Chinese document "Getting Started with Core Independent Peripherals on AVR® Microcontrollers"

Core Independent Peripherals (CIPs) are a class of peripherals found on many AVR® devices. This application note will focus on the tinyAVR® 1 series, but the general principles apply to all devices featuring CIPs, with some differences in peripheral features and design.

CIP is designed to handle the corresponding task through one or more peripherals, without code or CPU supervision to maintain normal operation. This has many benefits, such as providing short and predictable response time between peripherals, reducing software complexity, shortening software execution time and reducing power consumption.

There are a large number of CIPs on tinyAVR® 1 series devices. For example: Event System (EVSYS), Configurable Custom Logic (CCL), Timer/Counter A and B (TCA/TCB), Real-Time Timer Counter (RTC), Analog-to-Digital Converter (ADC), and CRCSCAN.

This application note will first introduce the two most powerful modules in core-independent applications: CCL and Event System. Then, an application example will be used to show how to use CCL, Event System, RTC and ADC together to filter button signals and start ADC conversion core independently. This is helpful for users who want to build custom projects using CIP.

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