ATTINY85-20SU Microcontroller: Circuit, Pinout, and Datasheet

The ATTINY85-20SU is a high-performance, low-power 8-bit AVR RISC -based Microcontroller that includes 512B EEPROM, 6 general-purpose I/O lines, 32 general-purpose working registers, one 8-bit timer/counter with compare modes, one 8-bit high-speed timer/counter,  USI , internal and external  Interrupts , 4-channel 10-bit A/D converter, programmable watchdog timer with internal oscillator, three The device runs between 2.7 and 5.5V and has a throughput of 20 MIPS @ 20 MHz. The device achieves throughputs approaching 1 MIPS per MHz by executing strong instructions in a single clock cycle, balancing power consumption and processing performance.

The following shows the ATTINY85-20SU Pinout.

Pinout

The following figures are ATTINY85-20SU Symbol, Footprint and 3D Model.

Symbol

Footprint

3D Model

• High Performance, Low Power AVR®  8-Bit  Microcontroller

• Advanced RISC Architecture

– 120 Powerful Instructions – Most Single Clock Cycle Execution

– 32 x 8 General Purpose Working Registers

– Fully Static Operation

• Non-volatile Program and Data Memories

– 2/4/8K Bytes of In-System Programmable Program Memory Flash

Endurance: 10,000 Write/Erase Cycles

– 128/256/512 Bytes In-System Programmable  EEPROM 

    Endurance: 100,000 Write/Erase Cycles

– 128/256/512 Bytes Internal SRAM

– Programming Lock for Self-Programming Flash Program and EEPROM Data Security

• Peripheral Features

– 8-bit Timer/Counter with  Prescaler  and Two PWM Channels

– 8-bit High Speed Timer/Counter with Separate Prescaler

   2 High Frequency PWM Outputs with Separate Output Compare Registers

   Programmable Dead Time Generator

– USI - Universal Serial Interface with Start Condition Detector

– 10-bit ADC

   4 Single Ended Channels

   2 Differential ADC Channel Pairs with  Programmable Gain  (1x, 20x)

   Temperature Measurement

– Programmable Watchdog Timer with Separate On-chip Oscillator

– On-chip Analog Comparator

• Special Microcontroller Features

– 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

• I/O and Packages

– Six Programmable I/O Lines

– 8-pin  PDIP , 8-pin SOIC, 20-pad  QFN /MLF, and 8-pin TSSOP (only ATtiny45/V)

• Operating Voltage

– 1.8 - 5.5V for ATtiny25V/45V/85V

– 2.7 - 5.5V for ATtiny25/45/85

• Speed Grade

– ATtiny25V/45V/85V: 0 – 4 MHz @ 1.8 - 5.5V, 0 - 10 MHz @ 2.7 - 5.5V

– ATtiny25/45/85: 0 – 10 MHz @ 2.7 - 5.5V, 0 - 20 MHz @ 4.5 - 5.5V

• Industrial Temperature Range

• Low Power Consumption

– Active Mode:

   1 MHz, 1.8V: 300 µA

– Power-down Mode:

   0.1 µA at 1.8V

Microchip Technology ATTINY85-20SU technical specifications, attributes, parameters and parts with similar specifications to Microchip Technology ATTINY85-20SU.

The following figure shows the ATTINY85-20SU Functional Block Diagram.

Functional Block Diagram

The circuit for connecting the ATTiny85 as a slave I2C device is shown above. The utilization of 10K pull ups is noteworthy.

Circuit

• Building Automation

• Communications & Networking

• Consumer Electronics

• Motor Drive & Control

• Industrial

• Sensing & Instrumentation

The following figure is the ATTINY85-20SU Package.

Package

Microchip Technology Inc. is a leading provider of microcontroller and analog semiconductors, delivering low-risk product development, reduced overall system cost, and faster time to market to thousands of customers across the world. Microchip, based in Chandler, Arizona, provides excellent technical support as well as consistent delivery and quality.