MX29F040CQI-70G datasheet(29/38 Pages) MCNIX

Part #	MX29F040CQI-70G

Description	4M-BIT [512K x 8] CMOS SINGLE VOLTAGE 5V ONLY EQUAL SECTOR FLASH MEMORY

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Manufacturer	MCNIX [Macronix International]

Direct Link	http://www.macronix.com

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29 / 38 page

29

P/N:PM1201

REV. 1.0, DEC. 20, 2005

MX29F040C

CHIP UNPROTECTION ALGORITHM FOR SYSTEM WITHOUT 12V

START

Protect All Sectors

PLSCNT=1

Chip Unprotect

Complete

Data=00H?

Toggle bit checking

Q6 not Toggled

Yes

Write "unlock for sector protect/unprotect"

Command (Table 1)

Set OE#=A9=VIH

CE#=VIL,A6=1

Activate WE# Pulse to start

Data do'nt care

Set OE#=CE#=VIL

A9=VIH,A1=1

Set Up First Sector Addr

All sectors have

been verified?

Write Reset Command

Device Failed

PLSCNT=1000?

No

Increment

PLSCNT

No

Read Data from Device

Yes

No

Increment

Sector Addr

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

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MX29F040CQI-70G Datasheet(PDF) 29 Page - Macronix International

MX29F040CQI-70G Datasheet(HTML) 29 Page - Macronix International

Similar Part No. - MX29F040CQI-70G

Similar Description - MX29F040CQI-70G

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