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ATTINY85-20SUR

MCHPATTINY85-20SUR

Microchip Technology
AVR AVR® ATtiny, Functional Safety (FuSa) Microcontroller IC 8-Bit 20MHz 8KB (4K x 16) FLASH 8-SOIC
NRND21,812 in stock

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

Industrial Safety Sensors
Utilizing FuSa features for monitoring critical thresholds in compact industrial environments.
Portable Consumer Electronics
Providing simple control logic for battery-powered devices with ultra-low power sleep modes.
Signal Conditioning
Using the internal 10-bit ADC and analog comparator to process sensor inputs before higher-level transmission.
Automotive Interior Lighting
Small-footprint control for LED dimming and simple user interface buttons.

Key Specifications

Speed 20MHz
RAM Size 512 x 8
Core Size 8-Bit
EEPROM Size 512 x 8
Peripherals Brown-out Detect/Reset, POR, PWM, WDT
Connectivity USI
Mounting Type Surface Mount
Number of I/O 6
Core Processor AVR
Package / Case 8-SOIC (0.209", 5.30mm Width)
Data Converters A/D 4x10b
Oscillator Type Internal
Program Memory Size 8KB (4K x 16)
Program Memory Type FLASH
Operating Temperature -40degC ~ 85degC (TA)
Supplier Device Package 8-SOIC
Voltage - Supply (Vcc/Vdd) 2.7V ~ 5.5V

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.

Part of ATtiny family » ATTINY85

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
Also available as: ATTINY85-20MU

Also Consider

ATTINY85-20PU MCHPMicrochip Technology - Through-hole DIP-8 version of the same MCU, ideal for breadboarding and prototyping.
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