MCHPATTINY85-20SUR
Overview
The ATTINY85-20SUR is a high-performance, low-power 8-bit AVR RISC-based microcontroller featuring 8KB of ISP flash memory and 512 bytes of EEPROM. This Functional Safety (FuSa) rated IC provides robust operation in a compact 8-SOIC package, making it ideal for space-constrained applications requiring reliable execution. It operates at speeds up to 20MHz and includes an on-chip analog comparator and a programmable watchdog timer.
Why Choose This Part
The primary advantage is the high performance-to-size ratio, offering 8KB of flash in an 8-pin package. It features a very low power-down current of 0.1 uA and supports debugWIRE for simplified on-chip debugging without sacrificing I/O pins.
Applications
Key Specifications
Getting Started
Engineers can develop for this part using Microchip Studio or the AVR-GCC toolchain. Hardware debugging is supported through the debugWIRE interface using an Atmel-ICE or similar programmer. For rapid prototyping, the part is widely supported within the Arduino IDE using the ATTinyCore board manager.
ATTINY85 Family
Comparing specs that differ across variants. The current part is highlighted.
| Part Number | Package | Stock |
|---|---|---|
| ATTINY85-20SUR (this part) | SOIC-8 | 21,812 |
| ATTINY85-20SU | SOIC-8 | 11,236 |
| ATTINY85-20PU | DIP-8 | 6,974 |



