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M95040-DF Datasheet(PDF) 20 Page - STMicroelectronics

Part # M95040-DF
Description  Compatible with SPI bus serial interface
PDF  46 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M95040-DF Datasheet(HTML) 20 Page - STMicroelectronics

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Instructions
M950x0-W M950x0-R M950x0-DF
20/46
DocID6512 Rev 13
6.3.3
BP1, BP0 bits
The Block Protect (BP1, BP0) bits are non-volatile. They define the size of the area to be
software protected against Write instructions. These bits are written with the Write Status
Register (WRSR) instruction. When one or both of the Block Protect (BP1, BP0) bits is set to
1, the relevant memory area (as defined in Table 3: Write-protected block size) becomes
protected against Write (WRITE) instructions. The Block Protect (BP1, BP0) bits can be
written provided that the Hardware Protected mode has not been set.
Figure 9. Read Status Register (RDSR) sequence
C
D
S
2
1
3456789 10 11 12 13 14 15
Instruction
0
AI01444D
Q
7
6543210
Status Register Out
High Impedance
MSB
7
6543210
Status Register Out
MSB
7



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