ATMEGA2561V ATMEL [ATMEL Corporation], ATMEGA2561V Datasheet - Page 101

• Manufacturer Part Number: ATMEGA2561V
• Description: 8-bit Microcontroller with 64K/128K/256K Bytes In-System Programmable Flash
• Manufacturer: ATMEL [ATMEL Corporation]

2549K–AVR–01/07
• PDI/RXD0/PCINT8 – Port E, Bit 0
PDI, SPI Serial Programming Data Input. During Serial Program Downloading, this pin
is used as data input line for the ATmega1281/2561. For ATmega640/1280/2560 this
function is placed on MOSI.
RXD0, USART0 Receive Pin. Receive Data (Data input pin for the USART0). When the
USART0 receiver is enabled this pin is configured as an input regardless of the value of
DDRE0. When the USART0 forces this pin to be an input, a logical one in PORTE0 will
turn on the internal pull-up.
PCINT8, Pin Change Interrupt source 8: The PE0 pin can serve as an external interrupt source.
Table 52 and Table 53 relates the alternate functions of Port E to the overriding signals
shown in Figure 36 on page 89.
Table 52. Overriding Signals for Alternate Functions PE7:PE4
Signal
Name
PUOE
PUOV
DDOE
DDOV
PVOE
PVOV
DIEOE
DIEOV
DI
AIO
PE7/INT7/ICP3
0
0
0
0
0
0
INT7 ENABLE
1
INT7 INPUT/ICP3
INPUT
–
ATmega640/1280/1281/2560/2561
PE6/INT6/T3
0
0
0
0
0
0
INT6 ENABLE
1
INT7 INPUT/T3
INPUT
–
PE5/INT5/OC3C
0
0
0
0
OC3C ENABLE
OC3C
INT5 ENABLE
1
INT5 INPUT
–
PE4/INT4/OC3B
0
0
0
0
OC3B ENABLE
OC3B
INT4 ENABLE
1
INT4 INPUT
–
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