W49F020-70 Просмотр технического описания (PDF) - Winbond

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W49F020-70

256K x 8 CMOS FLASH MEMORY

Winbond 

Preliminary W49F020

Timing Waveforms, continued

Chip Erase Timing Diagram

Address A17-0

DQ7-0

CE

OE

WE

5555

Six-byte code for 5V-only software

chip erase

2AAA

5555

5555

2AAA 5555

XXAA

XX55

XX80

XXAA

XX55

XX10

TWP

TWPH

SB0

SB1

SB2

SB3

SB4

TEC

SB5 Internal Erase starts

- 17 -

Publication Release Date: October 1999

Revision A1

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