82
9152BINDCO02/10
ATA8743
" Port A, Bit 6 ADC6/DI/SDA/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.
OC1A, Output Compare Match output: The PA6 pin can serve as an external output for the
Timer/Counter1 Compare Match A. The PA6 pin has to be configured as an output (DDA6 set
(one)) to serve this function. The OC1A pin 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.
OC1B, Output Compare Match output: The PA7 pin can serve as an external output for the
Timer/Counter1 Compare Match B. The PA7 pin has to be configured as an output (DDA7 set
(one)) to serve this function. The OC1B pin 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 19-4 on page 82 to Table 19-6 on page 83 relate the alternate functions of Port A to the
overriding signals shown in Figure 19-5 on page 78.
Table 19-4. Overriding Signals for Alternate Functions in PA7..PA5
Signal
Name
PA7/ADC7/OC0B/ICP1/
PCINT7
PA6/ADC6/DI/SDA/OC1A/
PCINT6
PA5/ADC5/DO/OC1B/
PCINT5
PUOE
0
0
0
PUOV
0
0
0
DDOE
0
USIWM1
0
DDOV
0
(SDA
+ PORTA6
) " DDRA6
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
0
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
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