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ATmega16U4 Datasheet(PDF) 81 Page - ATMEL Corporation |
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ATmega16U4 Datasheet(HTML) 81 Page - ATMEL Corporation |
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81 / 408 page  81 7766D–AVR–01/09 ATmega16U4/ATmega32U4 . 10.4 Register Description for I/O-Ports 10.4.1 Port B Data Register – PORTB Table 10-14. Overriding Signals for Alternate Functions in PF7..PF4 Signal Name PF7/ADC7/TDI PF6/ADC6/TDO PF5/ADC5/TMS PF4/ADC4/TCK PUOE JTAGEN JTAGEN JTAGEN JTAGEN PUOV 1 0 1 1 DDOE JTAGEN JTAGEN JTAGEN JTAGEN DDOV 0 SHIFT_IR + SHIFT_DR 00 PVOE 0 JTAGEN 0 0 PVOV 0 TDO 0 0 DIEOE JTAGEN JTAGEN JTAGEN JTAGEN DIEOV 0 0 0 0 DI – – – – AIO TDI/ADC7 INPUT ADC6 INPUT TMS/ADC5 INPUT TCK/ADC4 INPUT Table 10-15. Overriding Signals for Alternate Functions in PF1..PF0 Signal Name PF1/ADC1 PF0/ADC0 PUOE 0 0 PUOV 0 0 DDOE 0 0 DDOV 0 0 PVOE 0 0 PVOV 0 0 DIEOE 0 0 DIEOV 0 0 DI – – AIO ADC1 INPUT ADC0 INPUT Bit 76543210 PORTB 7 PORTB 6 PORTB 5 PORTB 4 PORTB 3 PORTB 2 PORTB 1 PORTB 0 PORTB Read/Write R/W R/W R/W R/W R/W R/W R/W R/W Initial Value 00000000 |
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