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M30LW128D 데이터시트(PDF) 52 Page - STMicroelectronics

부품명 M30LW128D
상세설명  128 Mbit (two 64Mbit, x8/x16, Uniform Block, Flash Memories) 3V Supply, Multiple Memory Product
PDF  57 Pages
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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M30LW128D 데이터시트(HTML) 52 Page - STMicroelectronics

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Figure 25. Protection Register Program Flowchart and Pseudo Code
Note: 1. PR = Protection Register
2. The Read Status Register command must be issued to the same address as the Protection Register Program command.
Write
PR Add, PR Data(1)
AI06159b
YES
NO
b7 = 1
Start
Write C0h
Write FFh
Read
Status Register(2)
PR Program
Sucessful
b4 = 1
VPEN Invalid
Error
Protection Register
Program Error
Protection Register
Lock 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 b7 = 1
Read Memory Array Command:
– write FFh
If b4 = 1 Protection Register
Program Error
b3 = 1
If b3 = 1 VPEN Invalid Error
b1 = 1
If b1 = 1 Protection Register Lock Error



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