EN29F002(2000) 데이터 시트보기 (PDF) - Eon Silicon Solution Inc.

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EN29F002
(Rev.:2000)

2 Megabit (256K x 8-bit) Flash Memory

Eon Silicon Solution Inc. 

Flowchart 9. Block Unprotect Flowchart

EN29F002 / EN29F002N

Protect all Blocks

Vcc = 5.0V± 5%

PLSCNT = 1

Set OE, A9 = VID

CE, A0 = VIL

RESET, A6, A1 = VIH

Activate WE pulse

Wait 100ms

WE = VIH, CE = VIH

OE = VIL, A9 = VID

Set up Block Address BA0

A0 =VIL, A1=A6 =VIH

Increment PLSCNT

CE = V IH

CE = VIL

Read Data from Device

Increment Block Address

CE = VIH

NO

DATA

NO

= 00h

YES

Block Addr =

BA6 ?

YES

Remove VID from A9

NO

PLSCNT =1000?

YES

FAIL

BLOCK UNPROTECT

COMPLETE

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