Microchip Technology

ATMEGA328P-MU

Microcontrollers

MPN
ATMEGA328P-MU
Product Type
Core Processor
AVR
Maximum Clock Speed
20 MHz
Package / Case
VQFN-32
Key Attributes
Low-power CMOS 8-bit microcontroller

Technical Specifications

TypeDescription
Core ProcessorAVR
Core Bits8
Maximum Clock Speed20 MHz
Flash Memory32 KB
Number of I/O23
Flash TypeFLASH
TypeDescription
Adc Bits10.0
Oscillator TypeBuilt-in
Eeprom Bytes1 KB
Operating Temp-40°C ~ +85°C
Working Voltage V3.65 V
Package / CaseVQFN-32

Product Introduction

The ATmega48A/PA/88A/PA/168A/PA/328/P is a low power, CMOS 8-bit microcontrollers based on the AVR enhanced RISC architecture. By executing instructions in a single clock cycle, the devices achieve CPU throughput approaching one million instructions per second (MIPS) per megahertz, allowing the system designer to optimize power consumption versus processing speed.

Features

  • High Performance, Low Power AVR 8-Bit Microcontroller Family
  • Advanced RISC Architecture
  • 131 Powerful Instructions - Most Single Clock Cycle Execution
  • 32×8 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
  • 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
  • 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 VQFN package
  • Temperature Measurement
  • 6-channel 10-bit ADC in SPDIP 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
  • 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
  • 23 Programmable I/O Lines
  • 28-pin SPDIP, 32-lead TQFP, 28-pad VQFN and 32-pad VQFN
  • 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 - 5.5V, 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)

Datasheet

📄 Open Download

Alternative Parts

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Compliance & Export Codes

TypeDetails
RoHSROHS3
ECCNEAR99
TypeDetails
CNHTS8542319090

Sourcing Information

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