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M30LW128D Datasheet(PDF) 50 Page - STMicroelectronics

Part # M30LW128D
Description  128 Mbit (two 64Mbit, x8/x16, Uniform Block, Flash Memories) 3V Supply, Multiple Memory Product
PDF  57 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M30LW128D Datasheet(HTML) 50 Page - STMicroelectronics

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Figure 23. Block Protect Flowchart and Pseudo Code
Note: 1. The Read Status Register command must be issued to the same address as the Block Protect command.
Write 01h
Block Address
AI07517b
YES
NO
b7 = 1
Start
Write 60h
Block Address
Write FFh
Read
Status Register(1)
Block Protect
Sucessful
b3 = 1
b4, b5 = 1,1
b4 = 1
VPEN Invalid
Error
Invalid Command
Sequence Error
Block Protect
Error
YES
YES
YES
NO
NO
NO
Block Protect Command
– write 60h, Block Adress
– write 01h, Block Adress
do:
– read status register
while b7 = 1
If b3 = 1, VPEN Invalid Error
Read Memory Array Command:
– write FFh
If b4 = 1, b5 = 1 Invalid Command Sequence
Error
If b4 = 1, Block Protect Error



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