OB_SPC OB_SPC 0x0 0x8 read-write 0xA5 FFFF OB_SPC Option byte security protection code Option byte security protection code 0xA5: No protection#x000A;Any value except 0xA5 or 0xCC: Protection level low 0xCC: Protection level high 0 8 OB_SPC_N OB_SPC_N 0x1 0x8 read 0x5A 0 OB_SPC_N OB_SPC complement value OB_SPC complement value 0 8 OB_USER OB_USER 0x2 0x8 read-write 0xFF FFFF NRST_MDSEL NRST_MDSEL NRST_MDSEL 0: PB11 PAD as GPIO 1: PB11 PAD as reset pin 7 1 SRAM_PARITY_ECC_CHECK sram parity check SRAM_PARITY_ECC_CHECK 0: Enable SRAM parity check, disable SRAM ECC 1: Disable SRAM parity check, enable SRAM ECC 6 1 VDDA_VISOR VDDA monitor VDDA_VISOR 0: Disable VDDA monitor 1: Enable VDDA monitor 5 1 BOOT1_n Boot1 configuration BOOT1_n 0: BOOT1 bit is 1 1: BOOT1 bit is 0 4 1 nRST_STDBY Generate a reset instead of entering standby mode nRST_STDBY 0: generate a reset instead of entering standby mode 1: no reset when entering standby mode 2 1 nRST_DPSLP Generate a reset instead of entering Deep-sleep mode nRST_DPSLP 0: generate a reset instead of entering Deep-sleep mode 1: no reset when entering Deep-sleep mode 1 1 nWDG_SW Software free watchdog nWDG_SW 0: Hardware free watchdog timer 1: Software free watchdog timer 0 1 OB_USER_N OB_USER_N 0x3 0x8 read 0x00 0 OB_USER_N OB_USER complement value OB_USER complement value 0 8 OB_DATA[7:0] OB_DATA[7:0] 0x4 0x8 read-write 0xFF FFFF OB_DATA[7:0] user defined data bit 7 to 0 user defined data bit 7 to 0 0 8 OB_DATA_N[7:0] OB_DATA_N[7:0] 0x5 0x8 read 0x00 0 OB_DATA_N[7:0] OB_DATA complement value bit 7 to 0 OB_DATA complement value bit 7 to 0 0 8 OB_DATA[15:8] OB_DATA[15:8] 0x6 0x8 read-write 0xFF FFFF OB_DATA[15:8] user defined data bit 15 to 8 user defined data bit 15 to 8 0 8 OB_DATA_N[15:8] OB_DATA_N[15:8] 0x7 0x8 read 0x00 0 OB_DATA_N[15:8] OB_DATA complement value bit 15 to 8 OB_DATA complement value bit 15 to 8 0 8 OB_WP[7:0] OB_WP[7:0] 0x8 0x8 read-write 0xFF FFFF OB_WP[7] 0x08007000~0x08007FFF Page Erase/Program Protection bit 7(0x08007000~0x08007FFF) 0: protection active 1: unprotected 7 1 OB_WP[6] 0x08006000~0x08006FFF Page Erase/Program Protection bit 6(0x08006000~0x08006FFF) 0: protection active 1: unprotected 6 1 OB_WP[5] 0x08005000~0x08005FFF Page Erase/Program Protection bit 5(0x08005000~0x08005FFF) 0: protection active 1: unprotected 5 1 OB_WP[4] 0x08004000~0x08004FFF Page Erase/Program Protection bit 4(0x08004000~0x08004FFF) 0: protection active 1: unprotected 4 1 OB_WP[3] 0x08003000~0x08003FFF Page Erase/Program Protection bit 3(0x08003000~0x08003FFF) 0: protection active 1: unprotected 3 1 OB_WP[2] 0x08002000~0x08002FFF Page Erase/Program Protection bit 2(0x08002000~0x08002FFF) 0: protection active 1: unprotected 2 1 OB_WP[1] 0x08001000~0x08001FFF Page Erase/Program Protection bit 1(0x08001000~0x08001FFF) 0: protection active 1: unprotected 1 1 OB_WP[0] 0x08000000~0x08000FFF Page Erase/Program Protection bit 0(0x08000000~0x08000FFF) 0: protection active 1: unprotected 0 1 OB_WP_N[7:0] OB_WP_N[7:0] 0x9 0x8 read 0x00 0 OB_WP_N[7:0] OB_WP complement value bit 7 to 0 OB_WP complement value bit 7 to 0 0 8 OB_WP[15:8] OB_WP[15:8] 0xA 0x8 read-write 0xFF FFFF OB_WP[15] 0x0800F000~0x0800FFFF Page Erase/Program Protection bit 15(0x0800F000~0x0800FFFF) 0: protection active 1: unprotected 7 1 OB_WP[14] 0x0800E000~0x0800EFFF Page Erase/Program Protection bit 14(0x0800E000~0x0800EFFF) 0: protection active 1: unprotected 6 1 OB_WP[13] 0x0800D000~0x0800DFFF Page Erase/Program Protection bit 13(0x0800D000~0x0800DFFF) 0: protection active 1: unprotected 5 1 OB_WP[12] 0x0800C000~0x0800CFFF Page Erase/Program Protection bit 12(0x0800C000~0x0800CFFF) 0: protection active 1: unprotected 4 1 OB_WP[11] 0x0800B000~0x0800BFFF Page Erase/Program Protection bit 11(0x0800B000~0x0800BFFF) 0: protection active 1: unprotected 3 1 OB_WP[10] 0x0800A000~0x0800AFFF Page Erase/Program Protection bit 10(0x0800A000~0x0800AFFF) 0: protection active 1: unprotected 2 1 OB_WP[9] 0x08009000~0x08009FFF Page Erase/Program Protection bit 9(0x08009000~0x08009FFF) 0: protection active 1: unprotected 1 1 OB_WP[8] 0x08008000~0x08008FFF Page Erase/Program Protection bit 8(0x08008000~0x08008FFF) 0: protection active 1: unprotected 0 1 OB_WP_N[15:8] OB_WP_N[15:8] 0xB 0x8 read 0x00 0 OB_WP_N[15:8] OB_WP complement value bit 15 to 8 OB_WP complement value bit 15 to 8 0 8 OTP OTP 0x20 0x20 0x0 0x01 0x1FFF7000 0x1FFF73FF OTP_Block OTP_Block 0x1FFF7000 0x1FFF73FF 0x0 0x400 0x00 0 0