ATTINY1634-SUR

Overview

The ATtiny1634-SUR is an 8-bit AVR microcontroller in a 20-pin SOIC package. It features 16 KB of self-programmable Flash, 1 KB of SRAM, and 256 bytes of EEPROM. The device operates at speeds up to 12 MHz within the 4.5 V to 5.5 V supply range. It includes two USARTs, a 10-bit ADC with 12 external channels, and dedicated hardware support for QTouch capacitive sensing.

Feature Summary

• Supports capacitive touch sensing via dedicated hardware and QTouch library integration
• Features dual full-duplex USARTs equipped with start frame detection capabilities
• Includes a calibrated 8MHz internal oscillator with temperature compensation options
• Provides multiple low-power operating modes including Idle, Standby, and Power-down

Applications

• Capacitive touch interface implementations
• Industrial control systems requiring robust communication protocols
• Battery-powered devices utilizing extended standby power modes
• Applications necessitating high endurance non-volatile memory segments

Procurement Notes

Verify that the ordering suffix 'SUR' corresponds to the tape and reel packaging format as specified in the official documentation. Confirm the speed grade matches the required operational voltage and frequency constraints. Ensure the component meets the extended industrial temperature range specifications if deployed in harsh environments.

Selection Notes

Select this model when specific requirements include integrated capacitive touch sensing hardware or dual USART interfaces. Consider the 16 KB Flash capacity for complex firmware applications. Evaluate the 12 MHz maximum speed against the available supply voltage to ensure stable operation within the designated performance envelope.

Part Context

This component belongs to the ATtiny1634 family within the tinyAVR series. It utilizes the enhanced RISC architecture typical of Microchip's 8-bit AVR line. The device is manufactured using high-density non-volatile memory technology, offering significant program storage relative to its pin count and physical footprint.

Replacement Considerations

ATtiny1634-MU

FAQ

What is the function of the ULP oscillator regarding port pins?

The Ultra Low Power (ULP) oscillator must be active for Port Pin PB3 to function reliably as an input; otherwise, the pin may not perform correctly.

How does the device handle data retention reliability?

Reliability qualification indicates a projected data retention failure rate of less than 1 PPM over 20 years at 85°C or 100 years at 25°C.