M58LT128GS datasheet(89/98 Pages) STMICROELECTRONICS

89 / 98 page

M58LT128GST, M58LT128GSB

13 Part Numbering

89/98

Figure 25. Buffer Enhanced Factory Program Flowchart and Pseudo Code

For how to check the targeted block protection status, refer to the Application Note concerning the device security features.

Write 80h to

Address WA1

AI10658

Start

Write D0h to

Address WA1

Write FFFFh to

Address = NOT WA1

Read Status

SR7 = 0

SR0 = 0

YES

Read Status Register

SR3 and SR1for errors

Exit

Write PDX

Address WA1

Increment Count

X = X + 1

Initialize count

X = 0

X = 32

YES

Read Status

Last data?

YES

Read Status

SR7 = 1

YES

Full Status Register

Check

End

YES

SR4 = 1

SETUP PHASE

PROGRAM AND

VERIFY PHASE

EXIT PHASE

Buffer_Enhanced_Factory_Program_Command

(start_address, DataFlow[]) {

VerifyTargeted Block Protection Status

if block protected Return Device to Read Mode

writeToFlash (start_address, 0x80) ;

writeToFlash (start_address, 0xD0) ;

do {

status_register = readFlash (start_address);

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

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

if (status_register.SR1==1) error_handler ( ) ;/* Locked Block */

}

while (status_register.SR7==1)

x=0; /* initialize count */

do {

writeToFlash (start_address, DataFlow[x]);

x++;

}while (x<32)

do {

status_register = readFlash (start_address);

}while (status_register.SR0==1)

} while (not last data)

writeToFlash (another_block_address, FFFFh)

do {

status_register = readFlash (start_address)

}while (status_register.SR7==0)

full_status_register_check();

}

Verify Block

Protection Status

Protected

Block

YES

Write FFFFh to

Address WA1

Read Mode

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