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ST7LITEUSX 数据表(PDF) 39 Page - STMicroelectronics |
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ST7LITEUSX 数据表(HTML) 39 Page - STMicroelectronics |
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39 / 108 page ![]() ST7LITEUSx 39/108 Figure 27. AWUFH Mode Flow-chart Notes: 1. WDGHALT is an option bit. See option byte sec- tion for more details. 2. Peripheral clocked with an external clock source can still be active. 3. Only an AWUFH interrupt and some specific in- terrupts can exit the MCU from HALT mode (such as external interrupt). Refer to Table 7, “Interrupt Mapping,” on page 26 for more details. 4. Before servicing an interrupt, the CC register is pushed on the stack. The I[1:0] bits of the CC reg- ister are set to the current software priority level of the interrupt routine and recovered when the CC register is popped. RESET INTERRUPT 3) Y N N Y CPU MAIN OSC PERIPHERALS 2) I[1:0] BITS OFF OFF 10 OFF FETCH RESET VECTOR OR SERVICE INTERRUPT CPU MAIN OSC PERIPHERALS I[1:0] BITS ON OFF XX 4) ON CPU MAIN OSC PERIPHERALS I[1:0] BITS ON ON XX 4) ON 64 CPU CLOCK DELAY WATCHDOG ENABLE DISABLE WDGHALT 1) 0 WATCHDOG RESET 1 CYCLE AWU RC OSC ON AWU RC OSC OFF AWU RC OSC OFF HALT INSTRUCTION (Active-Halt disabled) (AWUCSR.AWUEN=1) 1 |
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