m28w160c Numonyx, m28w160c Datasheet - Page 45
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m28w160c
Manufacturer Part Number
m28w160c
Description
16 Mbit 1mb X16, Boot Block 3v Supply Flash Memory
Manufacturer
Numonyx
Datasheet
1.M28W160C.pdf
(50 pages)
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Figure 22. 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 () ;
M28W160CT, M28W160CB
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