Datasheet

60
ATmega8(L)
2486M–AVR–12/03
PC1 can also be used as ADC input Channel 1. Note that ADC input channel 1 uses
analog power.
• ADC0 – Port C, Bit 0
PC0 can also be used as ADC input Channel 0. Note that ADC input channel 0 uses
analog power.
Table 26 and Table 27 relate the alternate functions of Port C to the overriding signals
shown in Figure 25 on page 54.
Note: 1. When enabled, the Two-wire Serial Interface enables slew-rate controls on the output
pins PC4 and PC5. This is not shown in the figure. In addition, spike filters are con-
nected between the AIO outputs shown in the port figure and the digital logic of the
TWI module.
Table 26. Overriding Signals for Alternate Functions in PC6..PC4
Signal Name PC6/RESET PC5/SCL/ADC5 PC4/SDA/ADC4
PUOE RSTDISBL TWEN TWEN
PUOV 1 PORTC5 • PUD PORTC4 • PUD
DDOE RSTDISBL TWEN TWEN
DDOV 0 SCL_OUT SDA_OUT
PVOE 0 TWEN TWEN
PVOV 0 0 0
DIEOE RSTDISBL 0 0
DIEOV 0 0 0
DI – – –
AIO RESET INPUT ADC5 INPUT / SCL INPUT ADC4 INPUT / SDA INPUT
Table 27. Overriding Signals for Alternate Functions in PC3..PC0
(1)
Signal Name PC3/ADC3 PC2/ADC2 PC1/ADC1 PC0/ADC0
PUOE 0 0 0 0
PUOV 0 0 0 0
DDOE 0 0 0 0
DDOV 0 0 0 0
PVOE 0 0 0 0
PVOV 0 0 0 0
DIEOE 0 0 0 0
DIEOV 0 0 0 0
DI – – – –
AIO ADC3 INPUT ADC2 INPUT ADC1 INPUT ADC0 INPUT