M58CR064CZB データシートの表示（PDF） - STMicroelectronics

部品番号

コンポーネント説明

メーカー

M58CR064CZB

64 Mbit (4Mb x 16, Dual Bank, Burst) 1.8V Supply Flash Memory

STMicroelectronics 

M58CR064C, M58CR064D, M58CR064P, M58CR064Q

Figure 25. Erase Suspend & Resume Flowchart and Pseudo Code

Start

Write B0h

Write 70h

Read Status

Register

NO

SR7 = 1

YES

NO

SR6 = 1

YES

Write FFh

Erase Complete

Read data from

another block

or

Program/Protection Program

or

Block Protect/Unprotect/Lock

Write D0h

Write FFh

Erase Continues

Read Data

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*/

}

}

AI06175

63/70

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