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ST7263 数据表(PDF) 29 Page - STMicroelectronics |
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ST7263 数据表(HTML) 29 Page - STMicroelectronics |
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29 / 109 page  ST7263 29/109 I/O PORTS (Cont’d) 5.1.5 Port B Table 11. Port B Description Figure 20. Port B Configuration PORT B I/O Alternate Function Input* Output Signal Condition PB0 without pull-up push-pull Analog input (ADC) CH[2:0] = 000 (ADCCSR) PB1 without pull-up push-pull Analog input (ADC) CH[2:0] = 001 (ADCCSR) PB2 without pull-up push-pull Analog input (ADC) CH[2:0]= 010 (ADCCSR) PB3 without pull-up push-pull Analog input (ADC) CH[2:0]= 011 (ADCCSR) PB4 without pull-up push-pull Analog input (ADC) CH[2:0]= 100 (ADCCSR) IT5 Schmitt triggered input IT4E = 1 (ITIFRE) PB5 without pull-up push-pull Analog input (ADC) CH[2:0]= 101 (ADCCSR) IT6 Schmitt triggered input IT5E = 1 (ITIFRE) PB6 without pull-up push-pull Analog input (ADC) CH[2:0]= 110 (ADCCSR) IT7 Schmitt triggered input IT6E = 1 (ITIFRE) PB7 without pull-up push-pull Analog input (ADC) CH[2:0]= 111 (ADCCSR) IT8 Schmitt triggered input IT7E = 1 (ITIFRE) *Reset State DR DDR LATCH LATCH DR SEL DDR SEL VDD PAD ANALOG SWITCH ANALOG ENABLE (ADC) ALTERNATE ENABLE ALTERNATE ENABLE DIGITAL ENABLE ALTERNATE ENABLE ALTERNATE ALTERNATE INPUT OUTPUT P-BUFFER N-BUFFER 1 0 1 0 VSS VDD DIODES |
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