M28W640FCT_06 datasheet(67/77 Pages) STMICROELECTRONICS

No. de pieza	M28W640FCT

Descripción Electrónicos	64 Mbit (4Mbx16, Boot Block) 3V Supply Flash memory

PDF	77 Pages

Scroll/Zoom	100%

Fabricante Electrónico	STMICROELECTRONICS [STMicroelectronics]

Página de inicio	http://www.st.com

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67 / 77 page

M28W640FCT, M28W640FCB

Flowcharts and pseudo codes

67/77

Figure 19.

Program Suspend & Resume flowchart and pseudo code

Write 70h

AI03540b

Read Status

YES

b7 = 1

YES

b2 = 1

Program Continues

Write D0h

Read data from

another address

Start

Write B0h

Program Complete

Write FFh

Read Data

program_suspend_command ( ) {

writeToFlash (any_address, 0xB0) ;

writeToFlash (any_address, 0x70) ;

/* read status register to check if

program has already completed */

do {

status_register=readFlash (any_address) ;

/* E or G must be toggled*/

} while (status_register.b7== 0) ;

if (status_register.b2==0) /*program completed */

{ writeToFlash (any_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 (any_address, 0xFF) ;

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

writeToFlash (any_address, 0xD0) ;

/*write 0xD0 to resume program*/

}

Write FFh

M28W640FCT Datasheet(PDF) 67 Page - STMicroelectronics

M28W640FCT Datasheet(HTML) 67 Page - STMicroelectronics

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