M27C256B-90F6 STMicroelectronics, M27C256B-90F6 Datasheet - Page 2

IC EPROM 256KBIT 90NS 28CDIP

M27C256B-90F6

Manufacturer Part Number
M27C256B-90F6
Description
IC EPROM 256KBIT 90NS 28CDIP
Manufacturer
STMicroelectronics
Datasheet

Specifications of M27C256B-90F6

Format - Memory
EPROMs
Memory Type
UV EPROM
Memory Size
256K (32K x 8)
Speed
90ns
Interface
Parallel
Voltage - Supply
4.5 V ~ 5.5 V
Operating Temperature
-40°C ~ 85°C
Package / Case
28-CDIP (0.600", 15.24mm) Window
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
497-1656-5

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Part Number
Manufacturer
Quantity
Price
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M27C256B-90F6
Manufacturer:
ST
Quantity:
4 980
Part Number:
M27C256B-90F6
Manufacturer:
ST
Quantity:
4 980
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M27C256B-90F6
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Part Number:
M27C256B-90F6
Manufacturer:
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0
Part Number:
M27C256B-90F6
Manufacturer:
ST
Quantity:
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Contents
Contents
1
2
3
4
5
6
7
2/24
Summary description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Device operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.8
2.9
2.10
Maximum rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
DC and AC parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Package mechanical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Part numbering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Read mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Standby mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Two-line output control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
System considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
PRESTO II programming algorithm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Program inhibit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Program Verify . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Electronic signature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Erasure operation (applies for UV EPROM) . . . . . . . . . . . . . . . . . . . . . . . 11
M27C256B

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