MX29F002BQC-70 View Datasheet(PDF) - Macronix International

Part Name

Description

MFG CO.

MX29F002BQC-70

2M-BIT [256K x 8] CMOS FLASH MEMORY

Macronix International 

MX29F002/002N T/B

CHIP UNPROTECTION ALGORITHM FOR SYSTEM WITH 12V

START

Protect All Sectors

PLSCNT=1

Set OE=A9=VID

CE=VIL,A6=1

Activate WE Pulse

Time Out 12ms

Set OE=CE=VIL

A9=VID,A1=1

Set Up First Sector Addr

Increment

PLSCNT

Increment

Sector Addr

Read Data from Device

No

Data=00H?

Yes

No

All sectors have

been verified?

Yes

Remove VID from A9

Write Reset Command

Chip Unprotect

Complete

No

PLSCNT=1000?

Yes

Device Failed

* It is recommended before unprotect the whole chip, all sectors should be protected in advance.

P/N: PM0547

REV. 1.5, MAR. 28, 2005

35

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