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ATTINY861A-SU Breakout
MCU AVR 8BIT 8KB FLASH 20SOIC
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Design a Custom BoardAbout This Component
8-bit AVR microcontroller with 8KB in-system programmable flash, 512 bytes SRAM, and 512 bytes EEPROM. Features 16 I/O lines, 10-bit ADC with 16 differential channels, three PWM outputs, and multiple timers. Operates from 1.8–5.5V with up to 20 MHz operation and includes debugWIRE debug system, watchdog timer, and multiple low-power sleep modes.
Package: SOIC-20W (7.5mm wide) · 20 pins
Why does this need a breakout?
The 1.27mm pin pitch makes hand-soldering this 20-pin SOIC challenging and error-prone. A breakout board brings all pins to standard 0.1" spacing, enabling reliable breadboard prototyping and simplifying development of USB-to-UART interfaces without requiring reflow soldering or specialized equipment.
Component specifications
ELECTRICAL CHARACTERISTICS
| Manufacturer | Microchip Technology |
| Part Number | ATTINY861A-SU |
| Package | SOIC-20W (7.5mm wide) |
| Pin Count | 20 |
| Core Processor | AVR |
| Core Size | 8-Bit |
| Number of I/O | 16 |
| Program Memory Size | 8KB (4K x 16) |
| Speed | 20MHz |
| Voltage - Supply (Vcc/Vdd) | 1.8V ~ 5.5V |
What's Included
BILL OF MATERIALS
- 1x ATTINY861A-SU soldered onto breakout PCB
- Pin headers pre-soldered (2.54mm / 0.1" pitch)
- All IC pins broken out to 2.54mm headers
Breakout Board Design
PCB SPECIFICATIONS