ACE25AA320GFMTH datasheet(18/67 Pages) ACE

Part #	ACE25AA320GFMTH

Description	Serial NOR Flash Memory 3.0V Multi I/O with 4KB, 32KB & 64KB Sector/Block Erase

PDF	67 Pages

Scroll/Zoom	100%

Manufacturer	ACE [ACE Technology Co., LTD.]

Direct Link	http://www.ace-ele.com

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18 / 67 page

ACE25AA320G

Serial NOR Flash Memory

3.0V Multi I/O with 4KB, 32KB & 64KB Sector/Block Erase

VER 1.2

Write Disable (WRDI) (04H)

The Write Disable command is for resetting the Write Enable Latch (WEL) bit. The Write Disable

command sequence: CS# goes low→sending Write Disable command→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 commands.

Read Status Register (RDSR) (05H or 35H)

The Read Status Register (RDSR) command is for reading the Status Register. The Status Register may

be read at any time, even while a Program, Erase or Write Status Register cycle is in progress. When one

of these cycles is in progress, it is recommended to check the Write In Progress (WIP) bit before sending

a new command to the device. It is also possible to read the Status Register continuously. For command

code “05H”, the SO will output Status Register bits S7~S0. The command code “35H”, the SO will output

Status Register bits S15~S8.

Figure3. Write Disable Sequence Diagram

Figure3a. Write Disable Sequence Diagram (QPI)

ACE25AA320GFMTH Datasheet(PDF) 18 Page - ACE Technology Co., LTD.