Datasheet

82
7766F–AVR–11/10
ATmega16/32U4
.
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
DDO E J TAG EN JTAG E N JTAG EN JTAG E N
DDOV 0
SHIFT_IR +
SHIFT_DR
00
PVOE 0 JTAGEN 0 0
PVOV 0 TDO 0 0
DI EOE JTAG E N JTAG EN JTAG EN 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 Value00000000