ATSAMD21J16A-CUT

Overview

The ATSAMD21J16A-CUT is an ARM-based microcontroller from the SAM D21 series, featuring a Cortex-M0+ core. It integrates 64 kB of Flash memory and 8 kB of SRAM. The device operates within a voltage range of 1.62 V to 3.63 V and supports a maximum clock frequency of 48 MHz. It provides 52 general-purpose I/O pins and includes a 12-bit ADC with 20 channels. The component is housed in a TQFP-64 package and is qualified under AEC-Q100 standards for automotive applications.

Feature Summary

• Integrates a 32-bit ARM Cortex-M0+ processor core for efficient code execution.
• Includes advanced analog peripherals such as a 12-bit ADC and a 10-bit DAC.
• Supports multiple communication interfaces including SPI, I2C, USART, and USB.
• Features low-power operation modes suitable for battery-constrained designs.

Applications

• Industrial control systems requiring functional safety compliance
• Automotive electronics utilizing AEC-Q100 qualified components
• Consumer devices needing low-power wireless connectivity via USB
• Smart sensors and actuators with analog signal processing needs

Procurement Notes

Verify the specific suffix 'CUT' indicates tape-and-reel packaging rather than tray distribution. Confirm current availability status as some SAM D21 variants may be subject to lifecycle changes. Ensure compatibility with existing PCB footprints for the TQFP-64 package. Check for any recent product change notifications regarding pinout or electrical characteristics updates.

Selection Notes

Select this model when 64 kB of program memory and 8 kB of RAM are sufficient for the application logic. Choose the TQFP-64 package if through-hole or standard surface-mount assembly equipment is available. Opt for this variant over higher-memory models to reduce cost where storage capacity is not a limiting factor. Consider the AEC-Q100 qualification if the target environment requires automotive-grade reliability.

Part Context

This component belongs to the Microchip SAM D21 family, which is designed for high-performance, low-power applications. The SAM D21 series is widely used in embedded systems due to its balance of processing power and energy efficiency. The 'J' designation typically indicates a specific pin count and peripheral set within the family, distinguishing it from other variants like the G or E series.

Replacement Considerations

ATSAMD21J16A-AU: Identical electrical specifications but packaged in trays instead of tape-and-reel. ATSAMD21J17A-AU: Offers increased memory (128 kB Flash, 16 kB SRAM) in the same package. ATSAMD21G16B-AFT: Similar performance but in a smaller 48-TQFP package with fewer I/O pins.