M36W432BG85ZA6 データシートの表示（PDF） - STMicroelectronics

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M36W432BG85ZA6

32 Mbit (2Mb x16, Boot Block) Flash Memory and 4 Mbit (256Kb x16) SRAM, Multiple Memory Product

STMicroelectronics 

M36W432TG, M36W432BG

Figure 27. Quadruple Word Program Flowchart and Pseudo Code

Start

Write 56h

Write Address 1

& Data 1 (3)

Write Address 2

& Data 2 (3)

Write Address 3

& Data 3 (3)

Write Address 4

& Data 4 (3)

Read Status

Register

quadruple_word_program_command (addressToProgram1, dataToProgram1,

addressToProgram2, dataToProgram2,

addressToProgram3, dataToProgram3,

addressToProgram4, dataToProgram4)

{

writeToFlash (any_address, 0x56) ;

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 (any_address) ;

/* EF or GF must be toggled*/

NO

b7 = 1

YES

NO

b3 = 0

YES

NO

b4 = 0

YES

NO

b1 = 0

YES

End

} while (status_register.b7== 0) ;

VPPF Invalid

Error (1, 2)

if (status_register.b3==1) /*VPPF invalid error */

error_handler ( ) ;

Program

Error (1, 2)

if (status_register.b4==1) /*program error */

error_handler ( ) ;

Program to Protected

Block Error (1, 2)

if (status_register.b1==1) /*program to protect block error */

error_handler ( ) ;

}

AI07934

Note: 1. Status check of b1 (Protected Block), b3 (VPPF Invalid) and b4 (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.

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