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ATSAMC21J18A
  • ATSAMC21J18A
  • ATSAMC21J18A
  • ATSAMC21J18A
  • ATSAMC21J18A
  • ATSAMC21J18A

ATSAMC21J18A

In Production

The Microchip SAM C series of 5V Cortex M0+ devices is designed for industrial and commercial applications in noisy environments. These products feature robust communications peripherals including the SERCOM module and CAN FD, along with advanced motor control peripherals, and the Peripheral Touch Control (PTC) for developing robust user interfaces. Available as a 64Mhz DeviceSupported by MPLAB X IDE and MPLAB Harmony.Functional SafetyThis device supports the ISO 26262 (ASIL B), IEC 61508 (SIL 2/3) and IEC 60730 (Class B) functional safety standards.  • The Functional Safety Manual, FMEDA and information on the Diagnostic Software are available under NDA through the request form on the 32-bit Microcontrollers Functional Safety web page.·   ...

Microchip Technology ATSAMC21J18A Product Info

16 April 2026 1

Parameters

CPU

Cortex-M0+

I2C

6

CPU Speed Max MHz (megahertz)

64

Operation Voltage Max.(V)

5.5

Operation Voltage Min.(V)

2.7

Internal Oscillator

32khz, 32Khz ULP, 48Mhz

Part Family

SAMC21

QSPI

0

U(S)ART

6

Program Memory Size (KB)

256

Pincount

64

Crypto Engine

No

TempRange Min

-40

TempRange Max

125

Features

  • ARM Cortex-M0+ CPU running at up to 64MHz
  • Single-cycle hardware multiplier
  • Micro Trace Buffer
  • Memory Protection Unit (MPU)
  • 256KB in-system self-programmable Flash
  • 8KB independent self-programmable Flash for EEPROM emulation
  • 32KB SRAM Main Memory
  • Power-on reset (POR) and brown-out detection (BOD)
  • Internal and external clock options with 48MHz to 96MHz
  • Fractional Digital Phase Locked Loop (FDPLL96M)
  • 16 external interrupts
  • One non-maskable interrupt
  • Two-pin Serial Wire Debug (SWD) programming, test and debugging interface
  • Idle, standby, and off sleep modes
  • SleepWalking peripherals
  • Hardware Divide and Square Root Accelerator (DIVAS)
  • 12-channel Direct Memory Access Controller (DMAC)
  • 12-channel Event System
  • Up to eight 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
  • 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 outputs
  • Dithering that increase resolution with up to 5 bit and reduce quantization error
  • Frequency Meter
  • 32-bit Real Time Counter (RTC) with clock/calendar function
  • Watchdog Timer (WDT)
  • CRC-32 generator
  • CAN 2.0A/B
  • ISO CAN FD; ISO 1189801:2015
  • Each CAN interface have two selectable pin locations to switch between two external CAN transceivers (without the need for an external switch)
  • USART with full-duplex and single-wire half-duplex configuration
  • I2C up to 3.4MHz (Except SERCOM6 and SERCOM7)
  • SPI
  • LIN master/slave
  • RS-485
  • PMBus
  • Four Configurable Custom Logic (CCL)
  • Differential and single-ended input
  • Automatic offset and gain error compensation
  • Oversampling and decimation in hardware to support 13-, 14-, 15- or 16-bit resolution
  • One 16-bit Sigma-Delta Analog-to-Digital Converter (SDADC) with up to 3 differential channels
  • 10-bit, 350ksps Digital-to-Analog Converter (DAC)
  • Four Analog Comparators (AC) with window compare function
  • Integrated Temperature Sensor
  • Peripheral Touch Controller (PTC)
  • 256-Channel capacitive touch and proximity sensing I/O
  • Up to 52 programmable I/O pins
  • Drop in compatible with select SAM D20 and SAM D21
  • 2.7V – 5.5V

    • Description

    The Microchip SAM C series of 5V Cortex M0+ devices is designed for industrial and commercial applications in noisy environments. These products feature robust communications peripherals including the SERCOM module and CAN FD, along with advanced motor control peripherals, and the Peripheral Touch Control (PTC) for developing robust user interfaces. 

    Available as a 64Mhz Device

    Supported by MPLAB X IDE and MPLAB Harmony.

    Functional Safety

    This device supports the ISO 26262 (ASIL B), IEC 61508 (SIL 2/3) and IEC 60730 (Class B) functional safety standards.  

    • The Functional Safety Manual, FMEDA and information on the Diagnostic Software are available under NDA through the request form on the 32-bit Microcontrollers Functional Safety web page.

    ·   To request any information about the SIL 2/3 STL, please fill out and submit the request form on Industrial Safety Self-Test Library web page.

    ·  Learn more about  32-bit MCUs with Functional Safety capabilities including device hardware and certified software libraries. 

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