs
Don’t Care (during Read)
2
PLCC
XX/PGM
Top
27C020
V CC
1 32 31 30
A 17
A 14
A 13
A 11
A 10
OE
CE
O 7
O 6
O 5
O 4
O 3
A 8
A 9
Description
CE/PGM
27C040
V CC
A 18
A 17
A 14
A 13
A 11
A 10
OE
A 8
A 9
O 7
O 6
O 5
O 4
O 3
29
28
27
26
25
24
23
22
21
CE/PGM
www.fairchildsemi.com
OE/V PP
27C080
V CC
A 18
A 17
A 14
A 13
A 11
A 10
A 8
A 9
O 7
O 6
O 5
O 4
O 3
A
A
A
XX
OE
A
CE/PGM
O
O
8
9
11
10
7
6
DS010833-2
DS010833-3