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NM27C256 View Datasheet(PDF) - Fairchild Semiconductor

Part NameDescriptionManufacturer
NM27C256 262,144-Bit (32K x 8) High Performance CMOS EPROM Fairchild
Fairchild Semiconductor Fairchild
NM27C256 Datasheet PDF : 11 Pages
1 2 3 4 5 6 7 8 9 10
Connection Diagrams
27C080 27C040 27C020 27C010 27C512
A19 XX/VPP XX/VPP XX/VPP
A16 A16 A16 A16
A15 A15 A15 A15 A15 VPP
A12 A12 A12 A12 A12 A12
A7
A7
A7
A7 A7
A7
A6
A6
A6
A6 A6
A6
A5
A5
A5
A5 A5
A5
A4
A4
A4
A4 A4
A4
A3
A3
A3
A3 A3
A3
A2
A2
A2
A2 A2
A2
A1
A1
A1
A1 A1
A1
A0
A0
A0
A0 A0
A0
O0
O0
O0
O0 O0
O0
O1
O1
O1
O1 O1
O1
O2
O2
O2
O2 O2
O2
GND GND GND GND GND GND
DlP
NM27C256
1
28
2
27
3
26
4
25
5
24
6
23
7
22
8
21
9
20
10
19
11
18
12
17
13
16
14
15
27C512 27C010 27C020 27C040 27C080
VCC VCC VCC VCC
XX/PGM XX/PGM A18
A18
VCC
VCC
XX
A17
A17
A17
A14
A14
A14
A14
A14
A14
A13
A13
A13
A13
A13
A13
A8
A8
A8
A8
A8
A8
A9
A9
A9
A9
A9
A9
A11
A11
A11
A11
A11
A11
OE
OE/VPP OE
OE
OE OE/VPP
A10
A10
A10
A10
A10
A10
CE/PGM CE/PGM CE
CE CE/PGM CE/PGM
O7
O7
O7
O7
O7
O7
O6
O6
O6
O6
O6
O6
O5
O5
O5
O5
O5
O5
O4
O4
O4
O4
O4
O4
O3
O3
O3
O3
O3
O3
Note: Compatible EPROM pin configurations are shown in the blocks adjacent to the NM27C256 pins.
DS010833-2
Commercial Temp. Range (0°C to +70°C)
VCC = 5V ±10%
Parameter/Order Number Access Time (ns)
NM27C256 Q, N, V 90
90
NM27C256 Q, N, V 100
100
NM27C256 Q, N, V 120
120
NM27C256 Q, N, V 150
150
NM27C256 Q, N, V 200
200
Extended Temp. Range (-40°C to +85°C)
VCC = 5V ±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 = Quartz-Windowed Ceramic DIP
N = Plastic OTP DIP
V = Surface-Mount PLCC
• All Packages conform to the JEDEC standard.
• All versions are guaranteed to function for slower speeds.
Symbol
A0–A14
CE/PGM
OE
O0–O7
XX
Pin Names
Description
Addresses
Chip Enable/Program
Output Enable
Outputs
Don’t Care (during Read)
PLCC
4 3 2 1 32 31 30
A6
5
29
A8
A5
6
28
A9
A4
7
27
A11
A3
8
26 XX
A2
9
25 OE
A1
10
24
A10
A0
11
23 CE/PGM
XX 12
22
O7
O0
13
21
O6
14 15 16 17 18 19 20
DS010833-3
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