ATTINY1614-SSNR

Overview

The ATTINY1614-SSNR is an 8-bit AVR microcontroller from the tinyAVR 1-series, housed in a 14-pin SOIC package. It features a 20 MHz CPU with a hardware multiplier, 16 KB of self-programmable Flash memory, 2 KB of SRAM, and 256 bytes of EEPROM. The device includes a Peripheral Touch Controller (PTC) supporting up to 14 self-capacitance channels, two 10-bit ADCs, three 8-bit DACs, and multiple timers including TCA, TCB, TCD, and RTC. Communication interfaces include USART, SPI, and TWI. Operating voltage ranges from 1.8 V to 5.5 V, with an industrial temperature range of -40°C to +105°C.

Feature Summary

• Integrates a Peripheral Touch Controller (PTC) for capacitive touch sensing with Driven Shield+ technology.
• Features Core Independent Peripherals (CIPs) such as TCD optimized for control applications and Event System for inter-peripheral signaling.
• Includes Configurable Custom Logic (CCL) with programmable look-up tables for custom logic implementation without CPU intervention.

Applications

• Capacitive touch interface implementations using PTC buttons or sliders.
• Low-power sensor nodes utilizing Event System and sleep modes.
• Control loops requiring precise timing via TCD timer.
• Data acquisition systems employing dual 10-bit ADCs and analog comparators.

Procurement Notes

Verify the suffix SSNR corresponds to the 14-pin SOIC package and industrial temperature grade (-40°C to +105°C). Confirm RoHS compliance status through official Microchip documentation. Ensure ordering codes match the specific speed grade required for your voltage and frequency constraints. Cross-reference datasheet DS40002204A for pinout accuracy.

Selection Notes

Select this component when a compact 14-pin solution is required alongside integrated capacitive touch capabilities. The presence of the Peripheral Touch Controller eliminates external touch controller ICs. Consider the 20 MHz performance limit at lower voltages if operating below 4.5 V. Evaluate the need for CCL and Event System features to reduce CPU load in signal processing tasks.

Part Context

This part belongs to the ATtiny1614/1616/1617 family within the tinyAVR 1-series. These devices share the same core architecture but differ in package options and I/O counts. The 1614 variant specifically utilizes a 14-pin footprint, offering a balance between peripheral count and board space efficiency compared to larger packages in the series.

Replacement Considerations

Direct pin-compatible replacements within the same family include other ATtiny1614 variants with different suffixes indicating package or temperature changes. Verify that any substitute maintains the 14-pin SOIC form factor and supports the required 20 MHz operation at the target supply voltage.

FAQ

Does the ATTINY1614 support capacitive touch sensing?

Yes, it integrates a Peripheral Touch Controller (PTC) capable of handling up to 14 self-capacitance channels and up to 49 mutual capacitance channels.

What is the maximum operating frequency at 1.8V?

At a supply voltage of 1.8V to 5.5V, the device supports operation up to 5 MHz. Higher frequencies require higher supply voltages.