M58LW032 STMICROELECTRONICS [STMicroelectronics], M58LW032 Datasheet - Page 56

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

M58LW032A
Figure 29. Protection Register Program Flowchart and Pseudo Code
Note: PR = Protection Register
56/61
PR Address, PR Data
Read Status Register
(toggle G or E )
PR Program
Write C0h
Write FFh
Write FFh
Sucessful
b4 = 1
b1 = 1
b3 = 1
Write
b7 = 1
Start
End
NO
NO
YES
NO
YES
YES
YES
NO
Protection Register
Protection Register
V PP Invalid Error
Protection Error
Program Error
Read Memory Array Command
– write FFh
while b7 = 1
Protection Register Program Command
– write C0h
– write Protection Register Address,
do:
– read status register (toggle G or E,
do not use the Read Status Register command)
Read Memory Array Command:
– write FFh
If b4 = 1 Protection Register
If b1 = 1 Program Error due to
If b3 = 1 V PP Invalid Error
Protection Register Protection
Protection Register Data
Program Error
AI06159b