ATMEGA325-16AJ ATMEL [ATMEL Corporation], ATMEGA325-16AJ Datasheet - Page 62

• Manufacturer Part Number: ATMEGA325-16AJ
• Description: 8-bit Microcontroller with In-System Programmable Flash
• Manufacturer: ATMEL [ATMEL Corporation]

Alternate Functions of Port D
62
ATmega325/3250/645/6450
The Port D pins with alternate functions are shown in Table 29.
Table 29. Port D Pins Alternate Functions
The alternate pin configuration is as follows:
• INT0 – Port D, Bit 1
INT0, External Interrupt Source 0. The PD1 pin can serve as an external interrupt
source to the MCU.
• ICP1 – Port D, Bit 0
ICP1 – Input Capture pin1: The PD0 pin can act as an Input Capture pin for
Timer/Counter1.
Table 30 relates the alternate functions of Port D to the overriding signals shown in Fig-
ure 26 on page 57.
Table 30. Overriding Signals for Alternate Functions in PD3..PD0
Signal
Name
PUOE
PUOV
DDOE
DDOV
PVOE
PVOV
PTOE
DIEOE
DIEOV
DI
AIO
Port Pin
PD7
PD6
PD5
PD4
PD3
PD2
PD1
PD0
Alternate Function
-
-
-
-
-
-
INT0 (External Interrupt0 Input)
ICP1 (Timer/Counter1 Input Capture pin)
PD3
0
0
0
0
0
0
–
0
0
–
–
PD2
0
0
0
0
0
0
–
0
0
–
–
PD1/INT0
0
0
0
0
0
0
–
INT0 ENABLE
INT0 ENABLE
INT0 INPUT
–
PD0/ICP1
0
0
0
0
0
0
–
0
0
ICP1 INPUT
–
2570A–AVR–09/04