Infineon CY8C3446LTI-073 8-Bit MCU, TQFP48 Package for IoT & Home Appliance Sensing

Infineon CY8C3446LTI-073 8-Bit MCU Overview for Low-Power IoT & Home Appliance Control

The Infineon CY8C3446LTI-073 is a cost-efficient, low-power 8-bit microcontroller (MCU) designed for B2B applications that demand basic sensor control, easy manufacturing, and long battery life-targeted at Internet of Things (IoT) (battery-powered humidity sensors, smart buttons), Home Appliances (small kitchen gadgets, portable thermometers), and Industrial Automation (entry-level factory sensing nodes). It integrates critical features: 24MHz CPU clock speed, 16KB flash memory, 1KB RAM, essential analog/digital peripherals (UART, SPI, I2C, 10-bit ADC), 4.0??A typical standby current, TQFP48 surface-mount package, and -40??C to +85??C operating temperature-to enable reliable, energy-saving control of compact, battery-dependent devices.

With low-power 8-bit control + easy-assemble packaging (tuned for IoT and home needs), it balances affordability with manufacturing flexibility and minimal energy use. This makes it ideal for engineers prioritizing power efficiency (extending battery life for wireless IoT sensors), assembly simplicity (reducing soldering errors in small-batch production), and cost optimization (cutting BOM expenses for high-volume home gadgets). As part of Infineon??s PSoC 3 series-a lineup trusted by 160,000+ developers in low-power embedded and home appliance sectors-it meets strict quality benchmarks: RoHS 2 compliance, ISO 9001 certification, IEC 61000-6-3 EMC compliance (consumer/IoT environments), and 5,800+ hours of reliability testing (peripheral stability, long-term power efficiency, temperature resilience).

Senior engineers at a leading IoT sensor brand endorse it: ??This 8-bit MCU powers our wireless humidity sensors. It cut standby power use by 35% (extending battery life to 6 months) and the TQFP48 package reduced soldering rework by 22%. We now hit 99.90% sensor uptime and 94% client satisfaction.?? For more reliable low-power IoT and home appliance microcontrollers, visit IC Manufacturer.

Technical Parameters of Infineon CY8C3446LTI-073

Key Technical Features of CY8C3446LTI-073 8-Bit MCU

• 4.0??A Ultra-Low Standby Current: Extends battery life. An IoT brand noted: ??Wireless humidity sensor standby power cut by 35%-battery life extended from 4.5 months to 6, reducing field maintenance costs by $120,000 yearly and cutting truck rolls by 28%.??
• 24MHz 8-Bit CPU: Ensures steady data processing. A home brand shared: ??Portable kitchen thermometer response time cut by 18%-we now get accurate temperature reads in 0.09s (down from 0.11s), reducing customer complaints by 24%.??
• TQFP48 Easy-Solder Package: Reduces manufacturing rework. An industrial brand confirmed: ??20% easier soldering vs. QFN48-soldering error rate dropped from 17% to 13%, saving $45,000 yearly on rework and boosting production throughput by 9%.??
• 16KB Flash + 1KB RAM: Fits compact control code. A home brand said: ??Small blender speed-control code (14KB) fits perfectly-no external memory needed, cutting BOM costs by $0.18 per unit and simplifying supply chain management.??
• 6-Channel 10-Bit ADC (100kSPS): Handles basic sensor data. An IoT brand explained: ??Outdoor temperature sensor monitors 5 points-no external ADC, cutting component count by 23% and design time by 8%, which saved $50,000 yearly.??

Advantages of CY8C3446LTI-073 vs. Typical Alternatives

Compared to 32-bit MCUs (overkill for basic sensing), high-power 8-bit MCUs, and QFN48-package 8-bit MCUs, the CY8C3446LTI-073 solves critical B2B pain points-backed by real customer feedback:

1. Lower Cost Than 32-Bit MCUs for Basic IoT Sensing: 32-bit MCUs cost 36% more than this 8-bit model but offer no extra value for humidity sensors or small blenders. The 8-bit design cuts BOM expenses. A home brand said: ??Our old 32-bit MCU blenders cost $0.85 per unit-this 8-bit model costs $0.54. We saved $155,000 yearly on 500,000 units while keeping the same reliable speed control.??

2. Lower Power Than High-Power 8-Bit MCUs: High-power 8-bit MCUs (6.2??A standby current) drain IoT sensor batteries in 4.5 months. The 4.0??A current extends life to 6 months. An IoT brand shared: ??Our old 6.2??A MCU sensors needed battery changes every 4.5 months-this 4.0??A model lasts 6. We saved $120,000 yearly in field costs and launched a ??long-battery?? sensor line that grew sales by 21%.??

3. Easier Manufacturing Than QFN48-Package 8-Bit MCUs: QFN48 packages require precision soldering (error rate 17%) and specialized tools, while TQFP48 works with standard equipment (error rate 13%). A home brand confirmed: ??Our old QFN48 MCU thermometers had 17% soldering errors-this TQFP48 model has 13%. We saved $45,000 on rework, and production teams reported 15% less time spent on defect fixes.??

Typical Applications of Infineon CY8C3446LTI-073

This low-power, easy-to-assemble 8-bit MCU excels in compact, battery-dependent B2B designs-proven in these key use cases:

• Internet of Things (IoT) (Wireless Humidity Sensors): 4.0??A standby extends battery, 24MHz CPU ensures steady data. An IoT brand confirmed: ??Sensor battery life up by 33%, maintenance costs reduced by $120,000 yearly, client retention hit 94%.??
• Home Appliances (Portable Kitchen Thermometers): TQFP48 eases assembly, 10-bit ADC ensures accuracy. A home brand reported: ??Thermometer error rate down by 24%, soldering rework cut by 22%, sales grew by 21% in kitchen supply retail channels.??
• Industrial Automation (Entry-Level Factory Sensors): Wide temp range resists workshop conditions, low power fits battery use. An industrial brand shared: ??Sensor failure rate down by 18%, factory energy use cut by 7%, we secured a contract with a small-scale manufacturing plant.??
• Internet of Things (IoT) (Smart Buttons): Low standby extends coin-cell life, compact package fits tiny cases. An IoT brand noted: ??Button battery life up from 3 to 4.2 months, BOM costs cut by $0.18, we added 3 new IoT ecosystem partners.??
• Home Appliances (Small Blenders): 16KB flash fits speed code, GPIO pins handle controls. A home brand confirmed: ??Blender speed-control errors down by 20%, BOM parts reduced by 23%, we launched a ??budget-friendly?? blender line that captured 10% more market share.??

Frequently Asked Questions (FAQ) About Infineon CY8C3446LTI-073

Why is an 8-bit MCU better than a 32-bit MCU for wireless humidity sensors?

Wireless humidity sensors only need basic data collection and transmission-32-bit MCUs cost 36% more but offer no extra performance. The 8-bit model cuts costs while maintaining reliability. An IoT engineer said: ??Our 32-bit MCU sensors cost $0.85-this 8-bit model costs $0.54. We saved $155,000 yearly and kept the same 6-month battery life that clients value.??

How does 4.0??A standby current extend IoT sensor battery life?

IoT sensors spend 93% of time in standby-high standby current (6.2??A) drains 3.7V coin-cell batteries in 4.5 months. 4.0??A extends life to 6 months. An IoT engineer said: ??Our old 6.2??A sensors needed quarterly battery changes-this 4.0??A model lasts 6 months. We cut field labor costs by $120,000 yearly and had 21% more customers choose our ??low-maintenance?? sensors.??

What value does TQFP48 package add for small-batch home appliance production?

Small-batch production often uses standard soldering tools-QFN48 packages need expensive precision equipment (error rate 17%), while TQFP48 works with standard gear (error rate 13%). A home engineer said: ??QFN48 rework cost $45,000 yearly-TQFP48 eliminated that. We also cut assembly time by 9%, letting us fulfill small orders 3 days faster and win 12% more custom kitchen gadget projects.??

How does 24MHz CPU improve portable kitchen thermometer performance?

Portable thermometers need fast, accurate reads to avoid undercooking/overcooking-12MHz 8-bit MCUs take 0.11s for a reading, while 24MHz cuts it to 0.09s. A home engineer said: ??Our old 12MHz thermometer had 24% more accuracy complaints-this 24MHz model fixed that. Customer satisfaction rose by 26%, and we gained shelf space in 5 major kitchen supply stores.??

Why is -40??C to +85??C temperature range suitable for outdoor IoT sensors?

Outdoor IoT sensors face -30??C winters and +75??C summers-narrow-range MCUs (0??C?C70??C) fail 19% of the time, causing data gaps. The wide range ensures year-round reliability. An IoT engineer said: ??Our old 0??C?C70??C sensors failed 19% in winter-this model works. Warranty costs dropped by $80,000 yearly, and we secured a smart agriculture client for 10,000 outdoor moisture sensors.??