Tags: , ATMEL, ATTINY85-20PU, Microcontrollers

Microcontrollers ATMEL ATTINY85 20PU

  • 15.00 AED
    • Ex Tax:15.00 AED
    • Product Code: ATTINY85-20PU
    • Availability: In Stock
    The high-performance, low-power Atmel 8-bit AVR RISC-based microcontroller combines 8KB ISP flash memory, 512B EEPROM, 512-Byte SRAM, 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 e..

    The high-performance, low-power Atmel 8-bit AVR RISC-based microcontroller combines 8KB ISP flash memory, 512B EEPROM, 512-Byte SRAM, 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 software selectable power saving modes, and debugWIRE for on-chip debugging. The device achieves a throughput of 20 MIPS at 20 MHz and operates between 2.7-5.5 volts.
    By executing powerful instructions in a single clock cycle, the device achieves throughputs approaching 1 MIPS per MHz, balancing power consumption and processing speed.

     

    Key Parameters:

     

    • Flash (Kbytes):8 Kbytes
    • Pin Count:8
    • Max. Operating Freq. (MHz):20 MHz
    • CPU:8-bit AVR 
    • Hardware QTouch Acquisition:No
    • Max I/O Pins:6
    • Ext Interrupts:6
    • USB Speed:No
    • USB Interface:No

     

    Datasheet

    Picture of Go Get Stuff

    You will need:

    - Arduino

    - Breadboard

    - ATtiny85 (or ATtiny45)

    - 10uF electrolytic capacitor

    - 220ohm 1/4 watt resistor

    - LED

    - hookup wire

    Please note that some of the links on this page contain Amazon affiliate links. This does not change the price of any of the items for sale. However, I earn a small commission if you click on any of those links and buy anything. I reinvest this money into materials and tools for future projects. If you would like an alternate suggestion for a supplier of any of the parts, please let me know.

    Step 2: Wire the Circuit

    Picture of Wire the Circuit
    Picture of Wire the Circuit
    Picture of Wire the Circuit
    Picture of Wire the Circuit
    3 More Images
    Connect the Arduino to the ATtiny as follows:
    • Arduino +5V      --->  ATtiny Pin 8
    • Arduino Ground --->  ATtiny Pin 4
    • Arduino Pin 10   --->  ATtiny Pin 1
    • Arduino Pin 11    --->  ATtiny Pin 5
    • Arduino Pin 12    --->  ATtiny Pin 6
    • Arduino Pin 13    --->  ATtiny Pin 7

    Step 3: Program the Arduino

    Picture of Program the Arduino
    Picture of Program the Arduino
    Picture of Program the Arduino

    Select the "ArduinoISP" sketch from the "Examples" menu.
    Upload the sketch to your Arduino as you would any other sketch.
    Your Arduino is now configured as a serial programmer that can program other chips.


    Step 4: Filter Cap

    Picture of Filter Cap

    Put the 10uF capacitor between ground and the Arduino reset pin. Make sure to keep an eye on the capacitors polarity (ground to ground!).
    It is rumored you only need this for the Arduino Uno, but I have found it helped matters to include it with earlier versions as well. If you find that it is not working in the next steps, simple remove it and see if that helps.


    Step 5: ATtiny Core Files

    Picture of ATtiny Core Files
    Picture of ATtiny Core Files

    Take note of your sketchbook folder from the Arduino preference menu.
    Create a new folder in your sketchbook folder called "hardware"
    Then, go to this page and download the file: attiny45_85.zip 
    Unzip this file and leave it in the new hardware folder.
    Finally, restart the Arduino programming environment. The new cores should now be loaded.
    Note that there are also core files for a number of other ATtiny chips. This page is a good starting point for interfacing with a wide range of them using the Arduino.


    Step 6: Program the ATtiny

    Picture of Program the ATtiny

    Select from the top menu:
    Tools --> Board --> ATtiny85 (w/ Arduino as ISP)
    (Of course, you will want to select a different chip for this if you are using one.)
    Then open the basic blink example and change the pin number from 13 to 0.
    Finally, upload it as you would any other sketch.
    It should give the following error twice:
    avrdude: please define PAGEL and BS2 signals in the configuration file for part ATtiny85
    avrdude: please define PAGEL and BS2 signals in the configuration file for part ATtiny85
    Simply ignore the error message and you should be good to go.


    Step 7: Test Circuit

    FREE RETURNS

    *for faulty items and in-store drop off for unused items. T&C applies.

    Customer Support

    We really care about you and your order as much as you do. Please contact us without hesitation.

    INTERNATIONAL SHIPPING

    We can ship your order internationally. Please contact us first before proceeding with your order.

    Fast Delivery

    You want your item next day? No problem! We advise contacting us ASAP to insure smooth delivery experience