AVR AVR® ATtiny, Functional Safety (FuSa) Microcontroller IC 8-Bit 20MHz 8KB (4K x 16) FLASH 20-QFN-EP (4x4)

The ATTINY85-20MU is a high-performance, low-power 8-bit AVR microcontroller from Microchip (formerly Atmel), designed for compact embedded systems that require efficient control, small footprint, and low energy consumption. It runs at up to 20 MHz and is based on the AVR RISC architecture, enabling most instructions to execute in a single clock cycle for fast and efficient processing.

This MCU is widely used in space-constrained applications such as IoT nodes, small automation systems, sensors, and consumer electronics due to its balance of performance, peripherals, and ultra-compact QFN package.

Key Features 8-bit AVR RISC CPU core Operating speed: up to 20 MHz Memory 8 KB In-System Programmable Flash 512 B SRAM 512 B EEPROM Low-power operation modes (Idle, ADC noise reduction, Power-down) 6 programmable I/O pins Peripherals 10-bit ADC (4 channels) 2 x 8-bit timers/counters PWM outputs Watchdog Timer (WDT) Analog comparator USI (Universal Serial Interface: SPI/I²C-like communication) Internal calibrated oscillator (no external crystal required in many designs) Brown-out detection (BOD) + Power-on reset (POR) DebugWIRE on-chip debugging support In-System Programming (ISP via SPI) Operating voltage: 2.7 V to 5.5 V Industrial temperature range: -40°C to +85°C Package: 20-pad QFN/MLF (20MU = QFN surface-mount package)

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