ATSAMD21J17A-AF

Overview

The ATSAMD21J17A-AF is a 32-bit microcontroller based on the ARM Cortex-M0+ core, operating at a maximum frequency of 48MHz. It features 128KB of in-system programmable Flash memory and 16KB of SRAM. The device supports a supply voltage range of 1.62V to 3.63V and includes an internal oscillator. Connectivity options include I2C, LINbus, SPI, USART, and USB interfaces. It provides 52 general-purpose I/Os and integrates peripherals such as DMA, I2S, PWM, and watchdog timers.

Feature Summary

• Integrates a high-performance ARM Cortex-M0+ processor with single-cycle multiplication and hardware division capabilities.
• Includes comprehensive analog peripherals featuring multiple 12-bit ADC channels and a 10-bit DAC for signal processing.
• Supports flexible communication protocols including USB Device/Host/OTG and standard serial interfaces like SPI and UART.
• Features low-power operation modes with fast wake-up times suitable for battery-powered applications.

Applications

• Industrial control systems requiring robust peripheral integration
• Consumer electronics utilizing USB connectivity
• Medical devices needing precise analog-to-digital conversion
• Smart home automation controllers

Procurement Notes

Verify the specific suffix 'AF' corresponds to the TQFP-48 package and industrial temperature range during sourcing. Confirm RoHS compliance status through official Microchip documentation or authorized distributor certificates prior to procurement. Ensure ESD handling procedures are followed due to surface-mount packaging sensitivity.

Selection Notes

Select this model when a balance of moderate Flash capacity and extensive I/O count is required within a compact footprint. Compare against the ATSAMD21J17A-AU if a larger QFP package is preferred for easier prototyping. Consider the ATSAMD21J17D series if automotive qualification (AEC-Q100) and extended temperature ranges are mandatory for the application environment.

Part Context

This component belongs to the SAM D21 family of microcontrollers designed for cost-sensitive, high-performance applications. The J17 variant specifically offers 128KB of Flash memory, distinguishing it from lower-capacity models like the J15 or higher-capacity J18. The 'A' suffix typically denotes the commercial temperature grade, while 'AF' specifies the TQFP-48 package type.

FAQ

What is the maximum operating frequency of the ATSAMD21J17A-AF?

The microcontroller operates at a maximum clock frequency of 48 MHz.

Does the ATSAMD21J17A-AF support USB communication?

Yes, it includes a full-speed USB interface supporting Device, Host, and OTG modes.