W49L201S-90 Просмотр технического описания (PDF) - Winbond

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W49L201S-90

128K X 16 CMOS FLASH MEMORY

Winbond 

W49L201

Timing Waveforms, continued

Boot Block Lockout Enable Timing Diagram

Address A16-0

DQ15-0

CE

OE

WE

5555

Six-word code for Boot Block

Lockout Feature Enable

2AAA

5555

5555

2AAA

5555

XXAA

XX55

XX80

XXAA

XX55

XX40

TWP

TEC

TWPH

SW0

SW1

SW23 SW3

SW4

SW5

*Note: It is not allowed to assert read operation(CE# &OE# are both active) during the

command sequence. If read command is asserted during the command

sequence, then the device will return to read mode(abort write).

Chip Erase Timing Diagram

Address A16-0

DQ15-0

CE

OE

WE

5555

Six-word code for 3.3V-only software

chip erase

2AAA

5555

5555

2AAA 5555

XXAA XX55

XX80 XXAA XX55

XX10

TWP

TWPH

SW0

SW1

SW2

SW3

SW4

TEC

SW5 Internal Erase starts

- 19 -

Publication Release Date: May 2000

Revision A1

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