ATSAMC21N18A-ANT

Overview

The ATSAMC21N18A-ANT is an ARM microcontroller from the Microchip ATSAMC21 series, featuring an ARM Cortex-M0+ core. It provides 256 kB of Flash program memory and 32 kB of SRAM data RAM within a TQFP-48 package. The device supports a maximum clock frequency of 48 MHz and operates with a supply voltage range of 2.7 V to 5.5 V. It includes two 12-bit ADCs with 14 channels, a 10-bit DAC, and five timer/counters. Communication interfaces include I2C, LIN, PMBus, Serial, SPI, and USART. The component is qualified under AEC-Q100 standards and functions within a temperature range of -40°C to +105°C.

Feature Summary

• Features an ARM Cortex-M0+ processor core optimized for low-power industrial applications.
• Includes robust communication peripherals such as SERCOM modules supporting multiple protocols.
• Provides advanced motor control capabilities and Peripheral Touch Control (PTC) for user interfaces.
• Designed for operation in noisy environments with high noise immunity characteristics.

Applications

• Industrial automation controllers
• Motor control systems
• Commercial instrumentation
• Noisy environment embedded systems

Procurement Notes

Verify the specific suffix 'ANT' corresponds to the TQFP-48 package and the +105°C extended temperature grade when ordering. Confirm that the AEC-Q100 qualification aligns with automotive or industrial reliability requirements. Ensure the 5V operating voltage matches the system power design. Check for moisture sensitivity level handling during assembly. Validate pinout compatibility with existing PCB layouts before finalizing procurement.

Selection Notes

Select this model for designs requiring 5V tolerance and extended temperature ranges up to 105°C. The 256 kB Flash and 32 kB RAM support complex firmware logic. The inclusion of PTC allows for touch interface development without external components. Compare against other ATSAMC21 variants if lower pin counts or different memory sizes are sufficient. Ensure the TQFP-48 package fits the mechanical constraints of the target enclosure.

Part Context

This component belongs to the Microchip ATSAMC21 family of 5V ARM Cortex-M0+ microcontrollers. The series is engineered for industrial and commercial applications demanding robustness in electrically noisy environments. Key family features include CAN FD, SERCOM, and advanced analog peripherals. The ATSAMC21N18A variant specifically offers higher memory capacity compared to entry-level models in the same package.

Replacement Considerations

Cross-reference with other ATSAMC21N18A variants differing only in package type (e.g., QFN or WLCSP) if form factor changes are acceptable. Verify functional equivalence with ATSAMC21G18A or ATSAMC21J18A if pin count and memory specifications match the application requirements.