M58PR256J datasheet(99/114 Pages) STMICROELECTRONICS

99 / 114 page

M58PR256J, M58PR512J

Flowcharts and pseudo codes

99/114

Figure 22.

Program Suspend & Resume flowchart and pseudo code

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

Write 70h

AI10117b

Read Status

YES

SR7 = 1

YES

SR2 = 1

Write D0h

Read data from

another address

Start

Write B0h

Program Complete

Write FFh

program_suspend_command ( ) {

writeToFlash (any_address, 0xB0) ;

writeToFlash (bank_address, 0x70) ;

/* read status register to check if

program has already completed */

do {

status_register=readFlash (bank_address) ;

/* E or G must be toggled*/

} while (status_register.SR7== 0) ;

if (status_register.SR2==0) /*program completed */

{ writeToFlash (bank_address, 0xFF) ;

read_data ( ) ;

/*The device returns to Read Array

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

}

else

{ writeToFlash (bank_address, 0xFF) ;

read_data ( ); /*read data from another address*/

writeToFlash (any_address, 0xD0) ;

/*write 0xD0 to resume program*/

writeToFlash (bank_address, 0x70) ;

/*read status register to check if program has completed */

}

Write FFh

Program Continues with

Bank in Read Status

Read Data

Write 70h(1)

M58PR256J Datasheet(PDF) 99 Page - STMicroelectronics

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