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ATMEGA1281 Datasheet
8-BIT Microcontroller
ATMEL Corporation
ATMEL Corporation


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ATMEGA1281 pdf
Figure 1-3. Pinout ATmega1281/2561
(OC0B) PG5
(RXD0/PCINT8/PDI) PE0
(TXD0/PDO) PE1
(XCK0/AIN0) PE2
(OC3A/AIN1) PE3
(OC3B/INT4) PE4
(OC3C/INT5) PE5
(T3/INT6) PE6
(ICP3/CLKO/INT7) PE7
(SS/PCINT0) PB0
(SCK/ PCINT1) PB1
(MOSI/ PCINT2) PB2
(MISO/ PCINT3) PB3
(OC2A/ PCINT4) PB4
(OC1A/PCINT5) PB5
(OC1B/PCINT6) PB6
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
INDEX CORNER
48 PA3 (AD3)
47 PA4 (AD4)
46 PA5 (AD5)
45 PA6 (AD6)
44 PA7 (AD7)
43 PG2 (ALE)
42 PC7 (A15)
41 PC6 (A14)
40 PC5 (A13)
39 PC4 (A12)
38 PC3 (A11)
37 PC2 (A10)
36 PC1 (A9)
35 PC0 (A8)
34 PG1 (RD)
33 PG0 (WR)
Note:
The large center pad underneath the QFN/MLF package is made of metal and internally connected to GND. It should
be soldered or glued to the board to ensure good mechanical stability. If the center pad is left unconnected, the pack-
age might loosen from the board.
ATmega640/V-1280/V-1281/V-2560/V-2561/V [DATASHEET]
2549Q–AVR–02/2014
4

ATMEGA1281 Datasheet PDF


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