Datasheet

73
ATmega169A/PA/329A/PA/649A/P/3290A/PA/6490A/P [DATASHEET]
8284E–AVR–02/2013
14.3.1 Alternate functions of Port A
The Port A has an alternate function as COM0:3 and SEG0:3 for the LCD Controller.
Table 14-4 and Table 14-5 relates the alternate functions of Port A to the overriding signals shown in Figure 14-5
on page 71.
Table 14-3. Port A pins alternate functions.
Port pin Alternate function
PA7 SEG (LCD Front Plane 3)
PA6 SEG (LCD Front Plane 2)
PA5 SEG (LCD Front Plane 1)
PA4 SEG (LCD Front Plane 0)
PA3 COM (LCD Back Plane 3)
PA2 COM (LCD Back Plane 2)
PA1 COM (LCD Back Plane 1)
PA0 COM (LCD Back Plane 0)
Table 14-4. Overriding signals for alternate functions in PA7:PA4.
Signal name PA7/SEG3 PA6/SEG2 PA5/SEG1 PA4/SEG0
PUOE LCDEN LCDEN LCDEN LCDEN
PUOV0000
DDOE LCDEN LCDEN LCDEN LCDEN
DDOV0000
PVOE0000
PVOV0000
PTOE––––
DIEOE LCDEN LCDEN LCDEN LCDEN
DIEOV0000
DI––––
AIO LCDSEG LCDSEG LCDSEG LCDSEG