63
8006K–AVR–10/10
ATtiny24/44/84
Port A, Bit 6 – ADC6/DI/SDA/MOSI/OC1A/PCINT6
ADC6: Analog to Digital Converter, Channel 6.
SDA: Two-wire mode Serial Interface Data.
DI: Data Input in USI Three-wire mode. USI Three-wire mode does not override normal port
functions, so pin must be configure as an input for DI function.
MOSI: Master Data output, Slave Data input for SPI channel. When the SPI is enabled as a
Slave, this pin is configured as an input regardless of the setting of DDA6. When the SPI is
enabled as a Master, the data direction of this pin is controlled by DDA6. When the pin is
forced by the SPI to be an input, the pull-up can still be controlled by the PORTA6 bit.
OC1A, Output Compare Match output: The PA6 pin can serve as an external output for the
Timer/Counter1 Compare Match A. The pin has to be configured as an output (DDA6 set
(one)) to serve this function. This is also the output pin for the PWM mode timer function.
PCINT6: Pin Change Interrupt source 6. The PA6 pin can serve as an external interrupt
source for pin change interrupt 0.
Port A, Bit 7 – ADC7/OC0B/ICP1/PCINT7
ADC7: Analog to Digital Converter, Channel 7.
OC0B, Output Compare Match output: The PA7 pin can serve as an external output for the
Timer/Counter0 Compare Match B. The pin has to be configured as an output (DDA7 set
(one)) to serve this function. This is also the output pin for the PWM mode timer function.
ICP1, Input Capture Pin: The PA7 pin can act as an Input Capture Pin for Timer/Counter1.
PCINT7: Pin Change Interrupt source 7. The PA7 pin can serve as an external interrupt
source for pin change interrupt 0.
Table 10-4.
Overriding Signals for Alternate Functions in PA7:PA5
Signal
Name
PA7/ADC7/OC0B/ICP1/
PCINT7
PA6/ADC6/DI/SDA/MOSI/
OC1A/ PCINT6
PA5/ADC5/MISO/DO/
OC1B/ PCINT5
PUOE
0
PUOV
0
DDOE
0
USIWM1
0
DDOV
0
(SDA + PORTA6) DDA6
0
PVOE
OC0B enable
(USIWM1
DDA6) +
OC1A enable
(USIWM1
USIWM0) + OC1B
enable
PVOV
OC0B
( USIWM1
DDA6) OC1A
USIWM1
USIWM0 DO +
(USIWM1
+ USIWM0) OC1B
PTOE
0
DIEOE
PCINT7 PCIE0 + ADC7D
USISIE + (PCINT6
PCIE0) + ADC6D
PCINT5 PCIE + ADC5D
DIEOV
PCINT7 PCIE0
USISIE + PCINT7 PCIE0
PCINT5 PCIE
DI
PCINT7/ICP1 Input
DI/SDA/PCINT6 Input
PCINT5 Input
AIO
ADC7 Input
ADC6 Input
ADC5 Input