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Microchip

ATMEGA324PB-AN

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ATMEGA324PB-AN Overview

The high-performance Microchip picoPower 8-bit AVR RISC-basedmicrocontroller combines 32kB ISP flash memory with read-while-writecapabilities, 1kB EEPROM, 2kB SRAM, 39 general purpose I/O lines, 32general purpose working registers, five flexible timer/counters withcompare modes, internal and external interrupts, three USARTs withwake-up on start of transmission, two byte-oriented 2-wire serialinterface, two SPI serial ports, one 8-channel 10-bit ADC with optionaldifferential input stage with programmable gain, programmable watchdogtimer with internal oscillator, a JTAG (IEEE 1149.1 compliant) testinterface for on-chip debugging and programming, and six softwareselectable power saving modes. The device operates between 1.8-5.5volts.

The ATmega324PB features the successful QTouch PeripheralTouch Controller (PTC). The PTC acquires signals in order to detecttouch on capacitive sensors, and supports both self- andmutual-capacitance sensors. The ATmega324PB PTC is supported by theMicrochip QTouch Composer development tool (QTouch Library projectbuilder and QTouch Analyzer). It provides a faster and less complexcapacitive touch implementation in any application.

It supports 32buttons in self-capacitance mode, or up to 256 buttons inmutual-capacitance mode. Mix-and-match mutual-and self-capacitancesensors is possible, and only one pin is required per electrode ??? noexternal components are required, giving savings on the BOM costcompared to competing solutions.

By executing powerfulinstructions in a single clock cycle, the device achieves throughputsapproaching 1 MIPS per MHz, balancing power consumption and processingspeed.

ECAD Model

Footprint

ATMEGA324PB-AN

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
      • ThreeProgrammable 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

Specifications

  • Core Processor AVR

  • Speed 20MHz

  • Operating Temperature -40℃ ~ 105℃ (TA)

  • Program Memory Type FLASH

  • RAM Size 2K x 8

  • Number of I/O 39

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

  • Mounting Type Surface Mount

  • Oscillator Type Internal

  • Supplier Device Package 44-TQFP (10x10)

  • EEPROM Size 1K x 8

  • Package / Case 44-TQFP

  • 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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