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Microchip ATMEGA328PB-MU

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ATMEGA328PB-MU Overview

The high-performance Microchip'sATmega328PB is an 8-bit AVR® RISC-based microcontroller (MCU) with picoPower® technology. It combines 32kB ISP Flash memory with read-while-write capabilities, 1kB EEPROM, 2kB SRAM, 27 general purpose I/O lines, 32 general purpose working registers, five flexible timer/counters with compare modes, internal and external interrupts, two USARTs with wake-up on start of transmission, two byte-oriented 2-wire serial interfaces, two SPI serial ports, 8-channel 10-bit A/D converter, programmable watchdog timer with internal oscillator, a unique serial number and six software selectable power saving modes. The device operates between 1.8-5.5 volts.

The ATmega328PB is the first 8-bit AVR MCU to feature theQTouch® Peripheral Touch Controller (PTC), which acquires signals in order to detect touch on capacitive sensors, and supports both self- and mutual-capacitance sensors. The PTC is supported by the QTouch Composer development tool (QTouch Library project builder and QTouch Analyzer). It provides a faster and less complex capacitive touch implementation in any application.

The ATmega328PB supports 24 buttons in self-capacitance mode, or up to 144 buttons in mutual-capacitance mode. Mixing and matching mutual-and self-capacitance sensors is possible. Only one pin is required per electrode and no external components are required, delivering savings on the BOM cost compared to competing solutions.

By executing powerful instructions in a single clock cycle, the device achieves throughputs approaching 1 MIPS per MHz, balancing power consumption and processing speed.

Functional Safety:This product is recommended for safety critical applications targeting both industrial and automotive products(IEC 61508 and ISO 26262). Necessary documentation such as the FMEDA report can be provided on request. Please contact your local Microchip salesoffice or your distributor for more information.

ECAD Model

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ATMEGA328PB-MU

Features

    • 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
      • 32KBytes of In-System Self-Programmable Flash program memory
      • 1KBytes EEPROM
      • 2KBytes Internal SRAM
      • Write/Erase Cycles: 10,000 Flash/100,000 EEPROM
      • Data retention: 20 years at 85°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
    • Peripheral Features
      • Peripheral Touch Controller (PTC)
        • Capacitive Touch Buttons, Sliders and Wheels
        • 24 Self-Cap Channels and 144 Mutual Cap Channels
      • Two 8-bit Timer/Counters with Separate Prescaler and Compare Mode
      • Three 16-bit Timer/Counters with Separate Prescaler, Compare Mode, and Capture Mode
      • Real Time Counter with Separate Oscillator
      • Ten PWM Channels
      • 8-channel 10-bit ADC in TQFP and QFN/MLF package
      • Two Programmable Serial USARTs
      • Two Master/Slave SPI Serial Interfaces
      • Two Byte-Oriented 2-Wire Serial Interfaces (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 8 MHz Calibrated Oscillator
      • External and Internal Interrupt Sources
      • Six Sleep Modes: Idle, ADC Noise Reduction, Power-save, Power-down, Standby, and Extended Standby
      • Clock Failure Detection Mechanism and Switch to Internal 8 MHz RC Oscillator in case of Failure
      • Individual Serial Number to Represent a Unique ID
    • I/O and Packages
      • 27 Programmable I/O Lines
      • 32-pin TQFP and 32-pin QFN/MLF
    • Operating Voltage:
      • 1.8 - 5.5V
    • Temperature Range:
      • -40°C to 105°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: 0.24mA
      • Power-Down Mode: 0.2μA
      • Power-Save Mode: 1.3μA (Including 32kHz RTC)

Applications

AVR? ATmega

Product Parameter

  • Core Processor AVR

  • Speed 20MHz

  • Operating Temperature -40℃ ~ 85℃ (TA)

  • Program Memory Type FLASH

  • RAM Size 2K x 8

  • Number of I/O 27

  • Peripherals Brown-out Detect/Reset, POR, PWM, WDT

  • Mounting Type Surface Mount

  • Oscillator Type Internal

  • Supplier Device Package 32-VFQFN (5x5)

  • EEPROM Size 1K x 8

  • Package / Case 32-VFQFN Exposed Pad

  • Core Size 8-Bit

  • Connectivity I2C, SPI, UART/USART

  • Program Memory Size 32KB (16K x 16)

  • Data Converters A/D 8x10b

  • Voltage - Supply (Vcc/Vdd) 1.8V ~ 5.5V

Circuit Diagram

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