ATMEGA328P – Simplified Features

CPU

8-bit AVR

Number of Pins

28

Operating Voltage (V)

+1.8 V TO +5.5V

Number of programmable  I/O lines

23

Communication Interface

Master/Slave SPI Serial Interface(17,18,19 PINS) [Can be used for programming this controller]

Programmable Serial USART(2,3 PINS) [Can be used for programming this controller]

Two-wire Serial Interface(27,28  PINS)[Can be used to connect peripheral devices like Servos, sensors and memory devices]

JTAG Interface

Not available

ADC Module

6channels, 10-bit resolution ADC

Timer Module

Two 8-bit counters with Separate Prescaler and compare mode, One 16-bit counter with Separate Prescaler,compare mode and capture mode.

Analog Comparators

1(12,13 PINS)

DAC Module

Nil

PWM channels

6

External Oscillator

0-4MHz @ 1.8V to 5.5V

0-10MHz @ 2.7V to 5.5V

0-20MHz @ 4.5V to 5.5V

Internal Oscillator

8MHz  Calibrated Internal Oscillator

Program Memory Type

Flash

Program Memory or Flash memory

32Kbytes[10000 write/erase cycles]

CPU Speed

1MIPS for 1MHz

RAM

2Kbytes Internal SRAM

EEPROM

1Kbytes EEPROM

Watchdog Timer

Programmable Watchdog Timer with Separate On-chipOscillator

Program Lock

Yes

Power Save Modes

Six Modes[Idle, ADC Noise Reduction, Power-save, Power-down, Standby and Extended Standby]

Operating Temperature

-40°C to +105°C(+105 being absolute maximum, -40 being absolute minimum)