M58LW032 STMICROELECTRONICS [STMicroelectronics], M58LW032 Datasheet - Page 55

• Manufacturer Part Number: M58LW032
• Description: 32 Mbit 2Mb x16, Uniform Block, Burst 3V Supply Flash Memory
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

Figure 28. Blocks Unprotect Flowchart and Pseudo Code
Read Status Register
Blocks Unprotect
(toggle G or E )
b4, b5 = 1,1
Write D0h
Write FFh
Write 60h
Sucessful
b5 = 1
b7 = 1
b3 = 1
Start
End
NO
NO
YES
NO
YES
YES
YES
NO
Invalid Command
Blocks Unprotect
Sequence Error
V PP Invalid
Error
Error
If b5 = 1, Blocks Unprotect Error
Read Memory Array Command:
– write FFh
do:
– read status register ( toggle G or E,
do not use the Read Status Register command)
If b4 = 1, b5 = 1 Invalid Command
while b7 = 1
Block Unprotect Command
– write 60h, Block Adress
– write D0h, Block Adress
If b3 = 1, V PP Invalid Error
Sequence Error
M58LW032A
AI06158b
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