ACE25AA160GFMLTH datasheet(26/46 Pages) ACE

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ACE25AA160G

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

VER 1.2

Chip Erase (CE) (60/C7H)

The Chip Erase (CE) command is for erasing the all data of the chip. A Write Enable (WREN) command

must previously have been executed to set the Write Enable Latch (WEL) bit .The Chip Erase (CE)

command is entered by driving CS# Low, followed by the command code on Serial Data Input (SI). CS#

must be driven Low for the entire duration of the sequence.

The Chip Erase command sequence: CS# goes low→send Chip Erase command→CS# goes high. The

command sequence is shown in Figure18. CS# must be driven high after the eighth bit of the command

code has been latch in, otherwise the Chip Erase command is not executed. As soon as CS# is driven

high, the self-timed Chip Erase cycle (whose duration is tCE) is initiated. While the Chip Erase cycle is in

progress, the Status Register may be read to check the value of the Write In Progress (WIP) bit. The Write

In Progress (WIP) bit is 1 during the self-timed Chip Erase cycle, and is 0 when it is completed. At some

unspecified time before the cycle is completed, the Write Enable Latch (WEL) bit is reset. The Chip Erase

(CE) command is executed if the Block protected by (BP2, BP1, BP0) bits. The Chip Erase(CE) command

is ignored if one or more sectors are protected.

Deep Power-Down (DP) (B9H)

Executing the Deep Power-Down (DP) command is the only way to put the device in the lowest

consumption mode (the Deep Power-Down Mode). It can also be used as an extra software protection

mechanism, while the device is not in active use, since in this mode, the device ignores all Write, Program

and Erase commands. Driving CS# high deselects the device, and puts the device in the Standby Mode (if

there is no internal cycle currently in progress). But this mode is not the Deep Power-Down Mode. The

Deep Power-Down Mode can only be entered by executing the Deep Power-Down (DP) command. Once

the device has entered the Deep Power- Down Mode, all commands are ignored except the Release from

Deep Power-Down and Read Device ID (RDI) command. This releases the device from this mode. The

Release from Deep Power-Down and Read Device ID (RDI) command also allows the Device ID of the

device to be output on SO.

The Deep Power-Down Mode automatically stops at Power-Down, and the device always Power-Up in

the Standby Mode. The Deep Power-Down (DP) command is entered by driving CS# low, followed by the

command code on SI. CS# must be driven low for the entire duration of the sequence.

Figure18. Chip Erase Sequence Diagram

ACE25AA160GFMLTH датащи(PDF) 26 Page - ACE Technology Co., LTD.