Datasheet

ManualsBrandsMICROCHIP TECHNOLOGY ManualsMicrocontrollers, Microprocessors & QuartzesEmbedded microcontroller TQFP 100 (14x14) 8-Bit 16 MHz I/O number 86

ATmega640/V-1280/V-1281/V-2560/V-2561/V [SUMMARY]

2549QS–AVR–02/2014

Figure 1-3. Pinout ATmega1281/2561

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.

(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

(OC0B) PG5

(SCK/ PCINT1) PB1

(MOSI/ PCINT2) PB2

(MISO/ PCINT3) PB3

(OC2A/ PCINT4) PB4

(OC1A/PCINT5) PB5

(OC1B/PCINT6) PB6

(OC0A/OC1C/

PCINT7

) PB7

(TOSC2) PG3

(TOSC1) PG4

RESET

VCC

GND

XTAL2

XTAL1

(SCL/INT0) PD0

(SDA/INT1) PD1

(RXD1/INT2) PD2

(TXD1/INT3) PD3

(ICP1) PD4

(XCK1) PD5

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)

AVCC

GND

AREF

PF0 (ADC0)

PF1 (ADC1)

PF2 (ADC2)

PF3 (ADC3)

PF4 (ADC4/TCK)

PF5 (ADC5/TMS)

PF6 (ADC6/TDO)

PF7 (ADC7/TDI)

GND

VCC

PA0 (AD0)

PA1 (AD1)

PA2 (AD2)

(T1) PD6

(T0) PD7

INDEX CORNER