ATtiny25 - Uncategorized Microchip - Free user manual and instructions
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| Product Type | Microcontroller |
| Brand | Microchip Technology |
| Model | ATtiny25 |
| Package | 8-pin PDIP, SOIC, or TSSOP |
| Dimensions (PDIP) | 9.27 mm x 6.35 mm |
| Weight (approximate) | 0.6 g |
| Supply Voltage | 2.7 V – 5.5 V |
| Maximum Clock Frequency | 20 MHz |
| Flash Memory | 2 KB |
| SRAM | 128 B |
| EEPROM | 128 B |
| Number of I/O Pins | 6 |
| Analog Inputs | 4 channels, 10-bit ADC |
| Interfaces | USI (SPI, I2C), DebugWIRE |
| Operating Temperature Range | -40°C to +85°C |
| Programming Interface | ISP (In-System Programming) |
| Power Consumption (active) | ~1.5 mA at 5 V, 1 MHz |
| Power Consumption (power-down) | < 0.1 µA |
| Special Features | Internal oscillator, watchdog timer, brown-out detection |
| ESD Sensitivity | Handle with antistatic precautions |
Frequently Asked Questions - ATtiny25 Microchip
How do I program the ATtiny25?
The ATtiny25 supports In-System Programming (ISP) via a 6-pin header. Use a programmer like USBasp or AVR ISP mkII with software such as AVRDUDE or Atmel Studio.
What is the operating voltage range of ATtiny25?
The operating voltage is 2.7 V to 5.5 V. At lower voltages, the maximum clock frequency is reduced.
Can the ATtiny25 be used with Arduino?
Yes, with Arduino IDE and an appropriate core (e.g., ATTinyCore by Spence Konde). You need an ISP programmer to upload sketches.
What are the available sleep modes?
The ATtiny25 offers Idle, ADC Noise Reduction, Power-down, and Standby modes. Power-down mode drains less than 0.1 µA.
How many PWM channels does it have?
It has two 8-bit PWM outputs on Timer0 and a 16-bit Timer1 that can also generate PWM. The actual number of pins available for PWM is limited to the number of I/O pins.
Does the ATtiny25 have an internal oscillator?
Yes, it has an internal RC oscillator calibrated to 8 MHz (selectable frequencies). It also supports external crystal or clock inputs.
What is the maximum ADC sampling rate?
With a 10-bit resolution, the ADC can sample at up to 15 kSPS depending on clock speed. The clock source is selectable from the system clock.
Can the ATtiny25 be used for battery-powered projects?
Absolutely. Its low power consumption (active: ~1.5 mA at 1 MHz, power-down: <0.1 µA) makes it ideal for battery-operated devices.
What is the difference between ATtiny25 and ATtiny45/85?
The main difference is memory: ATtiny25 has 2 KB Flash, while ATtiny45 has 4 KB and ATtiny85 has 8 KB. They are pin-compatible and share the same features.
Where can I find pinout and datasheet?
The official datasheet is available on Microchip's website (product number: ATtiny25). It includes pinout diagrams, electrical characteristics, and register descriptions.
User questions about ATtiny25 Microchip
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Product information
Brand : Microchip
Model : ATtiny25
Category : Uncategorized