M58WR032FT datasheet(74/86 Pages) STMICROELECTRONICS

74 / 86 page

M58WR032FT, M58WR032FB

74/86

Figure 27. Erase Suspend & Resume Flowchart and Pseudo Code

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

Write 70h

AI10116b

Read Status

YES

SR7 = 1

YES

SR6 = 1

Erase Continues with

Bank in Read Status

Write D0h

Read data from another block

Program/Protection Register Program

Block Lock/Unlock/Lock-Down

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 ( ) ;

/*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 block*/

writeToFlash (bank_address, 0xD0) ;

/*write 0xD0 to resume erase*/

writeToFlash (bank_address, 0x70) ;

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

}

Write 70h(1)

M58WR032FT 数据表(PDF) 74 Page - STMicroelectronics

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