ATMEGA328P-PU Microcontroller: Features, Pinout, and Datasheet

The ATMEGA328P-PU  is a CMOS 8-bit microcontroller based on the AVR ® improved RISC architecture with reduced power consumption. The devices achieve CPU throughput approaching one million instructions per second (MIPS) per megahertz by executing instructions in a single clock cycle, allowing the system designer to optimize power consumption versus processing performance.

The picoPower 8bit AVR  RISC   -based microcontroller features 32KB ISP flash memory with read-while-write capabilities, 1024B EEPROM, 2KB SRAM, 23 general-purpose I/O lines, 32 general-purpose working registers, three flexible timer/counters with compare modes, internal and external interrupts, serial programmable USART, a byte-oriented 2-wire serial interface, SPI serial port, a 6-channel 10-bit A/D converter (8- The device works with a voltage range of 1.8 to 5.5 volts.

The following figure is ATMEGA328P-PU Pinout.

The following figures are ATMEGA328P-PU Symbol, Footprint and 3D Model.

Symbol

Footprint

3D Model

• High Performance, Low Power AVR®  8-Bit  Microcontroller Family

• Advanced RISC Architecture

̶ 131 Powerful Instructions – Most Single Clock Cycle Execution

̶ 32 x 8 General Purpose Working Registers

̶ Fully Static Operation

̶ Up to 20 MIPS Throughput at 20MHz

̶ On-chip 2-cycle Multiplier

• High Endurance Non-volatile Memory Segments

̶ 4/8/16/32KBytes of In-System Self-Programmable Flash program memory

̶ 256/512/512/1KBytes EEPROM

̶ 512/1K/1K/2KBytes Internal SRAM

̶ Write/Erase Cycles: 10,000 Flash/100,000 EEPROM

̶ Data retention: 20 years at 85°C/100 years at 25°C(1)

̶ Optional Boot Code Section with Independent Lock Bits

· In-System Programming by On-chip Boot Program

· True Read-While-Write Operation

̶ Programming Lock for Software Security

• QTouch® library support

̶ Capacitive touch buttons, sliders and wheels

̶ QTouch and QMatrix™ acquisition

̶ Up to 64 sense channels

• Peripheral Features

̶ Two 8-bit  Timer /Counters with Separate Prescaler and Compare Mode

̶ One 16-bit Timer/Counter with Separate Prescaler, Compare Mode, and Capture Mode

̶  Real Time  Counter with Separate Oscillator

̶ Six PWM Channels

̶ 8-channel 10-bit  ADC  in  TQFP  and  QFN /MLF package

· Temperature Measurement

̶ 6-channel 10-bit ADC in  PDIP Package 

· Temperature Measurement

̶ Programmable Serial USART

̶ Master/Slave SPI Serial Interface

̶ Byte-oriented 2-wire Serial Interface (Philips I2C compatible)

̶ Programmable Watchdog Timer with Separate On-chip Oscillator

̶ On-chip Analog Comparator

̶ Interrupt and Wake-up on Pin Change

• Special Microcontroller Features

̶  Power-on Reset  and Programmable Brown-out Detection

̶ Internal Calibrated Oscillator

̶ External and Internal Interrupt Sources

̶ Six Sleep Modes: Idle, ADC Noise Reduction, Power-save, Power-down, Standby, and Extended Standby

•  I/O  and Packages

̶ 23 Programmable I/O Lines

̶ 28-pin PDIP, 32-lead TQFP, 28-pad QFN/MLF and 32-pad QFN/MLF

• Operating Voltage:

̶ 1.8 - 5.5V

• Temperature Range:

̶ -40°C to 85°C

• Speed Grade:

̶ 0 - 4MHz@1.8 - 5.5V, 0 - 10MHz@2.7 - 5.5.V, 0 - 20MHz @ 4.5 - 5.5V

• Power Consumption at 1MHz, 1.8V, 25°C

̶ Active Mode: 0.2mA

̶ Power-down Mode: 0.1µA

· Power-save Mode: 0.75µA (Including 32kHz RTC)

Microchip Technology ATMEGA328P-PU technical specifications, attributes, parameters and parts with similar specifications to Microchip Technology ATMEGA328P-PU.

The following figure shows the ATMEGA328P-PU Functional Block Diagram.

Functional Block Diagram

The  AVR  core has 32 general-purpose working registers and a large instruction set. The  Arithmetic Logic Unit  (ALU) is directly coupled to all 32 registers, allowing two independent registers to be accessed in a single instruction executed in one clock cycle. The resulting architecture is more code efficient than traditional  CISC  microcontrollers, with throughputs up to ten times faster.

• Commonly used in many projects and autonomous systems where a simple, low-powered, low-cost micro-controller is needed.

• The most common implementation is on the popular Arduino development platform, namely the Arduino Uno, Arduino Pro Mini and Arduino Nano models.

Microchip Technology Incorporated is a leading manufacturer of smart, networked, and secure embedded control solutions. Customers may create optimal designs using the company's simple development tools and broad product choices, which reduce risk while lowering overall system costs and time to market. The company's technologies are used by over 120,000 clients in the industrial, automotive, consumer, aerospace and defense, communications, and computing sectors.