AN2522

Introduction
Features
1 Relevant Devices
2 Device Specific Implementation Details
Some details are specific for the device or device group the accompanying code was written for, thus they may or may not be applicable for other devices. The details described below apply to, but are not necessarily limited to, tinyAVR® 1-series.
3 Theory of Operation
4 CCL BLDC Fan Controller Implementation
5 CCL BLDC Fan Hardware Suggestions
The accompanying code includes support for adjusting the PWM duty cycle with the on-board button of the ATtiny817 Xplained Mini. Other than this, there is no specific hardware provided or described for this application note. For this reason, and the fact that BLDC motors and their control circuits come in many different varieties, two specific fan hardware layouts that will fit the described device setup are outlined below.
6 CCL BLDC Fan Further Development
7 Get Source Code from Atmel | START
8 Terms and Abbreviations
9 Revision History
The Microchip Web Site
Customer Change Notification Service
Customer Support
Microchip Devices Code Protection Feature
Legal Notice
Trademarks
Quality Management System Certified by DNV
Worldwide Sales and Service

9 Revision History


Doc. Rev.	Date	Comments
C	10/2018	Updated figures 1-1, 1-2, 1-3 in chapter "Relevant Devices" Minor editorial updates
B	02/2018	Chapter "Relevant Devices" has been updated to include tinyAVR® 0-series and megaAVR® 0-series
A	08/2017	Converted to Microchip format and replaced the Atmel document number 42778 Added "Relevant Devices" and "Get Source Code from Atmel \| START" Changed tiny817 references to tinyAVR® 1-series where relevant Added direct example project link to Start in Publication variables
42778B	11/2016	Minor correction in chapter "Device Specific Implementation Details"
42778A	10/2016	Initial document release

The online versions of the documents are provided as a courtesy. Verify all content and data in the device’s PDF documentation found on the device product page.