ATTINY1617-MFR

Overview

The ATtiny1617-MFR is an 8-bit AVR microcontroller from the tinyAVR 1-series, featuring a 20 MHz CPU speed. It includes 16 KB of self-programmable Flash memory, 2 KB of SRAM, and 256 bytes of EEPROM. The device operates within a voltage range of 1.8 V to 5.5 V and supports clock frequencies up to 20 MHz at 4.5 V–5.5 V. It utilizes a 20-pin VQFN package (3x3 mm) and offers extensive peripheral integration including ADCs, DACs, and touch sensing capabilities.

Feature Summary

• Integrated Peripheral Touch Controller (PTC) supporting capacitive touch interfaces with Driven Shield+ technology for improved noise handling.
• Core Independent Peripherals (CIPs) such as TCA, TCB, TCD, and RTC enable CPU offloading for predictable inter-peripheral signaling via the Event System.
• Configurable Custom Logic (CCL) allows implementation of complex logic functions using programmable look-up tables without CPU intervention.
• Single-pin Unified Program and Debug Interface (UPDI) simplifies programming and debugging connections.

Applications

• Capacitive touch interface systems requiring low power consumption and high reliability.
• Battery-powered embedded applications utilizing low-power sleep modes and efficient CIPs.
• Industrial control systems leveraging analog comparators and precise timer counters.
• Smart home devices integrating custom logic and event-driven peripheral interactions.

Procurement Notes

Verify the specific suffix 'MFR' against Microchip's official documentation to confirm package type and temperature grade. Ensure compatibility with existing PCB footprints for the 20-pin VQFN form factor. Confirm that the selected speed grade meets the system's operational frequency requirements at the intended supply voltage.

Selection Notes

Select this component when a balance of moderate Flash capacity and advanced analog features is required in a compact footprint. Consider the ATtiny1617 over smaller variants if additional I/O lines or enhanced touch sensing channels are necessary. Evaluate the need for Core Independent Peripherals to reduce overall system power consumption during active tasks.

Part Context

This device belongs to the tinyAVR 1-series family, designed for cost-sensitive and space-constrained applications. It shares architectural similarities with the ATtiny817 but offers double the Flash memory. The series emphasizes low power operation and ease of use through simplified configuration and unified programming interfaces.

Replacement Considerations

ATtiny1616-MFR: Pin-compatible alternative with reduced Flash memory capacity.

FAQ

What is the maximum operating frequency of the ATtiny1617?

The ATtiny1617 can operate at a maximum frequency of 20 MHz when powered between 4.5 V and 5.5 V.

Does the ATtiny1617 support capacitive touch sensing?

Yes, it includes an integrated Peripheral Touch Controller (PTC) that supports capacitive buttons, sliders, wheels, and 2D surfaces with wake-up on touch functionality.