ATMEGA328P-UP: The Versatile and Powerful Microcontroller


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ATMEGA328P-UP Microcontroller

ATMEGA328P Microcontroller is high performance, low power controller from Microchip. The ATMega328P-UP is 8-bits microcontroller based on AVR RISC architecture. The most popular of all AVR controllers due to the usage in Arduino boards


ATMega328P-UP – 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
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)


Note: Complete technical details can be found in the ATMega328P-UP Datasheet.

Click here to read more about the ATMega328P-PU Microcontroller


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