W25Q32FVZPIP datasheet(76/99 Pages) WINBOND

tên linh kiện	W25Q32FVZPIP

Giải thích chi tiết về linh kiện	3V 32M-BIT SERIAL FLASH MEMORY WITH DUAL/QUAD SPI & QPI

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W25Q32FV

- 75 -

8.2.38

Individual Block/Sector Lock (36h)

The Individual Block/Sector Lock provides an alternative way to protect the memory array from adverse

Erase/Program. In order to use the Individual Block/Sector Locks, the WPS bit in Status Register-3 must

be set to 1. If WPS=0, the write protection will be determined by the combination of CMP, SEC, TB,

BP[2:0] bits in the Status Registers. The Individual Block/Sector Lock bits are volatile bits. The default

values after device power up or after a Reset are 1, so the entire memory array is being protected.

To lock a specific block or sector as illustrated in Figure 4d, an Individual Block/Sector Lock command

must be issued by driving /CS low, shifting the instruction code “36h” into the Data Input (DI) pin on the

rising edge of CLK, followed by a 24-bit address and then driving /CS high. A Write Enable instruction

must be executed before the device will accept the Individual Block/Sector Lock Instruction (Status

Figure 52a. Individual Block/Sector Lock Instruction (SPI Mode)

Figure 52b. Individual Block/Sector Lock Instruction (QPI Mode)

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