AS29F040 データシートの表示（PDF） - Alliance Semiconductor

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AS29F040

5V 512K x 8 CMOS FLASH EEPROM

Alliance Semiconductor 

$65<)373

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Write erase command sequence

(see below)

Write program command sequence

(see below)

DATA polling or toggle bit

successfully completed

DATA poll device-program

Erase complete

Programming completed

Program command sequence

5555h/AAh

2AAAh/55h

5555h/A0h

Program address/program data

Chip erase command sequence

5555h/AAh

Sector erase command sequence

5555h/AAh

2AAAh/55h

2AAAh/55h

5555h/80h

5555h/80h

5555h/AAh

5555h/AAh

2AAAh/55h

2AAAh/55h

5555h/10h

Sector address/30h

Optional multiple

sector erase commands*

Sector address/30h

Sector address/30h

* The system software should check the status of DQ3 prior to and

following each subsequent sector erase command to ensure command

completion. The device may not have accepted the command if DQ3 is

high on second status check.

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