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M58LT128HST датащи(PDF) 97 Page - STMicroelectronics

номер детали M58LT128HST
подробное описание детали  128-Mbit (8 Mb 횞16, Multiple Bank, Multilevel interface, Burst) 1.8 V supply, Secure Flash memories
PDF  110 Pages
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производитель  STMICROELECTRONICS [STMicroelectronics]
домашняя страница  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M58LT128HST датащи(HTML) 97 Page - STMicroelectronics

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 97 / 110 page
background image
M58LT128HST, M58LT128HSB
Flowcharts and pseudo codes
97/110
Figure 25.
Protect/Unprotect operation flowchart and pseudo code
1.
Any address within the bank can equally be used.
Write
01h, D0h
AI12895
Read Block
Protect State
YES
NO
Protection
change
confirmed?
Start
Write 60h (1)
protect_operation_command (address, protect_operation) {
writeToFlash (address, 0x60) ; /*configuration setup*/
/* see note (1) */
if (readFlash (address) ! = protection_state_expected)
error_handler () ;
/*Check the protection state (see Read Block Signature table )*/
writeToFlash (address, 0xFF) ; /*Reset to Read Array mode*/
/*see note (1) */
}
Write FFh (1)
Write 90h (1)
End
if (protect_operation==PROTECT) /*to protect the block*/
writeToFlash (address, 0x01) ;
else if (protect_operation==UNPROTECT) /*to unprotect the block*/
writeToFlash (address, 0xD0) ;
writeToFlash (address, 0x90) ;
/*see note (1) */



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