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DOC4106 数据表(PDF) 7 Page - ATMEL Corporation |
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DOC4106 数据表(HTML) 7 Page - ATMEL Corporation |
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7 / 47 page ![]() 7 AT8xC51SND1C 4106F–8051–10/02 Table 7. UART Signal Description Signal Name Type Description Alternate Function RXD I/O Receive Serial Data RXD sends and receives data in serial I/O mode 0 and receives data in serial I/O modes 1, 2 and 3. P3.0 TXD O Transmit Serial Data TXD outputs the shift clock in serial I/O mode 0 and transmits data in serial I/O modes 1, 2 and 3. P3.1 Table 8. SPI Controller Signal Description Signal Name Type Description Alternate Function MISO I/O SPI Master Input Slave Output Data Line When in master mode, MISO receives data from the slave peripheral. When in slave mode, MISO outputs data to the master controller. P4.0 MOSI I/O SPI Master Output Slave Input Data Line When in master mode, MOSI outputs data to the slave peripheral. When in slave mode, MOSI receives data from the master controller. P4.1 SCK I/O SPI Clock Line When in master mode, SCK outputs clock to the slave peripheral. When in slave mode, SCK receives clock from the master controller. P4.2 SS I SPI Slave Select Line When in controlled slave mode, SS enables the slave mode. P4.3 Table 9. TWI Controller Signal Description Signal Name Type Description Alternate Function SCL I/O TWISerialClock When TWI controller is in master mode, SCL outputs the serial clock to the slave peripherals. When TWI controller is in slave mode, SCL receives clock from the master controller. P1.6 SDA I/O TWISerialData SDA is the bi-directional TWI data line. P1.7 Table 10. A/D Converter Signal Description Signal Name Type Description Alternate Function AIN1:0 I A/D Converter Analog Inputs - AREFP I Analog Positive Voltage Reference Input - AREFN I Analog Negative Voltage Reference Input This pin is internally connected to AVSS. - |
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