ATTINY1634R-MUR

Overview

The ATtiny1634R-MUR is an 8-bit AVR microcontroller featuring a 20-pad QFN/MLF package. It includes 16 KB of in-system programmable Flash, 1 KB of SRAM, and 256 bytes of EEPROM. The device operates at frequencies up to 12 MHz within the 4.5 V to 5.5 V supply range. It supports industrial temperatures from -40°C to +85°C and extended temperatures from -40°C to +105°C. The 'R' suffix indicates a calibrated internal oscillator with ±2% accuracy.

Feature Summary

• Capacitive touch sensing support via dedicated hardware and QTouch library
• Dual full-duplex USARTs with start frame detection
• On-chip debug system (debugWIRE) for programming and debugging
• Calibrated ultra-low power 32 kHz oscillator

Applications

• Battery-powered devices requiring low power consumption
• Applications utilizing capacitive touch interfaces
• Systems requiring dual serial communication channels
• Industrial control systems operating across wide temperature ranges

Procurement Notes

Verify that the ordering code matches the required speed grade and temperature range. Confirm the 'R' suffix corresponds to the specific oscillator calibration accuracy needed for your design. Ensure the MLF package dimensions align with your PCB footprint requirements. Check for any silicon errata related to ULP oscillator usage if applicable to your implementation.

Selection Notes

Select this component when high performance per milliwatt is required due to its single-cycle RISC architecture. Choose the 'R' variant if precise internal clock timing is critical without external crystals. Consider the package availability and ensure the voltage range meets the system's power supply specifications.

Part Context

This part belongs to the ATtiny1634 family within Microchip's tinyAVR series. It shares core architecture with variants differing in package type or oscillator accuracy. The MLF package provides a compact solution for space-constrained designs while maintaining robust I/O capabilities and peripheral integration typical of the enhanced RISC architecture.

Replacement Considerations

ATtiny1634-MU: Identical functionality but with ±10% oscillator accuracy and bulk packaging.

FAQ

What does the 'R' suffix indicate in the part number?

The 'R' suffix denotes that the device features a calibrated internal oscillator with ±2% accuracy.

Can the ATtiny1634R-MUR be used for capacitive touch applications?

Yes, it includes dedicated hardware support for capacitive touch sensing and is compatible with the QTouch Library.