MX29F022TQC-70 View Datasheet(PDF) - Macronix International

Part Name

Description

MFG CO.

MX29F022TQC-70

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

Macronix International 

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MX29F022/022NT/B

CHIP PROTECTION ALGORITHM FOR SYSTEM WITHOUT 12V

Increment PLSCNT

No

PLSCENT=32?

Yes

Device Failed

START

PLSCNT=1

Write "Unlock for chip protect/unprotect"

Command

OE=VID,A9=VID

CE=VIL,A6=VIL

Activate WE Pulse to start

Data don't care

Toggle bit checking

No

.

Q6 not Toggle

Yes

Set CE=OE=VIL

A9=VIH

Read from Sector

Addr. =SA,A1=1

No

Data=01H?

Yes

Write Reset Command

Chip Protection

Complete

P/N:PM0556

REV. 1.3, NOV. 11, 2002

36

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