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STM8AP5X2ATAY 数据表(PDF) 52 Page - STMicroelectronics |
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STM8AP5X2ATAY 数据表(HTML) 52 Page - STMicroelectronics |
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52 / 100 page  Option bytes STM8AF61xx, STM8AF51xx 52/100 OPT3 LSI_EN: Low speed internal clock enable 0: LSI clock is not available as CPU clock source 1: LSI clock is available as CPU clock source IWDG_HW: Independent watchdog 0: IWDG Independent watchdog activated by software 1: IWDG Independent watchdog activated by hardware WWDG_HW: Window watchdog activation 0: WWDG window watchdog activated by software 1: WWDG window watchdog activated by hardware WWDG_HALT: Window watchdog reset on halt 0: No reset generated on halt if WWDG active 1: Reset generated on halt if WWDG active OPT4 EXTCLK: External clock selection 0: External crystal connected to OSCIN/OSCOUT 1: External clock signal on OSCIN CKAWUSEL: Auto wake-up unit/clock 0: LSI clock source selected for AWU 1: HSE clock with prescaler selected as clock source for for AWU PRSC[1:0]: AWU clock prescaler 00: 24 MHz to 128 kHz prescaler 01: 16 MHz to 128 kHz prescaler 10: 8 MHz to 128 kHz prescaler 11: 4 MHz to 128 kHz prescaler OPT5 HSECNT[7:0]: HSE crystal oscillator stabilization time This configures the stabilisation time to 0, 16, 256, 4096 HSE cycles. OPT6 TMU[3:0]: Enable temporary memory unprotection 0101: Read-out protection can be temporary disabled using a key sequence. Any other value: Permanent ROP OPT7 WAIT STATE: Wait state configuration This option configures the number of wait states inserted when reading from the Flash/data EEPROM memory. 0: No wait state 1: One wait state OPT8 TMU_KEY 0 [7:0]: Temporary unprotection key 0 Temporary unprotection key: Must be different from 00h or FFh OPT9 TMU_KEY 1 [7:0]: Temporary unprotection key 1 Temporary unprotection key: Must be different from 00h or FFh OPT10 TMU_KEY 2 [7:0]: Temporary unprotection key 2 Temporary unprotection key: Must be different from 00h or FFh OPT11 TMU_KEY 3 [7:0]: Temporary unprotection key 3 Temporary unprotection key: Must be different from 00h or FFh Table 13. Option byte description (continued) Option byte no. Description |
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