M58WR032EB datasheet(66/81 Pages) STMICROELECTRONICS

66 / 81 page

M58WR032ET, M58WR032EB

66/81

Figure 23. Quadruple Word Program Flowchart and Pseudo Code

Note: 1. Status check of SR1 (Protected Block), SR3 (VPP Invalid) and SR4 (Program Error) can be made after each program operation or

after a sequence.

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

3. Address 1 to Address 4 must be consecutive addresses differing only for bits A0 and A1.

4. Any address within the bank can equally be used.

Write 56h

AI06977b

Start

Write Address 1

& Data 1 (3, 4)

Read Status

YES

SR7 = 1

YES

SR3 = 0

SR4 = 0

VPP Invalid

Error (1, 2)

Program

Error (1, 2)

YES

End

YES

SR1 = 0

Program to Protected

Block Error (1, 2)

Write Address 2

& Data 2 (3)

quadruple_word_program_command (addressToProgram1, dataToProgram1,

addressToProgram2, dataToProgram2,

addressToProgram3, dataToProgram3,

addressToProgram4, dataToProgram4)

{

writeToFlash (addressToProgram1, 0x56);

/*see note (4) */

writeToFlash (addressToProgram1, dataToProgram1) ;

/*see note (3) */

writeToFlash (addressToProgram2, dataToProgram2) ;

/*see note (3) */

writeToFlash (addressToProgram3, dataToProgram3) ;

/*see note (3) */

writeToFlash (addressToProgram4, dataToProgram4) ;

/*see note (3) */

/*Memory enters read status state after

the Program command*/

do {

status_register=readFlash (addressToProgram) ;

/"see note (4) "/

/* E or G must be toggled*/

} while (status_register.SR7== 0) ;

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

error_handler ( ) ;

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

error_handler ( ) ;

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

error_handler ( ) ;

}

Write Address 3

& Data 3 (3)

Write Address 4

& Data 4 (3)

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