ATTINY1616-SN

Overview

The ATTINY1616-SN is an 8-bit microcontroller from the tinyAVR 1-series, utilizing the AVR core with a hardware multiplier. It features 16 KB of in-system self-programmable Flash memory, 2 KB of SRAM, and 256 bytes of EEPROM. The device operates at a maximum clock frequency of 20 MHz and includes a Peripheral Touch Controller (PTC) for capacitive touch interfaces. It supports I/O voltages from 1.8 V to 5.5 V and is housed in a 20-pin SOIC package.

Feature Summary

• Integrates a Peripheral Touch Controller (PTC) supporting capacitive touch buttons, sliders, wheels, and 2D surfaces with Driven Shield+ technology.
• Includes Core Independent Peripherals (CIPs) such as a Real-Time Counter (RTC), Timer/Counter Type D (TCD), and Configurable Custom Logic (CCL).
• Features an Event System (EVSYS) for CPU-independent inter-peripheral signaling and automated CRC memory scan capabilities.

Applications

• Capacitive touch interface implementations using PTC channels.
• Low-power embedded control systems requiring real-time counting and event-driven operations.
• Applications necessitating robust analog signal processing via dual ADCs and DACs.

Procurement Notes

Verify the specific suffix 'SN' corresponds to the 20-pin SOIC package and commercial temperature range (-40°C to +105°C) as documented in the official datasheet. Confirm that the AEC-Q100 qualification status applies to the specific automotive variant if required, noting that standard products may have separate documentation. Ensure compatibility with the Single-pin Unified Program and Debug Interface (UPDI) for programming needs.

Selection Notes

Select this component when a balance of moderate program memory (16 KB) and extensive analog/touch peripherals is required within a compact 20-pin form factor. It is suitable for designs needing multiple timers, including a dedicated control-optimized TCD, and flexible I/O configurations. Consider the operating voltage range of 1.8 V to 5.5 V for power supply flexibility.

Part Context

This part belongs to the ATtiny1614/1616/1617 family within the tinyAVR 1-series. These microcontrollers share a common architecture featuring the AVR CPU, hardware multiplier, and similar peripheral sets, differentiated primarily by pin count and memory size. The 1616 model specifically offers 16 KB Flash and 20 pins, bridging the gap between smaller 14-pin and larger 24-pin variants.

Replacement Considerations

Compatible substitutes within the same series include ATTINY1614-SN (14-pin SOIC) and ATTINY1617-SN (24-pin SOIC), provided pin count differences are accommodated in the design. Other members of the tinyAVR 1-series may serve as alternatives if memory or I/O requirements align.

FAQ

What touch sensing technologies does the integrated PTC support?

The Peripheral Touch Controller (PTC) supports capacitive touch buttons, sliders, wheels, and 2D surfaces, featuring Driven Shield+ and Boost Mode technologies for improved noise handling.

How does the Event System benefit peripheral operation?

The Event System allows for CPU-independent and predictable inter-peripheral signaling, enabling peripherals to communicate directly without CPU intervention, which improves efficiency and timing accuracy.