ATTINY85-20PU DIP-8 IC MCU - Overview

The ATTINY85-20PU is a small and efficient 8-pin microcontroller from the Atmel (now Microchip) ATTINY series. It is widely used in small, low-power projects where a full-sized Arduino may be overkill. With 8 KB of flash memory, 512 bytes of SRAM, and 6 I/O pins, it is a great option for projects where space and power consumption are important factors.

Pinout

Here is the pinout diagram for the ATTINY85-20PU:

Wiring Instructions

To wire the ATTINY85-20PU to an Arduino for programming, follow these steps:

1. VCC (Pin 8): Connect to the 5V supply from your Arduino board.
2. GND (Pin 4): Connect to the ground (GND) on your Arduino board.
3. Reset Pin (Pin 1): Connect to an appropriate reset circuit or leave unconnected if using the internal reset on Arduino.
4. Clock (Pin 2): Connect to a crystal oscillator or a resonator for accurate clock timing, or use the internal clock if you prefer.
5. I/O Pins (Pin 3, 5, 6, and 7): Connect to the desired peripherals, such as sensors, LEDs, or motors. These pins can be configured as inputs or outputs in your code.

Sample Code

Below is a simple example to blink an LED connected to pin 0 of the ATTINY85. This code can be uploaded using Arduino IDE with the ATTINY85 bootloader installed:

void setup() {
  pinMode(0, OUTPUT);  // Set pin 0 as an output
}

void loop() {
  digitalWrite(0, HIGH);  // Turn the LED on
  delay(1000);            // Wait for 1 second
  digitalWrite(0, LOW);   // Turn the LED off
  delay(1000);            // Wait for 1 second
}
    

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Applications

The ATTINY85-20PU is perfect for small embedded applications. Some of the common use cases include:

• Battery-powered projects
• Low-power sensors
• LED projects
• Home automation
• Small robotics

Key Features

• 8-pin DIP package
• 8 KB Flash memory
• 512 Bytes SRAM
• 6 I/O pins
• Internal 8 MHz clock
• Low power consumption