ATSAMC21J18A-MUT64

Overview

The ATSAMC21J18A-MUT64 is an ARM microcontroller from the Microchip ATSAMC21 series, featuring an ARM Cortex-M0+ core. It integrates 256 kB of program memory and 32 kB of SRAM data RAM. The device supports a maximum clock frequency of 48 MHz and operates within a supply voltage range of 2.7 V to 5.5 V. It includes dual 12-bit ADCs with 20 channels and a 10-bit DAC. The component provides 52 I/O pins and interfaces such as I2C, LIN, PMBus, SPI, and USART. It is housed in a WLCSP-56 package, rated for industrial temperatures from -40°C to +85°C, and holds AEC-Q100 qualification.

Feature Summary

• Automotive-grade reliability certified under AEC-Q100 standards for robust performance in demanding environments.
• Integrated analog peripherals including dual 12-bit ADCs and a 10-bit DAC for precise signal processing.
• Supports multiple communication protocols including I2C, LIN, PMBus, SPI, and USART for versatile connectivity.

Applications

• Automotive electronic systems requiring AEC-Q100 compliance
• Industrial control applications utilizing LIN and PMBus interfaces
• General-purpose embedded controllers needing high pin count in compact packages

Procurement Notes

Verify the specific suffix against official Microchip documentation to confirm package type and temperature grade. Ensure compatibility with existing design constraints regarding the WLCSP-56 footprint and moisture sensitivity levels. Confirm that the ordering code matches the required electrical specifications and automotive qualification status before finalizing procurement.

Selection Notes

Select this component when a compact WLCSP package is required alongside high I/O density and automotive certification. It is suitable for designs needing dual 12-bit ADCs and support for automotive bus protocols like LIN and PMBus. Consider the 48 MHz operating speed and 256 kB flash capacity for complex firmware requirements within the specified voltage and temperature ranges.

Part Context

This part belongs to the ATSAMC21 family of 32-bit ARM Cortex-M0+ microcontrollers. The J18 variant specifically denotes the 256 kB flash and 32 kB RAM configuration. The MUT64 suffix indicates the WLCSP-56 packaging option. This family is designed for cost-sensitive and space-constrained applications requiring reliable performance and extensive peripheral integration.

Replacement Considerations

Cross-reference with other ATSAMC21 variants sharing the same memory size and core but differing in package or temperature rating. Verify pin-to-pin compatibility if substituting with QFN or TQFP versions. Ensure that any replacement maintains the required AEC-Q100 qualification and interface support for seamless integration.