ATSAMD21J15B-AU

Overview

The ATSAMD21J15B-AU is a 32-bit microcontroller based on the ARM Cortex-M0+ core, belonging to the SAM D21J Functional Safety (FuSa) series. It features 32KB of Flash memory and 4KB of SRAM. The device operates at a maximum clock speed of 48MHz with a supply voltage range of 1.62V to 3.6V. It includes 20 channels of 12-bit ADC and one 10-bit DAC. Connectivity options include I2C, LINbus, SPI, USART, USB, and I2S. The unit is housed in a 64-TQFP package and supports an operating temperature range of -40°C to +85°C.

Feature Summary

• Integrated Functional Safety (FuSa) capabilities for safety-critical applications
• High-performance 48MHz ARM Cortex-M0+ processor core
• Comprehensive analog peripherals including multiple 12-bit ADCs and a 10-bit DAC
• Versatile communication interfaces supporting USB, SPI, I2C, USART, LINbus, and I2S

Applications

• Industrial control systems requiring functional safety compliance
• Medical devices needing reliable embedded processing
• Automotive subsystems utilizing LINbus or CAN-like protocols
• Consumer electronics with USB connectivity requirements

Procurement Notes

Verify the specific suffix 'AU' corresponds to the 64-TQFP package and commercial temperature grade during procurement. Confirm RoHS and REACH compliance status with the manufacturer or authorized distributor. Ensure the source document explicitly lists this part number as active or recommended for new designs. Check for any recent Product Change Notifications (PCNs) regarding assembly sites or material changes that may affect integration.

Selection Notes

Select this component when functional safety certification is required alongside standard ARM Cortex-M0+ performance. Compare pin counts and peripheral sets against other SAM D21 variants like the G or E series if package size constraints exist. Evaluate power consumption profiles against application requirements within the specified voltage range. Consider the availability of development tools and software support libraries for the FuSa-enabled features.

Part Context

This microcontroller is part of Microchip's SAM D21 family, designed for applications demanding both high performance and functional safety integrity. It shares architectural similarities with other SAM D21 models but distinguishes itself through its specific memory configuration and safety-focused feature set. The J-series designation typically indicates a specific pin count and peripheral mix within the broader portfolio.

Replacement Considerations

ATSAMD21J15A-AU: Pin-compatible alternative with potentially different safety qualification levels.

FAQ

What is the maximum operating frequency of the ATSAMD21J15B-AU?

The maximum operating frequency is 48 MHz.

Does this microcontroller support functional safety standards?

Yes, it belongs to the Functional Safety (FuSa) series of the SAM D21 family.

How many analog-to-digital converter channels are available?

The device provides 20 channels of 12-bit ADC.