M58WR064F-ZBE View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

M58WR064F-ZBE

64 Mbit (4Mb x16, Multiple Bank, Burst) 1.8V Supply Flash Memory

STMicroelectronics 

M58WR064FT, M58WR064FB

Figure 27. Erase Suspend & Resume Flowchart and Pseudo Code

Start

Write B0h

Write 70h

erase_suspend_command ( ) {

writeToFlash (bank_address, 0xB0) ;

writeToFlash (bank_address, 0x70) ;

/* read status register to check if

erase has already completed */

Read Status

Register

do {

status_register=readFlash (bank_address) ;

/* E or G must be toggled*/

NO

SR7 = 1

} while (status_register.SR7== 0) ;

YES

NO

SR6 = 1

Erase Complete

Write FFh

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

{ writeToFlash (bank_address, 0xFF) ;

YES

Write FFh

Read Data

Read data from another block

or

Program/Protection Register Program

or

Block Lock/Unlock/Lock-Down

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*/

Write D0h

writeToFlash (bank_address, 0xD0) ;

/*write 0xD0 to resume erase*/

Write 70h(1)

Erase Continues with

Bank in Read Status

Register Mode

writeToFlash (bank_address, 0x70) ;

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

}

}

AI10116b

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

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