M58LW032D 데이터 시트보기 (PDF) - STMicroelectronics

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M58LW032D

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

STMicroelectronics 

Figure 20. Block Protect Flowchart and Pseudo Code

M58LW032D

Start

Write 60h

Block Address

Write 01h

Block Address

Read Status Register

SR7 = 1

NO

YES

SR3 = 1

YES

VPEN Invalid Error

NO

YES

SR4, SR5 = 1,1

NO

Invalid Command

Sequence Error

SR4 = 1

NO

YES

Block Protect

Error

Write FFh

Block Protect

Sucessful

Block Protect Command

– write 60h, Block Adress

– write 01h, 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 SR4 = 1, Block Protect Error

Read Memory Array Command:

– write FFh

AI06157b

43/50

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