ATmega325P datasheet(3/364 Pages) ATMEL

3 / 364 page

8023F–AVR–07/09

ATmega325P/3250P

Figure 1-2.

Pinout ATmega325P

Note:

The large center pad underneath the QFN/MLF packages 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.

1.1

Disclaimer

Typical values contained in this datasheet are based on simulations and characterization of

other AVR microcontrollers manufactured on the same process technology. Min and Max values

will be available after the device is characterized.

Overview

The ATmega325P/3250P is a low-power CMOS 8-bit microcontroller based on the AVR enhanced RISC architecture. By

executing powerful instructions in a single clock cycle, the ATmega325P/3250P achieves throughputs approaching 1 MIPS

per MHz allowing the system designer to optimize power consumption versus processing speed.

PC0

(RXD/PCINT0) PE0

(TXD/PCINT1) PE1

DNC

(XCK/AIN0/PCINT2) PE2

(AIN1/PCINT3) PE3

(USCK/SCL/PCINT4) PE4

(DI/SDA/PCINT5) PE5

(DO/PCINT6) PE6

(CLKO/PCINT7) PE7

(SCK/PCINT9) PB1

(MOSI/PCINT10) PB2

(MISO/PCINT11) PB3

(OC0A/PCINT12) PB4

(OC1B/PCINT14) PB6

(OC1A/PCINT13) PB5

PC1

PG0

PC2

PC3

PC4

PC5

PC6

PC7

PA7

PG2

PA6

PA5

PA4

PA3

PG1

INDEX CORNER

(SS/PCINT8) PB0

ATmega325

ATmega325P データシート(PDF) 3 Page - ATMEL Corporation

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