ATMEGA1281V ATMEL [ATMEL Corporation], ATMEGA1281V Datasheet - Page 4

• Manufacturer Part Number: ATMEGA1281V
• Description: 8-bit Atmel Microcontroller with 64K/128K/256K Bytes In-System Programmable Flash
• Manufacturer: ATMEL [ATMEL Corporation]

Figure 1-3.
2549NS–AVR–05/11
(RXD0/PCINT8/PDI) PE0
(ICP3/CLKO/INT7) PE7
(OC2A/ PCINT4) PB4
(MOSI/ PCINT2) PB2
(MISO/ PCINT3) PB3
(OC1A/PCINT5) PB5
(OC1B/PCINT6) PB6
(SCK/ PCINT1) PB1
(OC3A/AIN1) PE3
(OC3C/INT5) PE5
(SS/PCINT0) PB0
(OC3B/INT4) PE4
(XCK0/AIN0) PE2
(TXD0/PDO) PE1
(T3/INT6) PE6
Pinout ATmega1281/2561
(OC0B) PG5
Note:
10
11
12
13
14
15
16
1
2
3
4
5
6
7
8
9
The large center pad underneath the QFN/MLF package is made of metal and internally con-
nected to GND. It should be soldered or glued to the board to ensure good mechanical stability. If
the center pad is left unconnected, the package might loosen from the board.
INDEX CORNER
ATmega640/1280/1281/2560/2561
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
PA3 (AD3)
PA4 (AD4)
PA5 (AD5)
PA6 (AD6)
PA7 (AD7)
PG2 (ALE)
PC7 (A15)
PC6 (A14)
PC5 (A13)
PC4 (A12)
PC3 (A11)
PC2 (A10)
PC1 (A9)
PC0 (A8)
PG1 (RD)
PG0 (WR)
4