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M58LT256JST Datasheet(PDF) 93 Page - STMicroelectronics |
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M58LT256JST Datasheet(HTML) 93 Page - STMicroelectronics |
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93 / 106 page  M58LT256JST, M58LT256JSB Flowcharts and pseudocodes 93/106 Figure 25. Protect/Unprotect operation flowchart and pseudocode 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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