ATAVRFEB-SAFETY Microchip

AVR Functional Safety - Hardware User s Guide Introduction This document is the hardware user s guide of AVR Functional Safety board based on ATtiny3217 microcontroller (MCU). It gives details about the overall board design and the hardware function blocks. The AVR Functional Safety board is designed to easily demonstrate and evaluate the safety and reliability peripherals on ATtiny3217 MCU and firmware based safety features, such as: Watchdog Timer (WDT) Cyclic Redundancy Check (CRC) Brown-out Detection (BOD) Voltage Level Monitoring (VLM) Power-on Reset (POR) Timer/Counter Type D (TCD) Fault Detection Class B Self Tests User Guide DS40002013A-page 1 2018 Microchip Technology Inc. Features Core Independent Operation Using Configurable Custom Logic (CCL) and 16-bit Timer/Counter Type A to Create a Heartbeat Signal Core Independent Cyclic Redundancy Check Memory Scan (CRCSCAN) Core Independent Operation Using 12-bit Timer/Counter Type D (TCD) to Drive a Fan Motor Core Independent TCD Fault Handling Using Event System (EVSYS), Analog Comparator (AC) and Digital-to-Analog Converter (DAC) Using Charlieplexing Technique to Drive a Large Number of LEDs with a Low Number of Pins, Using 16-bit Timer/Counter Type B (TCB) and Priority Interrupt Demonstrating Core Independent Watchdog Timer (WDT) in Window mode Demonstrating Real-Time Counter Periodic Interrupt (RTC) (PIT) Board Controller with (PTC) Touch Slider to Adjust the Voltage to ATtiny3217, Demonstrating Voltage Level Monitor (VLM) Interrupt, Brown-out Detector (BOD) and Power-on Reset (POR) On-board Mini Embedded Debugger (mEDBG) for Programming and Debugging. DS40002013A-page 2 User Guide 2018 Microchip Technology Inc.