Microchip Technology ATTINY861A-XU
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $1.64 | $1.64 |
| 15+ | $1.59 | $23.85 |
| 25+ | $1.56 | $39.00 |
| 50+ | $1.47 | $73.50 |
| 100+ | $1.30 | $130.00 |
| N+ | $0.26 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | Microchip Technology |
| Product Series | AVR® ATtiny |
| Packaging | Tube | |
| Core Processor | AVR |
| Core Size | 8-Bit |
| Speed | 20MHz |
| Connectivity | USI |
| Peripherals | Brown-out Detect/Reset, POR, PWM, Temp Sensor, 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) | 1.8V ~ 5.5V |
| Data Converters | A/D 11x10b |
| Oscillator Type | Internal |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Grade | - |
| Qualification AEC | - |
| Mounting Type | Surface Mount |
| Supplier Device Package | 20-TSSOP |
| Package / Case | 20-TSSOP (0.173", 4.40mm Width) |
| ROHS |  |
The Microchip ATTINY861A-XU is a high-performance 8-bit AVR microcontroller in a 20-pin TSSOP package. It operates from 1.8V to 5.5V and runs at up to 20MHz, offering a good balance of speed and power efficiency. With 8KB Flash and 512 bytes of SRAM, it supports moderate-complexity firmware. Integrated peripherals include PWM, a temperature sensor, Brown-out Detection, and a Watchdog Timer, making it a versatile choice for sensor nodes, lighting, and motor control. Its wide temperature range suits industrial and automotive environments.
- Integrated temperature sensor reduces external component count and simplifies thermal monitoring.
- 1.8V operation enables direct battery-powered designs with minimal voltage regulation.
- 20MHz AVR core delivers fast interrupt response for time-critical control.
- Compact TSSOP-20 package fits high-density PCBs.
Smart Lighting Controllers
The built-in PWM channels and 20MHz speed allow smooth dimming and color mixing in LED drivers, while the 1.8V operation supports low-power standby.
Environmental Data Loggers
The internal temperature sensor eliminates the need for an external thermistor, reducing BOM cost in weather stations and HVAC controllers.
Motor Speed Control
With 512B RAM and fast PWM, this MCU can implement closed-loop speed control for small DC fans or pumps in consumer appliances.
Battery Management Systems
The 1.8V minimum voltage enables direct monitoring of single-cell Li-ion batteries, with WDT ensuring safe shutdown on fault conditions.
Wearable Fitness Devices
The tiny TSSOP package and low-power sleep modes make it ideal for step counters or heart-rate monitors that run on coin cells.
Automotive Sensor Interfaces
Its -40°C to +85°C rating and robust I/O handle signal conditioning for pressure or position sensors in engine bays.
- Q: What is the supply voltage range?
- A: It operates from 1.8V to 5.5V, supporting low-voltage and standard 5V logic.
- Q: What is the maximum clock speed?
- A: The AVR core runs at up to 20MHz, enabling fast response in real-time applications.
- Q: How much Flash and RAM does it have?
- A: It provides 8KB (4K x 16) of Flash and 512 bytes of SRAM for moderate program and data storage.
- Q: Does it include a temperature sensor?
- A: Yes, it has an internal temperature sensor, useful for environmental monitoring.
- Q: What package is this variant?
- A: It comes in a 20-pin TSSOP (0.173" width) package, suitable for compact layouts.
ATTINY861A-XU.pdf
- Q: What is the supply voltage range?
- A: It operates from 1.8V to 5.5V, supporting low-voltage and standard 5V logic.
- Q: What is the maximum clock speed?
- A: The AVR core runs at up to 20MHz, enabling fast response in real-time applications.
- Q: How much Flash and RAM does it have?
- A: It provides 8KB (4K x 16) of Flash and 512 bytes of SRAM for moderate program and data storage.
- Q: Does it include a temperature sensor?
- A: Yes, it has an internal temperature sensor, useful for environmental monitoring.
- Q: What package is this variant?
- A: It comes in a 20-pin TSSOP (0.173" width) package, suitable for compact layouts.
