M58LR128KB datasheet(96/110 Pages) NUMONYX

96 / 110 page

Flowcharts and pseudocodes

M58LR128KT, M58LR128KB, M58LR256KT, M58LR256KB

96/111

Figure 23.

Erase suspend and resume flowchart and pseudocode

The Read Status Register command (Write 70h) can be issued just before or just after the Erase Resume command.

Write 70h

AI13893

Read Status

YES

SR7 = 1

YES

SR6 = 1

Erase Continues

Write D0h

Read data from another block,

Program,

Set Configuration Register or

Block Protect/Unprotect/Lock

Start

Write B0h

Erase Complete

Write FFh

Read Data

Write FFh

erase_suspend_command ( ) {

writeToFlash (bank_address, 0xB0) ;

writeToFlash (bank_address, 0x70) ;

/* read status register to check if

erase has already completed */

do {

status_register=readFlash (bank_address) ;

/* E or G must be toggled*/

} while (status_register.SR7== 0) ;

if (status_register.SR6==0) /*erase completed */

{ writeToFlash (bank_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 (bank_address, 0xFF) ;

read_program_data ( );

/*read or program data from another address*/

writeToFlash (bank_address, 0xD0) ;

/*write 0xD0 to resume erase*/

}

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