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M58LW032D Datasheet(PDF) 46 Page - STMicroelectronics

Part # M58LW032D
Description  32 Mbit 4Mb x8, 2Mb x16, Uniform Block 3V Supply Flash Memory
PDF  51 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M58LW032D Datasheet(HTML) 46 Page - STMicroelectronics

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Figure 22. Protection Register Program Flowchart and Pseudo Code
Note: PR = Protection Register
Write
PR Address, PR Data
AI06159b
YES
NO
SR7 = 1
Start
Write C0h
Write FFh
Read Status Register
PR Program
Sucessful
SR1, SR4 = 0,1
VPEN Invalid Error
Protection Register
Program Error
Protection Register
Program Error
YES
YES
YES
NO
NO
NO
Protection Register Program Command
– write C0h
– write Protection Register Address,
Protection Register Data
do:
– read status register
while SR7 = 1
Read Memory Array Command:
– write FFh
If SR1 = 0, SR4 = 1 Protection Register
Program Error
SR3, SR4 = 1,1
If SR3 = 1, SR4 = 1 VPEN Invalid Error
SR1, SR4 = 1,1
If SR1 = 1, SR4 = 1 Program Error due to
Protection Register Protection



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