Product Overview
The ATSAMC21E18A is a 32-bit ARM Cortex-M0+ based microcontroller from Microchip (Atmel) in the SAM C21 series. It features 256KB Flash, 32KB SRAM, full-speed USB device, CAN-FD, and rich analog peripherals including a 12-bit ADC and 10-bit DAC. The -MZT suffix indicates QFN-32 package. SL3V26 denotes a special/secure version with additional security features.
Key Specifications
| Core | ARM Cortex-M0+ |
| Clock | Up to 48 MHz |
| Flash | 256 KB |
| SRAM | 32 KB |
| Package | QFN-32 (MZT) |
| USB | Full-speed USB 2.0 Device |
| CAN | CAN-FD |
| ADC | 12-bit, 12 channels |
| DAC | 10-bit, 1 channel |
| Comparators | 2 analog comparators |
| SERCOM | 3-5 (UART/SPI/I2C) |
| Voltage | 1.62V ~ 3.63V |
| Temp Range | -40°C ~ +125°C |
Features
- ARM Cortex-M0+ core @ 48MHz
- 256KB Flash + 32KB SRAM
- Full-speed USB 2.0 device
- CAN-FD controller
- 12-bit ADC + 10-bit DAC
- Event System (peripheral-to-peripheral)
- SleepWalking interrupt wake-up
- QFN-32 package
- Secure variant (SL3V26)
- AEC-Q100 qualified (automotive variant available)
Applications
- Industrial automation
- Motor control
- Home automation
- Consumer electronics
- CAN bus nodes
- USB peripherals
- Sensor hubs
- Battery management