ATSAMC21J18A-MUT

ATSAMC21J18A-MUT is Microchip/Atmel’s SAM C21 family microcontroller. It’s a 32‑bit ARM Cortex‑M0+ MCU that runs up to about 48 MHz. The J18A‑MUT designation is a specific device/package variant in the C21 line; exact memory and pin count are defined in the datasheet for this variant (check the datasheet for the precise Flash/RAM sizes and package). Typical peripherals include USB Full‑Speed device support, multiple SERCOM modules (UART/USART, SPI, I2C), analog peripherals (ADC, with DAC on some variants), timers and PWM, RTC, watchdog, and an event system for peripheral-to-peripheral signaling. It supports several low‑power modes (sleep/standby) with flexible wakeup sources. Packages in the MUT family variant cover different pin counts and packaging options. Development is supported with Microchip Studio (Atmel Studio) or MPLAB X using the XC32 toolchain. For exact specs (memory, pins, package type, voltage ranges), consult the ATSAMC21J18A‑MUT datasheet and the SAM C21 Family Data Sheet/User Guide on Microchip’s website.

Key features of ATSAMC21J18A-MUT (SAM C21 family):
- CPU: Arm Cortex-M0+ core, up to 48 MHz
- Memory: up to 256 KB flash, up to 32 KB SRAM
- USB: Full-Speed USB device interface
- SERCOM: multiple SERCOM blocks for UART/USART, SPI, I2C
- ADC: 12-bit analog-to-digital converter with multiple channels
- DMA/Peripheral I/O: Direct Memory Access (DMAC) and Event System for peripheral-to-peripheral communication
- Power: 1.8V–3.6V operating range; several low-power sleep modes
- Safety/Reset: Brown-out detector (BOD) and POR reset
- Debug/Development: SWD/JTAG-compatible debug support
- Other: External clock support, typical package options around 48-pin variants
Note: exact memory, pin count, and peripheral counts may vary by specific package and revision.

- Pin count: 100 pins (100‑pin package, e.g., LQFP100).
- Function: 32‑bit ARM Cortex‑M0+ microcontroller (ATSAMC21J18A) from the SAM C21 family, intended for general embedded control with on‑chip memory and peripherals.

- Manufacturer: Microchip Technology Inc.
- Company type: American multinational semiconductor company that designs, manufactures, and sells microcontrollers, memory devices, and analog ICs, providing embedded control solutions worldwide (owns Atmel SAM product line).

ATSAMC21J18A-MUT is a low‑power 32‑bit MCU (ARM Cortex‑M0+). Common application areas:
- Industrial automation and sensing (data acquisition, small PLCs, motor interfaces)
- Building/home automation (thermostats, lighting, security controllers)
- IoT edge devices and gateways (sensor nodes, data loggers)
- Consumer electronics and portable devices (remote controls, wearables, accessories)
- Automotive body electronics and interior peripherals (lighting, climate controls)
- Energy management and smart meters
These use cases leverage its low power, cost efficiency, and integrated peripherals.

Package: 64‑pin LQFP (MUT suffix denotes the LQFP package).