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M27C256 Datasheet PDF

Part Series:
M27C256 Series
Category:
Memory Chip
Description:
EPROM UV 256Kbit 32K x 8 120ns 28Pin CFDIPWB
Updated Time: 2023/01/13 02:36:40 (UTC + 8)

M27C256 Memory Chip Datasheet PDF

M27C256 Datasheet PDF Memory Chip

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M27C256B-12F1 - ST Microelectronics Specifications

TYPE
DESCRIPTION
Mounting Style
Through Hole
Number of Pins
28 Pin
Supply Voltage (DC)
5.00 V, 5.50 V (max)
Operating Voltage
5 V
Case/Package
CDIP-28
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M27C256B-12F1 - ST Microelectronics Function Overview

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 microprocessor 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 expose the chip to ultraviolet light to erase the bit pattern. 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.
■ 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
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