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Analog Circuit Design Volume Three by John Hamburger, Bob Dobkin

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Chapter 29

Programming pulse generators for flash memories

Jim Williams

Abstract

Programming pulse generators for flash memories is discussed.

Keywords

Flash memory

Pulse generator

LT1072

Recently introduced “flash” memories add electrical chip-erasure and reprogramming to established EPROM technology. These features make them a cost-effective and reliable alternative for updatable non-volatile memory. Utilizing the electrical program-erase capability requires linear circuitry techniques. The Intel 28F256 flash memory, built on the ETOX process, specifies programming operation with 12V or 12.75V (faster erase/program times) amplitude pulses. These “VPP” amplitudes must fall within 1.6%, and excursions beyond 14.0V will damage the device. ...

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