ATMEGA2561V ATMEL [ATMEL Corporation], ATMEGA2561V Datasheet - Page 109
ATMEGA2561V
Manufacturer Part Number
ATMEGA2561V
Description
8-bit Microcontroller with 64K/128K/256K Bytes In-System Programmable Flash
Manufacturer
ATMEL [ATMEL Corporation]
Datasheet
1.ATMEGA2561V.pdf
(449 pages)
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Alternate Functions of Port J
2549K–AVR–01/07
The Port J alternate pin configuration is as follows:
Table 63. Port J Pins Alternate Functions
• PCINT15:12 - Port J, Bit 6:3
PCINT15:12, Pin Change Interrupt Source 15:12. The PJ6:3 pins can serve as External
Interrupt Sources
• XCK2/PCINT11 - Port J, Bit 2
XCK2, USART 2 External Clock. The Data Direction Register (DDJ2) controls whether
the clock is output (DDJ2 set) or input (DDJ2 cleared). The XCK2 pin is active only when
the USART2 operates in synchronous mode.
PCINT11, Pin Change Interrupt Source 11. The PJ2 pin can serve as External Interrupt
Sources
• TXD3/PCINT10 - Port J, Bit 1
TXD3, USART3 Transmit pin
PCINT10, Pin Change Interrupt Source 10. The PJ1 pin can serve as External Interrupt
Sources
• RXD3/PCINT9 - Port J, Bit 0
RXD3, USART3 Receive pin. Receive Data (Data input pin for the USART3). When the
USART3 Receiver is enabled, this pin is configured as an input regardless of the value
of DDJ0. When the USART3 forces this pin to be an input, a logical one in PORTJ0 will
turn on the internal pull-up.
PCINT9, Pin Change Interrupt Source 9. The PJ0 pin can serve as External Interrupt
Sources
Table 64 and Table 65 relates the alternate functions of Port J to the overriding signals
shown in Figure 36 on page 89
Port Pin
PJ7
PJ6
PJ5
PJ4
PJ3
PJ2
PJ1
PJ0
Alternate Function
–
PCINT15 (Pin Change Interrupt 15)
PCINT14 (Pin Change Interrupt 14)
PCINT13 (Pin Change Interrupt 13)
PCINT12 (Pin Change Interrupt 12)
XCK3/PCINT11 (USART3 External Clock or Pin Change Interrupt 11)
TXD3/PCINT10 (USART3 Transmit Pin or Pin Change Interrupt 10)
RXD3/PCINT9 (USART3 Receive Pin or Pin Change Interrupt 9)
ATmega640/1280/1281/2560/2561
109
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