M28W160BB100ZB1T View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

M28W160BB100ZB1T

16 Mbit (1Mb x16, Boot Block) 3V Supply Flash Memory

STMicroelectronics 

M28W160BT, M28W160BB

Figure 24. Erase Suspend & Resume Flowchart and Pseudo Code

Start

Write B0h

Write 70h

Read Status

Register

NO

b7 = 1

YES

NO

b6 = 1

YES

Write FFh

Read data from

another block

or

Program

Write D0h

Erase Complete

Write FFh

Erase Continues

Read Data

erase_suspend_command ( ) {

writeToFlash (any_address, 0xB0) ;

writeToFlash (any_address, 0x70) ;

/* read status register to check if

erase has already completed */

do {

status_register=readFlash (any_address) ;

/* E or G must be toggled*/

} while (status_register.b7== 0) ;

if (status_register.b6==0) /*erase completed */

{ writeToFlash (any_address, 0xFF) ;

read_data ( ) ;

/*read data from another block*/

/*The device returns to Read Array

(as if program/erase suspend was not issued).*/

}

else

{ writeToFlash (any_address, 0xFF) ;

read_program_data ( );

/*read or program data from another address*/

writeToFlash (any_address, 0xD0) ;

/*write 0xD0 to resume erase*/

}

}

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