M58LW032D 데이터 시트보기 (PDF) - STMicroelectronics

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M58LW032D

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

STMicroelectronics 

M58LW032D

Figure 21. Block Unprotect Flowchart and Pseudo Code

Start

Write 60h

Write D0h

Read Status Register

SR7 = 1

NO

YES

SR3 = 1

YES

VPEN Invalid Error

NO

YES

SR4, SR5 = 1,1

NO

Invalid Command

Sequence Error

SR5 = 1

NO

YES

Blocks Unprotect

Error

Write FFh

Blocks Unprotect

Sucessful

Blocks Unprotect Command

– write 60h, Block Adress

– write D0h, Block Adress

do:

– read status register

while SR7 = 1

If SR3 = 1, VPEN Invalid Error

If SR4 = 1, SR5 = 1 Invalid Command

Sequence Error

If SR5 = 1, Blocks Unprotect Error

Read Memory Array Command:

– write FFh

AI06158b

44/50

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