ATTINY1616-SNR

Overview

The ATTINY1616-SNR is an 8-bit AVR microcontroller from the tinyAVR® 1-series, operating at up to 20 MHz. It features 16 KB of self-programmable Flash memory, 2 KB of SRAM, and 256 bytes of EEPROM. The device includes a Peripheral Touch Controller (PTC), two 10-bit ADCs, three 8-bit DACs, and multiple timers including TCA, TCB, TCD, and RTC. It supports I2C, SPI, and USART interfaces within a 20-pin SOIC package.

Feature Summary

• Integrated Capacitive Touch Controller with Driven Shield+ technology for robust touch sensing
• Configurable Custom Logic (CCL) allowing hardware logic implementation without CPU intervention
• Event System enabling direct peripheral-to-peripheral signaling for low-latency operation
• Single-pin Unified Program and Debug Interface (UPDI) for simplified programming and debugging

Applications

• Capacitive touch interface designs for buttons, sliders, and wheels
• Low-power sensor nodes utilizing event-driven architectures
• Industrial control applications requiring configurable custom logic
• General-purpose embedded systems with analog signal processing needs

Procurement Notes

Verify the specific suffix 'SNR' against the manufacturer's current ordering guide to confirm package type and temperature grade. Ensure compatibility with UPDI-based debuggers such as Atmel-ICE or AVR Dragon. Check for RoHS compliance documentation if required by your manufacturing standards.

Selection Notes

Select this component when a balance of moderate program memory and advanced analog/touch capabilities is required. The tinyAVR 1-series architecture offers improved power efficiency compared to older generations. Consider the 20-pin SOIC package constraints regarding available I/O lines versus other pin counts in the series.

Part Context

This part belongs to the ATtiny1614/1616/1617 family within the tinyAVR® 1-series. These devices share a common core architecture but differ in memory sizes and pin counts. The 1616 variant specifically provides 16 KB Flash and 20 pins, positioning it between the smaller 1614 and larger 1617 models.

Replacement Considerations

Direct functional substitutes include other variants within the ATtiny1614/1616/1617 family, such as the ATtiny1614 or ATtiny1617, provided pin count and memory requirements align. Cross-family replacements like PIC16F161x require significant software and hardware redesign.