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NM27C256 Datasheet(PDF) 2 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part # NM27C256
Description  262,144-Bit (32K x 8) High Performance CMOS EPROM
Download  12 Pages
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Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

NM27C256 Datasheet(HTML) 2 Page - National Semiconductor (TI)

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Connection Diagrams
27C080 27C040 27C020 27C010 27C512
A19
XXVPP XXVPP XXVPP
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
TLD10833 – 2
27C512 27C010 27C020 27C040 27C080
VCC
VCC
VCC
VCC
XXPGM XXPGM
A18
A18
VCC
XX
A17
A17
A17
A14
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 VPP
OE
OE
OE
OE VPP
A10
A10
A10
A10
A10
CE PGM
CE
CE
CE PGM CE 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 Cto a70 C)
VCC e 5V g10%
ParameterOrder 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 (b55 Cto a125 C)
VCC e 5V g10%
ParameterOrder Number
Access Time (ns)
NM27C256 QM 150
150
NM27C256 QM 250
250
Extended Temp Range (b40 Cto a85 C)
VCC e 5V g10%
ParameterOrder 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
TLD10833 – 3
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2


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