Analog to Digital Converter, Channel 3:0.
Table 13-18. Overriding Signals for Alternate Functions in PF7:PF4
Signal
Name
PUOE
PUOV
DDOE
PF7/ADC7/TDI
JTAGEN
1
PF6/ADC6/TDO
JTAGEN
0
PF5/ADC5/TMS
JTAGEN
1
PF4/ADC4/TCK
JTAGEN
1
JTAGEN
JTAGEN
JTAGEN
JTAGEN
SHIFT_IR +
SHIFT_DR
DDOV
0
0
0
PVOE
PVOV
DIEOE
DIEOV
DI
0
JTAGEN
0
0
0
TDO
0
0
JTAGEN
JTAGEN
JTAGEN
JTAGEN
0
0
0
0
–
–
–
–
AIO
TDI/ADC7 INPUT
ADC6 INPUT
TMS/ADC5 INPUT
TCK/ADC4 INPUT
Table 13-19. Overriding Signals for Alternate Functions in PF3:PF0
Signal Name
PUOE
PUOV
DDOE
DDOV
PVOE
PVOV
DIEOE
DIEOV
DI
PF3/ADC3
PF2/ADC2
PF1/ADC1
PF0/ADC0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
–
–
–
–
AIO
ADC3 INPUT
ADC2 INPUT
ADC1 INPUT
ADC0 INPUT
13.3.7
Alternate Functions of Port G
The Port G alternate pin configuration is as follows:
Table 13-20. Port G Pins Alternate Functions
Port Pin
PG5
Alternate Function
OC0B (Output Compare and PWM Output B for Timer/Counter0)
TOSC1 (RTC Oscillator Timer/Counter2)
PG4
PG3
TOSC2 (RTC Oscillator Timer/Counter2)
PG2
ALE (Address Latch Enable to external memory)
RD (Read strobe to external memory)
PG1
PG0
WR (Write strobe to external memory)
90
ATmega640/1280/1281/2560/2561
2549L–AVR–08/07