CYTT21100-44LQI28

Overview

The CYTT21100-44LQI28 is a Cypress Semiconductor (now Infineon) integrated circuit classified as a 32-bit microcontroller. It utilizes a 44-QFN exposed pad package with dimensions of 5x5 mm and supports surface mount installation. The device operates within a supply voltage range of 1.71 V to 5.5 V and functions at temperatures between -40 °C and 85 °C. Connectivity options include I²C and SPI interfaces, while the core processor runs at a speed of 500 kHz. The component features 28 available I/O pins.

Feature Summary

• 32-bit MCU architecture with 500 kHz operating speed
• Integrated I²C and SPI communication interfaces
• Wide operating voltage range from 1.71 V to 5.5 V
• Compact 44-UFQFN exposed pad (5x5 mm) surface-mount package

Applications

• General-purpose embedded control systems requiring serial communication
• Battery-powered devices utilizing low-voltage operation capabilities
• Industrial or automotive modules operating within extended temperature ranges

Part Context

This component belongs to the Cypress Semiconductor product line, which was acquired by Infineon Technologies. While categorized under Infineon's broader portfolio in distributor databases, the specific part number originates from the legacy Cypress MCU family. The device represents an older generation of 32-bit controllers designed for cost-sensitive applications with moderate processing requirements.

Replacement Considerations

The manufacturer lists this specific part number as obsolete. Engineers should consult official replacement guides or select newer members from the PSoC™ 5LP family that maintain pin compatibility and interface specifications.