M58LW032A 데이터 시트보기 (PDF) - STMicroelectronics

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M58LW032A

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

STMicroelectronics 

Figure 28. Blocks Unprotect Flowchart and Pseudo Code

M58LW032A

Start

Write 60h

Write D0h

Read Status Register

(toggle G or E )

b7 = 1

NO

YES

b3 = 1

YES

NO

VPP Invalid

Error

YES

b4, b5 = 1,1

NO

Invalid Command

Sequence Error

b5 = 1

NO

YES

Blocks Unprotect

Error

Blocks Unprotect

Sucessful

Write FFh

End

Block Unprotect Command

– write 60h, Block Adress

– write D0h, Block Adress

do:

– read status register ( toggle G or E,

do not use the Read Status Register command)

while b7 = 1

If b3 = 1, VPP Invalid Error

If b4 = 1, b5 = 1 Invalid Command

Sequence Error

If b5 = 1, Blocks Unprotect Error

Read Memory Array Command:

– write FFh

AI06158b

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