(PDF) M28F256 Datasheet - 256 Kbit Flash Memory

Número de pieza	M28F256
Descripción	256 Kbit Flash Memory
Fabricantes	STMicroelectronics
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No Preview Available ! M28F256 256 Kbit (32Kb x8, Bulk) Flash Memory 5V ±10% SUPPLY VOLTAGE 12V PROGRAMMING VOLTAGE FAST ACCESS TIME: 90ns BYTE PROGRAMING TIME: 10µs typical ELECTRICAL CHIP ERASE in 1s RANGE LOW POWER CONSUMPTION – Stand-by Current: 5µA typical 10,000 ERASE/PROGRAM CYCLES INTEGRATED ERASE/PROGRAM-STOP TIMER 20 YEARS DATA RETENTION – Defectivity below 1ppm/year ELECTRONIC SIGNATURE – Manufacturer Code: 20h – Device Code: A8h 32 1 PDIP32 (B) Logic Diagram DATA BRIEFING PLCC32 (C) DESCRIPTION The M28F256 Flash memory is a non-volatile memory that may be erased electrically at the chip level and programmed by byte. It is organised as 32 Kbytes of 8 bits. It uses a command register architectureto select the operatingmodes and thus provides a simple microprocessor interface. The device is offered in PDIP32 and PLCC32 pack- ages. VCC VPP 15 A0-A14 8 DQ0-DQ7 Signal Names A0-A14 DQ0-DQ7 E G W VPP VCC VSS Address Inputs Data Inputs / Outputs Chip Enable Output Enable Write Enable Program Supply Supply Voltage Ground W M28F256 E G VSS AI00688B B28F256/808 Complete data available on DATA-on-DISC CD-ROM or at www.st.com 1/2 1 page

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PDF M28F256 Data sheet ( Hoja de datos )