m58wr032et STMicroelectronics, m58wr032et Datasheet - Page 70

• Manufacturer Part Number: m58wr032et
• Description: 32 Mbit 2mb X 16, Multiple Bank, Burst 1.8v Supply Flash Memory
• Manufacturer: STMicroelectronics

M58WR032ET, M58WR032EB
Figure 27. Locking Operations Flowchart and Pseudo Code
Note: 1. Any address within the bank can equally be used.
70/81
01h, D0h or 2Fh
Write FFh (1)
Write 60h (1)
Write 90h (1)
Read Block
Lock States
confirmed?
Locking
change
Write
Start
End
YES
NO
locking_operation_command (address, lock_operation) {
}
writeToFlash (address, 0xFF) ; /*Reset to Read Array mode*/
writeToFlash (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 (address, 0x90) ;
/*Check the locking state (see Read Block Signature table )*/
error_handler () ;
/*see note (1) */
/*see note (1) */
/* see note (1) */
AI06176b