ACE25QA200G

2M BIT SPI NOR FLASH

VER 1.2

10

Configuration and Status Instructions

Write Enable (06H)

See Figure 1, the Write Enable instruction is for setting the Write Enable Latch bit. The Write Enable

Latch bit must be set prior to every Page Program, Sector Erase, Block Erase, Chip Erase and Write

Status Register instruction. The Write Enable instruction sequence: /CS goes low sending the Write

Enable instruction /CS goes high.

Write Disable (04H)

See Figure 2, the Write Disable instruction is for resetting the Write Enable Latch bit. The Write Disable

instruction sequence: /CS goes low sending the Write Disable instruction /CS goes high. The WEL bit is

reset by following condition: Power-up and upon completion of the Write Status Register, Page Program,

Sector Erase, Block Erase and Chip Erase instructions.

Figure 1. Write Enable Sequence Diagram

Figure 2. Write Disable Sequence Diagram