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M25P20VMP6T Fiches technique(PDF) 14 Page - STMicroelectronics

No de pièce M25P20VMP6T
Description  1 Mbit, Low Voltage, Serial Flash Memory With 25 MHz SPI Bus Interface
PDF  41 Pages
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Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M25P20VMP6T Fiches technique(HTML) 14 Page - STMicroelectronics

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Write Disable (WRDI)
The Write Disable (WRDI) instruction (Figure 9.)
resets the Write Enable Latch (WEL) bit.
The Write Disable (WRDI) instruction is entered by
driving Chip Select (S) Low, sending the instruc-
tion code, and then driving Chip Select (S) High.
The Write Enable Latch (WEL) bit is reset under
the following conditions:
– Power-up
– Write Disable (WRDI) instruction completion
– Write Status Register (WRSR) instruction com-
pletion
– Page Program (PP) instruction completion
– Sector Erase (SE) instruction completion
– Bulk Erase (BE) instruction completion
Figure 9. Write Disable (WRDI) Instruction Sequence
C
D
AI03750D
S
Q
2
1
34567
High Impedance
0
Instruction



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