ACE25AA160GFMLTH datasheet(30/46 Pages) ACE

30 / 46 page

ACE25AA160G

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

VER 1.2

Continuous Read Mode Reset (CRMR) (FFH)

The Dual/Quad I/O Fast Read operations, “Continuous Read Mode” bits (M7-0) are implemented to

further reduce command overhead. By setting the (M7-0) to AXH, the next Dual/Quad I/O Fast Read

operations do not require the BBH/EBH/E7H command code.

Because the ACE25AA160G has no hardware reset pin, so if Continuous Read Mode bits are set to

“AXH”, the ACE25AA160G will not recognize any standard SPI commands. So Continuous Read Mode

Reset command will release the Continuous Read Mode from the “AXH” state and allow standard SPI

command to be recognized. The command sequence is shown in Figure 24.

Program/Erase Suspend (PES) (75H)

The Program/Erase Suspend command “75H”, allows the system to interrupt a page program or sec-

tor/block erase operation and then read data from any other sector or block. The Write Status Register

command (01H) and Erase Security Registers (44H, 42H) and Erase commands (20H, 52H, D8H, C7H,

60H) and Page Program command are not allowed during Program/Erase suspend. Program/Erase

Suspend is valid only during the page program or sector/block erase operation. A maximum of time of

“tSUS” (See AC Characteristics) is required to suspend the program/erase operation

Figure24. Continuous Read Mode Reset Sequence Diagram

Figure23. High Speed Mode Sequence Diagram

ACE25AA160GFMLTH Datasheet(PDF) 30 Page - ACE Technology Co., LTD.