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STLUX385ATR Datasheet(PDF) 56 Page - STMicroelectronics |
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STLUX385ATR Datasheet(HTML) 56 Page - STMicroelectronics |
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56 / 99 page  Option bytes STLUX385A 56/98 DocID024387 Rev 2 8.2 Option byte register description The option byte registers are mapped inside the E²PROM data region. ROP (memory read-out protection register) Bit 7-0: ROP[7:0] memory read-out protection: 0xAA: enable read-out protection. When read-out protection is enabled, reading or modifying the Flash program memory and DATA area in ICP mode (using the SWIM interface) is forbidden, whatever the write protection settings are. UBC (UBC user boot code reg.) Bit 7-0: UBC[7:0] user boot code write protection memory size: 0x00: no UBC, no Flash memory write-protection 0x01: pages 0 to 1 defined as UBC; 1 Kbyte memory write-protected (0x00.8000- 0x00.83FF) 0x02: pages 0 to 3 defined as UBC; 2 Kbyte memory write-protected (0x00.8000- 0x00.87FF) 0x03: pages 0 to 4 defined as UBC; 2.5 Kbyte memory write-protected (0x00.8000- 0x00.89FF) ... 0x3E: pages 0 to 63 defined as UBC; 32 Kbyte memory write-protected (0x00.8000- 0x00.FFFF) Other values: reserved Offset: 0x004800 Default value: 0x00 7 6543 210 ROP [7:0] r/w Offset: 0x004801 Default value: 0x00 7 6543 210 UBC [7:0] r/w |
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