MX29F200B View Datasheet(PDF) - Macronix International

Part Name

Description

MFG CO.

MX29F200B

2M-BIT [256Kx8/128Kx16] CMOS FLASH MEMORY

Macronix International 

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MX29F200T/B

SECTOR PROTECTION ALGORITHM FOR SYSTEM WITHOUT 12V

START

Increment PLSCNT

No

PLSCNT=1

Write "unlock for sector protect/unprotect"

Command(Table1)

Set Up Sector Addr

(A16,A15,A14,A13,A12)

OE=VIH,A9=VIH

CE=VIL,A6=VIL

Activate WE Pulse to start

Data don't care

Toggle bit checking

No

DQ6 not Toggled

Yes

Set CE=OE=VIL

A9=VIH

Read from Sector

Addr=SA, A1=1

No

PLSCNT=32?

Data=01H?

Yes

Device Failed

Yes

Protect Another

Yes

.

Sector?

No

Write Reset Command

Sector Protection

Complete

P/N:PM0549

REV. 1.3 , DEC. 24, 2001

38

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