Microchip Technology ATTINY861-20MU
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $2.57 | $2.57 |
| 15+ | $2.49 | $37.35 |
| 25+ | $2.44 | $61.00 |
| 50+ | $2.30 | $115.00 |
| 100+ | $2.03 | $203.00 |
| N+ | $0.41 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | Microchip Technology |
| Product Series | AVR® ATtiny |
| Packaging | Tray | Tray |
| Core Processor | AVR |
| Core Size | 8-Bit |
| Speed | 20MHz |
| Connectivity | USI |
| Peripherals | Brown-out Detect/Reset, POR, PWM, WDT |
| Number of I/O | 16 |
| Program Memory Size | 8KB (4K x 16) |
| Program Memory Type | FLASH |
| EEPROM Size | 512 x 8 |
| RAM Size | 512 x 8 |
| Voltage - Supply (Vcc/Vdd) | 2.7V ~ 5.5V |
| Data Converters | A/D 11x10b |
| Oscillator Type | Internal |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Grade | - |
| Qualification | - |
| Mounting Type | Surface Mount |
| Supplier Device Package | 32-VQFN (5x5) |
| Package / Case | 32-VFQFN Exposed Pad |
| ROHS |
The Microchip ATTINY861-20MU is a high-performance 8-bit AVR microcontroller in a 32-pin VFQFN package. It operates from 2.7V to 5.5V and runs at up to 20MHz, delivering robust processing for demanding applications. With 8KB Flash and 512B RAM, it includes PWM, WDT, and Brown-out Reset. Its compact package with exposed pad aids thermal dissipation in power-sensitive designs.
- High-speed 20MHz core – enables complex real-time algorithms.
- 8KB Flash memory – accommodates larger firmware without external storage.
- 32-pin VFQFN with exposed pad – improves heat dissipation and saves space.
- Multiple PWM channels – simplifies multi-axis motor control.
Brushless DC Motor Control
The 20MHz AVR core with multiple PWM channels can drive BLDC motors in drones or cooling fans.
Power Supply Monitoring
With 8KB Flash, it can implement voltage/current monitoring and fault detection in SMPS units.
Robotics
The 32-pin package provides enough I/O for servo control and sensor interfacing in small robots.
LED Matrix Displays
Its PWM capabilities and 512B RAM support multiplexed LED matrix driving for signage.
Automotive Sensors
Operating at -40°C to 85°C, it suits position or pressure sensors in engine compartments.
Medical Devices
Reliable operation and 8KB Flash enable infusion pump or patient monitor control.
- Q: What is the supply voltage range?
- A: It operates from 2.7V to 5.5V, suitable for standard 3.3V and 5V systems.
- Q: What is the maximum clock speed?
- A: The AVR core runs at up to 20MHz, providing high throughput for its size.
- Q: How much Flash memory is available?
- A: It has 8KB of Flash (4K x 16 words) for larger programs.
- Q: What package does it come in?
- A: It is available in a 32-pin VFQFN package with exposed pad for improved thermal performance.
- Q: Does it support PWM?
- A: Yes, it includes multiple PWM channels for motor or lighting control.
- Q: What is the supply voltage range?
- A: It operates from 2.7V to 5.5V, suitable for standard 3.3V and 5V systems.
- Q: What is the maximum clock speed?
- A: The AVR core runs at up to 20MHz, providing high throughput for its size.
- Q: How much Flash memory is available?
- A: It has 8KB of Flash (4K x 16 words) for larger programs.
- Q: What package does it come in?
- A: It is available in a 32-pin VFQFN package with exposed pad for improved thermal performance.
- Q: Does it support PWM?
- A: Yes, it includes multiple PWM channels for motor or lighting control.

ATTINY861-20MU.pdf