Datasheet

64
8197C–AVR–05/11
ATtiny261A/461A/861A
Table 10-4 and Table 10-5 relate the alternate functions of Port A to the overriding signals
shown in Figure 10-5 on page 60.
Table 10-4. Overriding Signals for Alternate Functions in PA[7:4]
Signal
Name
PA7/ADC6/AIN0/
PCINT7
PA6/ADC5/AIN1/
PCINT6
PA5/ADC4/AIN2/
PCINT5
PA4/ADC3/ICP0/
PCINT4
PUOE0000
PUOV0000
DDOE0000
DDOV0000
PVOE0000
PVOV0000
PTOE0000
DIEOE PCINT7 • PCIE +
ADC6D
PCINT6 • PCIE +
ADC5D
PCINT5 • PCIE +
ADC4D
PCINT4 • PCIE +
ADC3D
DIEOV ADC6D
ADC5D ADC4D ADC3D
DI PCINT7 PCINT6 PCINT5 ICP0/PCINT4
AIO ADC6, AIN0 ADC5, AIN1 ADC4, AIN2 ADC3
Table 10-5. Overriding Signals for Alternate Functions in PA[3:0]
Signal
Name
PA3/AREF/
PCINT3
PA2/ADC2/INT1/
USCK/SCL/PCINT2
PA1/ADC1/DO/
PCINT1
PA0/ADC0/DI/SDA/
PCINT0
PUOE 0 0 0 0
PUOV 0 0 0 0
DDOE 0 USI_TWO_WIRE •
USIPOS
0
USI_TWO_WIRE •
USIPOS
DDOV 0 (USI_SCL_HOLD +
PORTB2
) • DDB2 •
USIPOS
0
(SDA
+ PORTB0) •
DDRB0 • USIPOS
PVOE 0 USI_TWO_WIRE •
DDRB2
USI_THREE_WI
RE • USIPOS
USI_TWO_WIRE •
DDRB0 • USIPOS
PVOV 0 0 DO • USIPOS 0
PTOE 0 USI_PTOE • USIPOS 0 0
DIEOE PCINT3 •
PCIE
PCINT2 • PCIE + INT1 +
ADC2D + USISIE •
USIPOS
PCINT1 • PCIE +
ADC1D
PCINT0 • PCIE +
ADC0D + USISIE •
USIPOS
DIEOV 0 ADC2D
ADC1D ADC0D
DI PCINT3 USCK/SCL/INT1/ PCINT2 PCINT1 DI/SDA/PCINT0
AIO AREF ADC2 ADC1 ADC0