M58PR512LE datasheet(109/119 Pages) STMICROELECTRONICS

부품명	M58PR512LE

상세설명	256-Mbit, 512-Mbit or 1-Gbit (횞 16, multiple bank, multilevel, burst) 1.8 V supply Flash memories

PDF	119 Pages

Scroll/Zoom	100%

제조업체	STMICROELECTRONICS [STMicroelectronics]

홈페이지	http://www.st.com

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109 / 119 page

M58PR256LE, M58PR512LE, M58PR001LE

Flowcharts and pseudocodes

109/119

Figure 27.

Protection Register program flowchart and pseudocode

Status check of SR1 (protected block), SR3 (VPP invalid) and SR4 (program error) can be made after each program

operation or after a sequence.

If an error is found, the Status Register must be cleared before further Program/Erase controller operations.

Write C0h (1)

AI06177c

Start

Write Address

& Data

Read Status

YES

SR7 = 1

YES

SR3 = 0

SR4 = 0

VPP Invalid

Error (2, 3)

Program

Error (2, 3)

protection_register_program_command (addressToProgram, dataToProgram) {:

writeToFlash (addressToProgram, 0xC0) ;

/*see note (1) */

do {

status_register=readFlash (addressToProgram) ;

/* see note (1) */

/* E or G must be toggled*/

} while (status_register.SR7== 0) ;

if (status_register.SR3==1) /*VPP invalid error */

error_handler ( ) ;

YES

End

YES

SR1 = 0

Program to Protected

Block Error (2, 3)

writeToFlash (addressToProgram, dataToProgram) ;

/*Memory enters read status state after

the Program Command*/

if (status_register.SR4==1) /*program error */

error_handler ( ) ;

if (status_register.SR1==1) /*program to protect block error */

error_handler ( ) ;

}

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