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ST7262 数据表(PDF) 33 Page - STMicroelectronics |
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ST7262 数据表(HTML) 33 Page - STMicroelectronics |
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33 / 132 page  ST7262 33/132 I/O PORTS (Cont’d) 9.2.5 Port A Table 9. Port A Description Figure 26. PA[7:0] Configuration PORT A I/O Alternate Function Input* Output Signal Condition PA0 floating push-pull USBOE USBOE = 1 (MISC) IT1 Schmitt triggered input IT1E = 1 (ITRFRE1) AIN0 (ADC) CS[2:0] = 000 (ADCCSR) PA1 floating push-pull IT2 Schmitt triggered input IT2E = 1 (ITRFRE1) AIN1 (ADC) CS[2:0] = 001 (ADCCSR) PA2 floating push-pull IT3 Schmitt triggered input IT3E = 1 (ITRFRE1) AIN2 (ADC) CS[2:0] = 010 (ADCCSR) PA3 floating push-pull IT4 Schmitt triggered input IT4E = 1 (ITRFRE1) AIN3 (ADC) CS[2:0] = 011 (ADCCSR) PA4 floating push-pull AIN4 (ADC) CS[2:0] = 100 (ADCCSR) PA5 floating push-pull AIN5 (ADC) CS[2:0] = 101 (ADCCSR) PA6 floating push-pull AIN6 (ADC) CS[2:0] = 110 (ADCCSR) PA7 floating push-pull AIN7 (ADC) CS[2:0] = 111 (ADCCSR) *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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