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ATTINY85-20SU

MCHPATTINY85-20SU

Microchip Technology
SOIC-package ATtiny85 for surface-mount or breakout-based prototyping.
NRND11,236 in stock
Datasheet Digi-Key Mouser Compare Prices

Overview

The ATTINY85-20SU is a high-performance, low-power 8-bit AVR RISC-based microcontroller in a compact 8-pin SOIC package. It features 8 KB of ISP flash memory, 512 bytes of EEPROM, and 256 bytes of SRAM, making it an industry standard for small-scale embedded control where space is at a premium.

Why Choose This Part

The ATTINY85-20SU offers a versatile 20 MHz clock speed and wide voltage compatibility, making it highly adaptable for various power environments. Its internal EEPROM and self-programmable flash allow for robust data logging and field updates in an extremely small 8-pin footprint.

Applications

Portable Consumer Electronics
Ideal for battery-operated devices due to its ultra-low power consumption of 0.1 uA in power-down mode.
Sensor Interface Nodes
Acts as a local controller for reading analog sensors and transmitting data over I2C or SPI to a master controller.
PWM Lighting Control
Utilizes its high-speed timer/counter with two PWM channels to drive LEDs or small DC motors.
Legacy System Logic
Replaces complex discrete logic or simple CPLDs in space-constrained designs needing basic decision-making logic.

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

Develop using the Microchip Studio IDE or the Arduino IDE with the ATTinyCore library for rapid prototyping. For programming, use an AVR ISP MKII, USBtinyISP, or an Arduino as ISP to flash firmware via the ICSP pins.

Part of ATtiny family » ATTINY85

ATTINY85 Family

Comparing specs that differ across variants. The current part is highlighted.

Part Number Package Stock
ATTINY85-20SU (this part) SOIC-8 11,236
ATTINY85-20SUR SOIC-8 21,812
ATTINY85-20PU DIP-8 6,974
Also available as: ATTINY85-20MU

Also Consider

ATTINY85-20PU MCHPMicrochip Technology - The through-hole PDIP-8 version of the same chip, preferred for breadboard prototyping and socketed applications.
ATSAMD11D14A MCHPMicrochip Technology - A 32-bit ARM Cortex-M0+ alternative for projects requiring native USB support and higher computational throughput.

Categories

Microcontrollers > AVR
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