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ATmega328P датащи(PDF) 90 Page - ATMEL Corporation |
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ATmega328P датащи(HTML) 90 Page - ATMEL Corporation |
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90 / 448 page ![]() 90 8161D–AVR–10/09 ATmega48PA/88PA/168PA/328P • INT0/PCINT18 – Port D, Bit 2 INT0, External Interrupt source 0: The PD2 pin can serve as an external interrupt source. PCINT18: Pin Change Interrupt source 18. The PD2 pin can serve as an external interrupt source. • TXD/PCINT17 – Port D, Bit 1 TXD, Transmit Data (Data output pin for the USART). When the USART Transmitter is enabled, this pin is configured as an output regardless of the value of DDD1. PCINT17: Pin Change Interrupt source 17. The PD1 pin can serve as an external interrupt source. • RXD/PCINT16 – Port D, Bit 0 RXD, Receive Data (Data input pin for the USART). When the USART Receiver is enabled this pin is configured as an input regardless of the value of DDD0. When the USART forces this pin to be an input, the pull-up can still be controlled by the PORTD0 bit. PCINT16: Pin Change Interrupt source 16. The PD0 pin can serve as an external interrupt source. Table 13-10 and Table 13-11 relate the alternate functions of Port D to the overriding signals shown in Figure 13-5 on page 80. Table 13-10. Overriding Signals for Alternate Functions PD7..PD4 Signal Name PD7/AIN1 /PCINT23 PD6/AIN0/ OC0A/PCINT22 PD5/T1/OC0B/ PCINT21 PD4/XCK/ T0/PCINT20 PUOE 000 0 PUO 000 0 DDOE 0 0 0 0 DDOV 0 0 0 0 PVOE 0 OC0A ENABLE OC0B ENABLE UMSEL PVOV 0 OC0A OC0B XCK OUTPUT DIEOE PCINT23 • PCIE2 PCINT22 • PCIE2 PCINT21 • PCIE2 PCINT20 • PCIE2 DIEOV 111 1 DI PCINT23 INPUT PCINT22 INPUT PCINT21 INPUT T1 INPUT PCINT20 INPUT XCK INPUT T0 INPUT AIO AIN1 INPUT AIN0 INPUT – – |
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