ATtiniy85 Microcontroller - Black keyhole

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ATtiniy85 Microcontroller

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A Atmel ATiniy85 microcontroller is an 8-pin IC available in both surface-mount and through-hole DIL packages. The device is designed with minimum of external componets.

ATinity 85 has three diifferent types of memory:
       1. 8kb flash memory wich will be store programm instructions.

       2. 256 bytes of  SRAM. which is used to contain the data while the execution of instruction.
       3. 512 bytes of EEPROM that is used to store nonvolatile data that needs to be retained after a loss of  power

                                            ATtiny85 Block diagram


  • ATtiny85 used in development boards and hobbies projects.
  • In the industrial control system, the PIC is used due to its multiple functionalities due to a specific operation on special conditions.
  • PIC is also used for analog manipulation and its measurement.
  • In small commercial devices, the PIC ATtiny85 is used.

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Programming the ATtiny with AVR Studio

 The ATtiny is usually programmed in C, which offers a good compromise between
performance and readability. We define readability as the property of a program that
allows it to be understood by someone other than the person who wrote it.
The standard AVR Studio way of doing things is powerful and flexible, but the
C that you need to write is at a fairly low level, and not nearly as accessible as the
BASIC Stamp language.

Programming the ATtiny with Arduino

    Many people use the Arduino library to simplify the writing of code. This library
includes all sorts of utility functions, rather like the commands found in the BASIC
Stamp language. The Arduino library was developed from a project called Wiring,
which is a useful library for AVR microcontrollers. It is used mostly with the Arduino
development boards However, the Arduino IDE (different from AVR
Studio) can also be used to write the programs for most processors in the AVR 8-bit
range, including the ATtiny85.
Whether you are programming the microcontroller with AVR Studio or Arduino,
you will need USB programmer hardware that is connected to a USB port of your
computer. The programmers use a technique called in-circuit system programming
(ICSP), which uses a six pin header connected to pins on the ATtiny. This is one of the
reasons that you use a resistor to tie up the RESET pin, as it is one of the pins used by
the programmer. It is quite common to design this header into the PCB for the circuit,
during development, allowing changes to be easily made to the firmware.

ATtiny85 is based on Atmel Attiny85 MCU. Talking about the size this is almost 1/3 of the size of an Arduino nano but offers quite a few specs as compared to Arduino uno. ATtiny85 is a 8 pin IC out of which 6 pins are GPIO pins, 2 power pins. And unlike Atmega328p IC it doesn’t require any extra passive components to function. Specifications of ATtiny85 includes

  • 6 I/O pins
  • About 6k Flash Memory
  • Supports I2C and SPI protocols
  • PWM on 3 pins (P0, P1 and P4)
  • ADC on 4 pins (P2 to P5)
  • External Interrupt on pin P2

1 comment:

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