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ATtiny85 8-Bit tinyAVR Microcontrollers

The Atmel ATtiny85 Microcontroller is an 8-bit device based on the AVR enhanced RISC architecture. Being an Atmel tinyAVR device the ATtiny85 is packs performance and power efficiency into a small package, perfect for applications where space is at a premium. By executing powerful instructions in a single clock cycle the ATtiny85 achieves throughputs approaching 1 MIPS per MHz, balancing power consumption and speed.

Microcontroller Features

20 MHz Max. Operating Frequency
8 KB Flash
512 Bytes EEPROM
120 Instructions – Most single clock cycle execution
32 General Purpose Registers
debugWIRE On-chip Debug System
In-System Programmable via SPI Port
External and Internal Interrupt Sources
Low Power Idle, ADC Noise Reduction, and Power-down Modes
Enhanced Power-on Reset Circuit
Programmable Brown-out Detection Circuit
Internal Calibrated Oscillator

Peripheral Features

8-bit Timer/Counter with Prescaler and Two PWM Channels
8-bit High-Speed Timer/Counter with Separate Prescaler
Universal Serial Interface (USI) with Start Condition Detector
10-bit Analogue-to-Digital Converter – 4 Channels
Programmable Watchdog Timer with Separate On-chip Oscillator
On-chip Analogue Comparator


Attribute Value
Family Name ATtiny85
Package Type PDIP
Mounting Type Through Hole
Pin Count 8
Device Core AVR
Data Bus Width 8bit
Program Memory Size 8 kB
Maximum Frequency 20MHz
RAM Size 512 B
USB Channels 0
Number of PWM Units 1
Number of SPI Channels 1
Number of CAN Channels 0
Number of USART Channels 0
Typical Operating Supply Voltage 2.7 → 5.5 V
Number of I2C Channels 1
Number of UART Channels 0
Minimum Operating Temperature -40 °C
Number of ADC Units 1
ADCs 4 x 10 bit
Program Memory Type Flash
Height 4.826mm
Number of LIN Channels 0
Width 7.112mm
Pulse Width Modulation 1 (6 Channel)
Dimensions 10.16 x 7.112 x 4.826mm
Length 10.16mm
Instruction Set Architecture RISC
Maximum Operating Temperature +85 °C
Number of PCI Channels 0
Maximum Number of Ethernet Channels 0
Number of Ethernet Channels 0


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Available on backorder