25X40BLSIG 데이터 시트보기 (PDF) - Winbond

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25X40BLSIG

1M-BIT, 2M-BIT AND 4M-BIT 2.5V SERIAL FLASH MEMORY WITH 4KB SECTORS AND DUAL I/O SPI

Winbond 

W25X10BL/20BL/40BL

9.2.5 Write Disable (04h)

The Write Disable instruction (Figure 6) resets the Write Enable Latch (WEL) bit in the Status Register

to a 0. The Write Disable instruction is entered by driving /CS low, shifting the instruction code “04h”

into the DIO pin and then driving /CS high. Note that the WEL bit is automatically reset after Power-up

and upon completion of the Write Status Register, Page Program, Sector Erase, Block Erase and Chip

Erase instructions.

Figure 6. Write Disable Instruction Sequence Diagram

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Publication Release Date: October 14, 2009

Preliminary -- Revision A

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