M29W320DB70N6E_03 데이터 시트보기 (PDF) - STMicroelectronics

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M29W320DB70N6E_03

32 Mbit (4Mb x8 or 2Mb x16, Boot Block) 3V Supply Flash Memory

STMicroelectronics 

Figure 20. In-System Equipment Block Protect Flowchart

M29W320DT, M29W320DB

START

n=0

RP = VID

WRITE 60h

ADDRESS = BLOCK ADDRESS

A0 = VIL, A1 = VIH, A6 = VIL

WRITE 60h

ADDRESS = BLOCK ADDRESS

A0 = VIL, A1 = VIH, A6 = VIL

Wait 100µs

WRITE 40h

ADDRESS = BLOCK ADDRESS

A0 = VIL, A1 = VIH, A6 = VIL

Wait 4µs

READ DATA

ADDRESS = BLOCK ADDRESS

A0 = VIL, A1 = VIH, A6 = VIL

DATA NO

=

01h

YES

RP = VIH

ISSUE READ/RESET

COMMAND

PASS

++n NO

= 25

YES

RP = VIH

ISSUE READ/RESET

COMMAND

FAIL

AI03471

41/44

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