ATTINY1634R-MU

Overview

The ATtiny1634R-MU is an 8-bit AVR microcontroller in a 20-pad QFN/MLF package. It features 16 KB of self-programmable Flash, 1 KB SRAM, and 256 bytes EEPROM. The device operates at up to 12 MHz with a supply voltage range of 1.8 V to 5.5 V. Key peripherals include two USARTs, a 10-bit ADC with 12 channels, hardware capacitive touch sensing support, and debugWIRE. The internal oscillator has ±2% accuracy.

Feature Summary

• Supports dedicated hardware and library integration for capacitive touch sensing interfaces
• Includes dual full-duplex USARTs equipped with start frame detection capabilities
• Features on-chip debugWIRE system for programming and debugging via the SPI port

Applications

• Applications requiring integrated capacitive touch sensing interfaces
• Systems utilizing dual serial communication links with start frame detection
• Embedded designs necessitating on-chip debugging and programming

Procurement Notes

Verify the specific ordering suffix 'R' corresponds to the required ±2% internal oscillator accuracy. Confirm the MLF package dimensions match the design footprint. Ensure the operating environment stays within the specified industrial temperature range and voltage limits.

Selection Notes

Select this variant when precise internal clock calibration is critical for timing-sensitive applications. The R suffix indicates tighter oscillator tolerance compared to standard versions. Evaluate peripheral requirements against the available timer, ADC, and communication interfaces.

Part Context

This component belongs to the ATtiny1634 series within the Microchip tinyAVR family. It utilizes the high-performance AVR 8-bit RISC architecture. The device is manufactured using non-volatile memory technology allowing in-system reprogramming.

Replacement Considerations

ATtiny1634-MU (±10% oscillator accuracy)

FAQ

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

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

How many general purpose I/O lines are available?

The device provides 18 programmable general purpose I/O lines across Ports A, B, and C.