M28W640HCT70N6E NUMONYX, M28W640HCT70N6E Datasheet - Page 65
M28W640HCT70N6E
Manufacturer Part Number
M28W640HCT70N6E
Description
TSOP-1 48 12X20 CUSTD FLASH
Manufacturer
NUMONYX
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
M28W640HCT70N6E
Manufacturer:
JRC
Quantity:
9 100
M28W640HCT, M28W640HCB
Figure 21. Locking operations flowchart and pseudocode
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 () ;
Flowcharts and pseudocodes
AI04364
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