ATMEGA640 datasheet(4/436 Pages) MICROCHIP

Part #	ATMEGA640

Description	8-bit Microcontroller with 16/32/64KB In-System Programmable Flash

PDF	436 Pages

Scroll/Zoom	100%

Manufacturer	MICROCHIP [Microchip Technology]

Direct Link	http://www.microchip.com

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4 / 436 page

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

DS40002211A

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

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)

INDEX CORNER

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