M36W432BG ST Microelectronics, M36W432BG Datasheet - Page 61
![no-image](/images/no-image-200.jpg)
M36W432BG
Manufacturer Part Number
M36W432BG
Description
32 Mbit 2Mb x16 / Boot Block Flash Memory and 4 Mbit 256Kb x16 SRAM / Multiple Memory Product
Manufacturer
ST Microelectronics
Datasheet
1.M36W432BG.pdf
(66 pages)
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Figure 31. Locking Operations Flowchart and Pseudo Code
01h, D0h or 2Fh
Read Block
Lock States
confirmed?
Write 60h
Write 90h
Write FFh
Locking
change
Write
Start
End
YES
NO
locking_operation_command (address, lock_operation) {
}
writeToFlash (any_address, 0xFF) ; /*Reset to Read Array mode*/
writeToFlash (any_address, 0x60) ; /*configuration setup*/
if (lock_operation==LOCK) /*to protect the block*/
else if (lock_operation==UNLOCK) /*to unprotect the block*/
else if (lock_operation==LOCK-DOWN) /*to lock the block*/
if (readFlash (address) ! = locking_state_expected)
writeToFlash (address, 0x01) ;
writeToFlash (address, 0xD0) ;
writeToFlash (address, 0x2F) ;
writeToFlash (any_address, 0x90) ;
/*Check the locking state (see Read Block Signature table )*/
error_handler () ;
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