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AT90SCR100 Datasheet(PDF) 378 Page - ATMEL Corporation |
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AT90SCR100 Datasheet(HTML) 378 Page - ATMEL Corporation |
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378 / 433 page  378 TPR0327AY–SMS–30Jan09 AT90SCR100 Notes: 1. Program the Fuse bits and Boot Lock bits before programming the LB1 and LB2. Table 29-2. Lock Bit Protection Modes(1) Memory Lock Bits Protection Type LB Mode LB2 LB1 1 1 1 No memory lock features enabled. 21 0 Further programming of the Flash and EEPROM is disabled in Serial Programming mode. The Fuse bits are locked in Serial Programming mode. 30 0 Further programming and verification of the Flash and EEPROM is disabled in Serial Programming mode. The Boot Lock bits and Fuse bits are locked in both Serial Programming mode. BLB0 Mode BLB02 BLB01 11 1 No restrictions for SPM or (E)LPM accessing the Application section. 2 1 0 SPM is not allowed to write to the Application section. 30 0 SPM is not allowed to write to the Application section, and (E)LPM executing from the Boot Loader section is not allowed to read from the Application section. If Interrupt Vectors are placed in the Boot Loader section, interrupts are disabled while executing from the Application section. 40 1 (E)LPM executing from the Boot Loader section is not allowed to read from the Application section. If Interrupt Vectors are placed in the Boot Loader section, interrupts are disabled while executing from the Application section. BLB1 Mode BLB12 BLB11 11 1 No restrictions for SPM or (E)LPM accessing the Boot Loader section. 2 1 0 SPM is not allowed to write to the Boot Loader section. 30 0 SPM is not allowed to write to the Boot Loader section, and (E)LPM executing from the Application section is not allowed to read from the Boot Loader section. If Interrupt Vectors are placed in the Application section, interrupts are disabled while executing from the Boot Loader section. 40 1 (E)LPM executing from the Application section is not allowed to read from the Boot Loader section. If Interrupt Vectors are placed in the Application section, interrupts are disabled while executing from the Boot Loader section. |
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