M58LT256JST8ZA6 参数 Datasheet PDF下载

Flowcharts and pseudocodes

Figure 24. Erase suspend and resume flowchart and pseudocode

Start

M58LT256JST, M58LT256JSB

Write B0h

erase_suspend_command ( ) {

writeToFlash (bank_address, 0xB0) ;

writeToFlash (bank_address, 0x70) ;

/* read status register to check if

erase has already completed */

Write 70h

Read Status

Register

do {

status_register=readFlash (bank_address) ;

/* E or G must be toggled*/

SR7 = 1

YES

SR6 = 1

NO

} while (status_register.SR7== 0) ;

NO

Erase Complete

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

{ writeToFlash (bank_address, 0xFF) ;

Write FFh

Read Data

YES

Write FFh

Read data from another block

or

Program

or

Block Protect/Unprotect

Write D0h

else

}

read_data ( ) ;

/*The device returns to Read Array

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

{ 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)

Erase Continues with

Bank in Read Status

Register Mode

AI12897b

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

94/108