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Product attributes Property Value
Manufacturer Microchip Technology
Product Series tinyAVR™ 1, Functional Safety (FuSa)
Packaging Cut Tape (CT) | Tape & Reel (TR)
Core Processor AVR
Core Size 8-Bit
Speed 20MHz
Connectivity I2C, IrDA, LINbus, SPI, UART/USART
Peripherals Brown-out Detect/Reset, POR, WDT
Number of I/O 18
Program Memory Size 8KB (8K x 8)
Program Memory Type FLASH
EEPROM Size 128 x 8
RAM Size 512 x 8
Voltage - Supply (Vcc/Vdd) 1.8V ~ 5.5V
Data Converters A/D 12x10b; D/A 1x8b
Oscillator Type Internal
Operating Temperature -40°C ~ 105°C (TA)
Grade -
Qualification AEC -
Mounting Type Surface Mount
Supplier Device Package 20-VQFN (3x3)
Package / Case 20-VFQFN Exposed Pad
ROHS RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

The Microchip ATtiny816 is an 8-bit AVR MCU offering 8KB Flash and 512 bytes RAM in a 20-VFQFN package. It runs at 20MHz with a wide 1.8V-5.5V supply range. Designed for low-power and industrial applications, it includes brown-out detection, POR, and WDT for robust operation.

  • Low-voltage operation (1.8V): Extends battery life in portable devices.
  • 20MHz performance: Handles real-time tasks efficiently.
  • 8KB Flash: Sufficient for moderate-complexity firmware.
  • Robust reset features: POR and WDT prevent system lockups.

Wearable Fitness Trackers

Low 1.8V operation and 20MHz speed enable step counting and heart-rate monitoring.

Smart Agriculture Sensors

8KB Flash handles soil moisture and temperature logging with low power consumption.

IoT End Nodes

Wide voltage range and WDT ensure reliable operation in battery-powered wireless sensors.

Consumer Electronics (Toys, Remote Controls)

Cost-effective 8-bit core with enough memory for IR protocols and button debouncing.

Security Systems (Motion Detectors)

Fast wake-up and PWM support PIR sensor processing and alarm signaling.

Portable Instrumentation

Compact QFN package and 1.8V operation fit handheld multimeters and probes.

Q: What is the supply voltage range?
A: It operates from 1.8V to 5.5V, supporting low-power and standard logic.
Q: What is the maximum speed?
A: The AVR core runs at up to 20MHz.
Q: How much Flash memory does it have?
A: It provides 8KB (8K x 8) of program memory.
Q: What is the temperature range?
A: It is rated for -40°C to 105°C.
Q: Does it include a watchdog timer?
A: Yes, it has a WDT for system reliability.
Base Product Number : ATTINY816
1.8V 20MHz 8-bit MCU 8KB Flash AVR IoT low power Microchip QFN-20 wearable
Q: What is the supply voltage range?
A: It operates from 1.8V to 5.5V, supporting low-power and standard logic.
Q: What is the maximum speed?
A: The AVR core runs at up to 20MHz.
Q: How much Flash memory does it have?
A: It provides 8KB (8K x 8) of program memory.
Q: What is the temperature range?
A: It is rated for -40°C to 105°C.
Q: Does it include a watchdog timer?
A: Yes, it has a WDT for system reliability.