Microchip Technology ATTINY25-20MUR
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $1.15 | $1.15 |
| 15+ | $1.11 | $16.65 |
| 25+ | $1.09 | $27.25 |
| 50+ | $1.03 | $51.50 |
| 100+ | $0.91 | $91.00 |
| N+ | $0.18 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | Microchip Technology |
| Product Series | AVR® ATtiny, Functional Safety (FuSa) |
| Packaging | Cut Tape (CT) | Tape & Reel (TR) |
| Core Processor | AVR |
| Core Size | 8-Bit |
| Speed | 20MHz |
| Connectivity | USI |
| Peripherals | Brown-out Detect/Reset, POR, PWM, WDT |
| Number of I/O | 6 |
| Program Memory Size | 2KB (1K x 16) |
| Program Memory Type | FLASH |
| EEPROM Size | 128 x 8 |
| RAM Size | 128 x 8 |
| Voltage - Supply (Vcc/Vdd) | 2.7V ~ 5.5V |
| Data Converters | A/D 4x10b |
| Oscillator Type | Internal |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Grade | - |
| Qualification AEC | - |
| Mounting Type | Surface Mount |
| Supplier Device Package | 20-QFN-EP (4x4) |
| Package / Case | 20-WFQFN Exposed Pad |
| ROHS |
The Microchip ATTINY25-20MUR is a compact 8-bit AVR microcontroller in a 20-WFQFN package. It operates from 2.7V to 5.5V at up to 20MHz, with 2KB of Flash and 128 bytes of SRAM. Featuring PWM, Brown-out Reset, POR, and WDT, it is designed for space-constrained, battery-powered applications.
- Ultra-small WFQFN package – ideal for miniaturized wearable and IoT devices.
- High-speed 20MHz operation – enables real-time PWM and sensor processing.
- Low power consumption – extends battery life in portable applications.
- Integrated BOR and WDT – improves system reliability without extra components.
Wearable Fitness Trackers
The 20-WFQFN package is ultra-thin, while 2.7V operation matches Li-ion battery ranges, enabling step counting and heart-rate monitoring.
LED Strip Controllers
With 20MHz speed and PWM, it can generate multiple channels for RGB LED color mixing in decorative lighting.
Small Drone ESCs
Its fast PWM and small footprint make it suitable for controlling brushless motors in micro drones.
Portable Instrumentation
The 2KB Flash handles calibration data, while BOR ensures stable readings during battery discharge.
Smart Toys
Low cost and small size allow integration into interactive toys with sound and motion effects.
Security Key Fobs
Its low power consumption extends battery life, while WDT prevents code lockups during RF transmission.
- Q: What is the operating voltage range?
- A: The ATTINY25-20MUR operates from 2.7V to 5.5V, suitable for 3V and 5V systems.
- Q: What is the maximum speed?
- A: It runs at up to 20MHz, providing fast execution for time-sensitive tasks.
- Q: How much memory does it have?
- A: It includes 2KB of Flash (1K x 16-bit) and 128 bytes of SRAM.
- Q: What package is this?
- A: It is in a 20-WFQFN exposed pad package, ideal for compact PCB layouts.
- Q: Does it have PWM and watchdog?
- A: Yes, it features PWM, Brown-out Detect/Reset, POR, and WDT for reliable operation.
- Q: What is the operating voltage range?
- A: The ATTINY25-20MUR operates from 2.7V to 5.5V, suitable for 3V and 5V systems.
- Q: What is the maximum speed?
- A: It runs at up to 20MHz, providing fast execution for time-sensitive tasks.
- Q: How much memory does it have?
- A: It includes 2KB of Flash (1K x 16-bit) and 128 bytes of SRAM.
- Q: What package is this?
- A: It is in a 20-WFQFN exposed pad package, ideal for compact PCB layouts.
- Q: Does it have PWM and watchdog?
- A: Yes, it features PWM, Brown-out Detect/Reset, POR, and WDT for reliable operation.

ATTINY25-20MUR.pdf