m28w160ecb STMicroelectronics, m28w160ecb Datasheet - Page 45
m28w160ecb
Manufacturer Part Number
m28w160ecb
Description
16 Mbit 1mb X16, Boot Block 3v Supply Flash Memory
Manufacturer
STMicroelectronics
Datasheet
1.M28W160ECB.pdf
(50 pages)
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Quantity
Price
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Manufacturer:
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Manufacturer:
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Figure 22. Locking Operations Flowchart and Pseudo Code
01h, D0h or 2Fh
Read Block
Lock States
confirmed?
Write FFh
Write 60h
Write 90h
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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