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Microchip ATSAMD21J18A-AU

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ATSAMD21J18A-AU Overview

A low-power, high-performance Microchip'sARM® Cortex®-M0+ based flash microcontroller, the ATSAMD21J18 is ideal for a wide range of home automation, consumer, metering, and industrial applications. It features:

  • 256KB of flash and 32KB of SRAM
  • Up to 48MHz operating frequency
  • Six serial communication modules (SERCOM) configurable as UART/USART, SPI or I2C, five 16-bit timer/counters, 32-bit Real-Time Clock and calendar, 24 PWM channels, one 20-channel 12-bit ADC, one 10-bit DAC
  • Full Speed USB Device and embedded Host
  • Support for up to 256 touch channels
  • 1.62V to 3.63V power supply
  • Easy pin migration to SAMD21G and SAMD21J devices
  • Supported by Atmel Studio, ASF and the SAM D21 Xplained Pro kit
Supported by MPLAB X IDE and MPLAB Harmony.

ECAD Model

Symbol

ATSAMD21J18A-AU

Footprint

ATSAMD21J18A-AU

Features

    Processor

    • ARM Cortex-M0+ CPU running at up to 48MHz
      • Single-cycle hardware multiplier
      • Micro Trace Buffer

    Memories

    • 256KB in-system self-programmable Flash
    • 32KB SRAM Memory

    System

    • Power-on reset (POR) and brown-out detection (BOD)
    • Internal and external clock options with 48MHDigital Frequency Locked Loop (DFLL48M) and 48MHto 96MHFractional
    • External Interrupt Controller (EIC)
    • 16 external interrupts
    • One non-maskable interrupt
    • Two-pin Serial Wire Debug (SWD) programming, test and debugging interface
    • Drop in compatible with SAM D20

    Low Power

    • Idle and standby sleep modes
    • SleepWalking peripherals

    Peripherals

    • 12-channel Direct Memory Access Controller (DMAC)
    • 12-channel Event System
    • Five 16-bit Timer/Counters (TC), configurable as either:
      • One 16-bit TC with compare/capture channels
      • One 8-bit TC with compare/capture channels
      • One 32-bit TC with compare/capture channels, by using two TCs
    • Three  24-bit Timer/Counters for Control (TCC), with extended functions:
      • Up to four compare channels with optional complementary output
      • Generation of synchronized pulse width modulation (PWM) pattern across port pins
      • Deterministic fault protection, fast decay and configurable dead-time between complementary output
      • Dithering that increase resolution with up to 5 bit and reduce quantization error
    • 32-bit Real Time Counter (RTC) with clock/calendar function
    • Watchdog Timer (WDT)
    • CRC-32 generator
    • One full-speed (12Mbps) Universal Serial Bus (USB) 2.0 interface
      • Embedded device function
      • Eight endpoints
    • Six Serial Communication Interfaces (SERCOM), each configurable to operate as either:
      • USART with full-duplex and single-wire half-duplex configuration
      • I2C Bus up to 3.4MHz
      • SMBUS/PMBUS
      • SPI
      • LIN slave
    • 12-bit, 350ksps Analog-to-Digital Converter (ADC) with up to 20 channels
      • Differential and single-ended input
      • 1/2x to 16x programmable gain stage
      • Automatic offset and gain error compensation
      • Oversampling and decimation in hardware to support 13-, 14-, 15- or 16-bit resolution
    • 10-bit, 350ksps Digital-to-Analog Converter (DAC)
    • Two Analog Comparators (AC) with window compare function
    • Peripheral Touch Controller (PTC)
      • 256-channel capacitive touch and proximity sensing

    I/O

    • 52 GPIO pins

    Packages

    • 64-pin TQFP, QFN, UFBGA

    Operating Voltage

    • 1.62V – 3.63V

Applications

SAM D21J

Product Parameter

  • Core Processor ARM Cortex M0+

  • Speed 48MHz

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

  • Program Memory Type FLASH

  • RAM Size 32K x 8

  • Number of I/O 52

  • Peripherals Brown-out Detect/Reset, DMA, I2S, POR, PWM, WDT

  • Mounting Type Surface Mount

  • Oscillator Type Internal

  • Supplier Device Package 64-TQFP (10x10)

  • Package / Case 64-TQFP Exposed Pad

  • Core Size 32-Bit

  • Connectivity I2C, LINbus, SPI, UART/USART, USB

  • Program Memory Size 256KB (256K x 8)

  • Data Converters A/D 20x12b; D/A 1x10b

  • Voltage - Supply (Vcc/Vdd) 1.62V ~ 3.6V

Circuit Diagram

ATSAMD21J18A-AU Related Keywords

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  • ATSAMD21J18A-AU Picture
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  • ATSAMD21J18A-AU Pin voltage

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