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M27C256B-10C6TR 数据手册 - ST Microelectronics(意法半导体)
制造商:
ST Microelectronics(意法半导体)
分类:
存储芯片
封装:
PLCC-32
描述:
256千位(32KB × 8 ) UV EPROM和OTP EPROM 256 Kbit (32Kb 】 8) UV EPROM and OTP EPROM
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M27C256B-10C6TR数据手册
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1/16August 2002
M27C256B
256 Kbit (32Kb x 8) UV EPROM and OTP EPROM
■ 5V ± 10% SUPPLY VOLTAGE in READ
OPERATION
■ ACCESS TIME: 45ns
■ LOW POWER CONSUMPTION:
– Active Current 30mA at 5MHz
– Standby Current 100µA
■ PROGRAMMING VOLTAGE: 12.75V ± 0.25V
■ PROGRAMMING TIME: 100µs/word
■ ELECTRONIC SIGNATURE
– Manufacturer Code: 20h
– Device Code: 8Dh
DESCRIPTION
The M27C256B is a 256 Kbit EPROM offered in
the two ranges UV (ultra violet erase) and OTP
(one time programmable). It is ideally suited for mi-
croprocessor systems and is organized as 32,768
by 8 bits.
The FDIP28W (window ceramic frit-seal package)
has a transparent lid which allows the user to ex-
pose the chip to ultraviolet light to erase the bit pat-
tern. A new pattern can then be written to the
device by following the programming procedure.
For applications where the content is programmed
only one time and erasure is not required, the
M27C256B is offered in PDIP28, PLCC32 and
TSOP28 (8 x 13.4 mm) packages.
Figure 1. Logic Diagram
AI00755B
15
A0-A14 Q0-Q7
V
PP
V
CC
M27C256B
G
E
V
SS
8
1
28
28
1
FDIP28W (F) PDIP28 (B)
PLCC32 (C) TSOP28 (N)
8 x 13.4 mm
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