Datasheet

87
ATmega169A/PA/329A/PA/649A/P/3290A/PA/6490A/P [DATASHEET]
8284E–AVR–02/2013
• PCINT21/SEG – Port H, Bit 5
PCINT21, Pin Change Interrupt Source 21: The PH5 pin can serve as an external interrupt source.
SEG, LCD front plane 38.
• PCINT20/SEG – Port H, Bit 4
PCINT20, Pin Change Interrupt Source 20: The PH4 pin can serve as an external interrupt source.
SEG, LCD front plane 39.
• PCINT19/SEG – Port H, Bit 3
PCINT19, Pin Change Interrupt Source 19: The PH3 pin can serve as an external interrupt source.
SEG, LCD front plane 7.
• PCINT18/SEG – Port H, Bit 2
PCINT18, Pin Change Interrupt Source 18: The PH2 pin can serve as an external interrupt source.
SEG, LCD front plane 8.
• PCINT17/SEG – Port H, Bit 1
PCINT17, Pin Change Interrupt Source 17: The P1 pin can serve as an external interrupt source.
SEG, LCD front plane 9.
• PCINT16/SEG – Port H, Bit 0
PCINT16, Pin Change Interrupt Source 16: The PH0 pin can serve as an external interrupt source.
SEG, LCD front plane 10.
Table 14-25 and Table 14-26 relates the alternate functions of Port H to the overriding signals shown in Figure 14-
5 on page 71.
Table 14-25. Overriding signals for alternate functions in PH7:4.
Signal name PH7/PCINT23/SEG36 PH6/PCINT22/SEG37 PH5/PCINT21/SEG38 PH4/PCINT20/SEG39
PUOE LCDEN LCDEN LCDEN LCDEN
PUOV0000
DDOE LCDEN LCDEN LCDEN LCDEN
DDOV 0 0 0 0
PVOE0000
PVOV0000
PTOE––––
DIEOE
PCINT23 • PCIE0
•LCDEN • LCDPM
PCINT22 • PCIE0
•LCDEN • LCDPM
PCINT21 • PCIE0
•LCDEN • LCDPM
PCINT20 • PCIE0
•LCDEN • LCDPM
DIEOV
DI PCINT23 INPUT PCINT22 INPUT PCINT21 INPUT PCINT20 INPUT
AIO
(1)
1. Applies to Atmel ATmega169A/169PA.
SEG24 SEG4 SEG13 SEG14
AIO
(2)
2. Applies to Atmel ATmega329A/329PA/3290A/3290PA/649A/649P/6490A/6490P.
LCDSEG LCDSEG LCDSEG LCDSEG