m58lw064d STMicroelectronics, m58lw064d Datasheet - Page 44

• Manufacturer Part Number: m58lw064d
• Description: 64 Mbit 8mb X8, 4mb X16, Uniform Block 3v Supply Flash Memory
• Manufacturer: STMicroelectronics

M58LW064D
Figure 21. Blocks Unprotect Flowchart and Pseudo Code
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Read Status Register
SR4, SR5 = 1,1
Blocks Unprotect
Write D0h
Write FFh
Write 60h
Sucessful
SR5 = 1
SR7 = 1
SR3 = 1
Start
NO
NO
NO
YES
YES
YES
YES
NO
V PEN Invalid Error
Invalid Command
Blocks Unprotect
Sequence Error
Error
If SR5 = 1, Blocks Unprotect Error
If SR4 = 1, SR5 = 1 Invalid Command
while SR7 = 1
Blocks Unprotect Command
– write 60h, Block Adress
– write D0h, Block Adress
do:
– read status register
If SR3 = 1, V PEN Invalid Error
Read Memory Array Command:
– write FFh
Sequence Error
AI06158b