ACE25C100G datasheet(5/37 Pages) ACE

Part #	ACE25C100G

Description	Uniform Sector Dual and Quad Serial Flash

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Manufacturer	ACE [ACE Technology Co., LTD.]

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

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ACE25C100G

Uniform Sector Dual and Quad Serial Flash

VER 1.4

5

Hold

The HOLD# signal goes low to stop any serial communications with the device, but doesn’t stop the

operation of write status register, programming, or erasing in progress.

The operation of HOLD, need CS# keep low, and starts on falling edge of the HOLD# signal, with

SCLK signal being low (if SCLK is not being low, HOLD operation will not start until SCLK being low).

The HOLD condition ends on rising edge of HOLD# signal with SCLK being low (If SCLK is not being

low, HOLD operation will not end until SCLK being low).

The SO is high impedance, both SI and SCLK don’t care during the HOLD operation, if CS# drives

high during HOLD operation, it will reset the internal logic of the device. To re-start communication

with chip, the HOLD# must be at high and then CS# must be at low.

Figure1. Hold Condition

Data Protection

The ACE25C100G provide the following data protection methods:

 Write Enable (WREN) command: The WREN command is set the Write Enable Latch bit (WEL).

The WEL bit will return to reset by the following situation:

-Power-Up

-Write Disable (WRDI)

-Write Status Register(WRSR)

-Page Program (PP)

-Sector Erase (SE) / Block Erase (BE) / Chip Erase (CE)

 Software Protection Mode: The Block Protect (SEC, TB, BP2, BP1, BP0) bits define the section

of the memory array that can be read but not change.

 Hardware Protection Mode: WP# going low to protected the BP0~SEC bits and SRP0~1 bits.

 Deep Power-Down Mode: In Deep Power-Down Mode, all commands are ignored except the

Release from deep Power-Down Mode command.

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