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M45PE80 bảng dữ liệu(PDF) 18 Page - STMicroelectronics

tên linh kiện M45PE80
Giải thích chi tiết về linh kiện  8 Mbit, low voltage, Page-Erasable Serial Flash memory with byte alterability and a 50 MHz SPI bus interface
PDF  47 Pages
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nhà sản xuất  STMICROELECTRONICS [STMicroelectronics]
Trang chủ  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M45PE80 bảng dữ liệu(HTML) 18 Page - STMicroelectronics

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Instructions
M45PE80
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6.1
Write Enable (WREN)
The Write Enable (WREN) instruction (Figure 6) sets the Write Enable Latch (WEL) bit.
The Write Enable Latch (WEL) bit must be set prior to every Page Write (PW), Page
Program (PP), Page Erase (PE), and Sector Erase (SE) instruction.
The Write Enable (WREN) instruction is entered by driving Chip Select (S) Low, sending the
instruction code, and then driving Chip Select (S) High.
Figure 6.
Write Enable (WREN) instruction sequence
6.2
Write Disable (WRDI)
The Write Disable (WRDI) instruction (Figure 7) resets the Write Enable Latch (WEL) bit.
The Write Disable (WRDI) instruction is entered by driving Chip Select (S) Low, sending the
instruction 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
●
Page Write (PW) instruction completion
●
Page Program (PP) instruction completion
●
Page Erase (PE) instruction completion
●
Sector Erase (SE) instruction completion
Figure 7.
Write Disable (WRDI) instruction sequence
C
D
AI02281E
S
Q
2
1
34567
High Impedance
0
Instruction
C
D
AI03750D
S
Q
2
1
34567
High Impedance
0
Instruction



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