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ATTINY861A-SUR Breakout
MCU AVR 8BIT 8KB FLASH 20SOIC 20MHZ
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Design a Custom BoardAbout This Component
8-bit AVR microcontroller with 8KB flash program memory, 512B EEPROM, and 512B SRAM. Features 16 I/O lines, 10-bit ADC with 16 differential channels and programmable gain, three PWM outputs, and timers. Operates at 1.8–5.5V with speeds up to 20 MHz and includes integrated debugWIRE debugging, brown-out detection, and multiple sleep modes for low-power applications.
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-SUR |
| 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-SUR 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