Datasheet

85
8018P–AVR–08/10
ATmega169P
13.3.7 Alternate Functions of Port G
The alternate pin configuration is as follows:
Note: 1. Port G, PG5 is input only. Pull-up is always on.
See Table 27-3 on page 297 for RSTDISBL fuse.
The alternate pin configuration is as follows:
• RESET
– Port G, Bit 5
RESET
: External Reset input. When the RSTDISBL Fuse is programmed (‘0’), PG5 will function
as input with pull-up always on.
• T0/SEG23 – Port G, Bit 4
T0, Timer/Counter0 Counter Source.
SEG23, LCD front plane 23
• T1/SEG24 – Port G, Bit 3
T1, Timer/Counter1 Counter Source.
SEG24, LCD front plane 24
Table 13-20. Overriding Signals for Alternate Functions in PF3:PF0
Signal
Name PF3/ADC3 PF2/ADC2 PF1/ADC1 PF0/ADC0
PUOE0000
PUOV0000
DDOE0000
DDOV0000
PVOE0000
PVOV0000
PTOE––––
DIEOE0000
DIEOV0000
DI––––
AIO ADC3 INPUT ADC2 INPUT ADC1 INPUT ADC0 INPUT
Table 13-21. Port G Pins Alternate Functions
(1)
Port Pin Alternate Function
PG5 RESET
PG4 T0/SEG23 (Timer/Counter0 Clock Input or LCD Front Plane 23)
PG3 T1/SEG24 (Timer/Counter1 Clock Input or LCD Front Plane 24)
PG2 SEG4 (LCD Front Plane 4)
PG1 SEG13 (LCD Front Plane 13)
PG0 SEG14 (LCD Front Plane 14)