Home datasheet M27C256B-70XF7X

M27C256B-70XF7X

256 Kbit (32Kb x 8) UV EPROM and OTP EPROM
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DESCRIPTION
TheM27C256Bis a 256 KbitEPROMofferedin 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 PDIP32, PLCC32 and TSOP28 (8 x 13.4 mm) packages.

■ 5V ± 10% SUPPLY VOLTAGE in READ OPERATION
■ FAST ACCESS TIME: 45ns
■ LOW POWER CONSUMPTION:
   – Active Current 30mA at 5MHz
   – StandbyCurrent 100µA
■ PROGRAMMING VOLTAGE: 12.75V ± 0.25V
■ PROGRAMMING TIME: 100µs/byte (PRESTO II ALGORITHM)
■ ELECTRONIC SIGNATURE
   – Manufacturer Code: 20h
   – Device Code: 8Dh

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Manufacturer information

STMICROELECTRONICS

STMicroelectronics is a global independent semiconductor company and is a leader in developing and delivering semiconductor solutions across the spectrum of microelectronics applications. An unrivaled combination of silicon and system expertise, manufacturing strength, Intellectual Property (IP) portfolio and strategic partners positions the Company at the forefront of System-on-Chip (SoC) technology and its products play a key role in enabling today's convergence trends

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