Infineon CY8C3866AXI-040 8-Bit MCU Overview for Compact Home & IoT Control
The Infineon CY8C3866AXI-040 is a space-efficient, low-power 8-bit microcontroller (MCU) designed for B2B applications demanding balanced performance, miniaturization, and energy efficiency-targeted at Home Appliances (smart coffee makers, slim kitchen thermometers, portable blenders), Internet of Things (IoT) (wireless humidity sensors, small smart home nodes), and Industrial Automation (entry-level factory monitoring devices). It integrates critical features: 48MHz CPU clock speed, 64KB flash memory, 4KB RAM, essential analog/digital peripherals (UART, SPI, I2C, 10-bit ADC), 3.9??A typical standby current, QFP40 (Quad Flat Package, 40-pin) surface-mount package, and -40??C to +85??C operating temperature-to enable reliable, compact operation of space-constrained household and light industrial devices.
With compact 8-bit control + low-power design (tuned for home and IoT use cases), it balances functionality with power efficiency and PCB space savings. This makes it ideal for engineers prioritizing miniaturization (fitting slim appliances), real-time responsiveness (handling sensor data), and battery life extension (powering wireless IoT nodes). As part of Infineon??s PSoC 3 series-a lineup trusted by 150,000+ developers in home appliance and IoT sectors-it meets strict quality benchmarks: RoHS 2 compliance, ISO 9001 certification, IEC 61000-6-3 EMC compliance (home/IoT environments), and 6,000+ hours of reliability testing (peripheral stability, long-term power efficiency, temperature resilience).
🔥 المنتجات الأكثر مبيعًا
Senior engineers at a leading smart home appliance brand endorse it: ??This 8-bit MCU powers our slim coffee makers. Its QFP40 package cut PCB space by 25%, and the 3.9??A standby current extended our IoT water-level sensor battery life by 35%-we now hit 99.92% appliance uptime and 96% client satisfaction.?? For more reliable compact home and IoT microcontrollers, visit الشركة المصنعة للدوائر المتكاملة.
Technical Parameters of Infineon CY8C3866AXI-040
| المعلمة | المواصفات |
|---|---|
| الوظيفة | 8-bit MCU for compact home control, IoT sensing, and entry-level industrial monitoring |
| CPU Core | 8-bit proprietary core (optimized for low-power, real-time control) |
| CPU Clock Speed | Up to 48MHz |
| الذاكرة | 64KB flash memory (program storage), 4KB RAM (data handling) |
| نطاق جهد الإمداد | 2.7V to 5.5V DC (compatible with 3.3V IoT and 5V home/industrial systems) |
| Standby Current (Typ) | 3.9??A (at 3.3V supply, RAM retention mode, 25??C) |
| Active Current (Typ) | 10mA (at 3.3V supply, 48MHz clock speed, full peripheral use) |
| الأجهزة الطرفية المدمجة | Digital: 3x UART, 2x SPI, 2x I2C, 28x GPIO pins; Analog: 10-bit ADC (10 channels, 150kSPS), 2x comparators |
| نطاق درجة حرارة التشغيل | -40??C to +85??C (home/industrial temperature grade) |
| نوع الحزمة | QFP40 (40-pin Quad Flat Package), 10mm x 10mm x 1.2mm dimensions (surface-mount, 0.8mm pin spacing) |
| الامتثال | RoHS 2 compliant, ISO 9001 certified, IEC 61000-6-3 |
Key Technical Features of CY8C3866AXI-040 8-Bit MCU
- 48MHz 8-Bit CPU: Delivers real-time responsiveness. An IoT brand noted: ??Wireless humidity sensor data update time cut by 25%-from 0.12s to 0.09s, reducing lag complaints by 30% and improving client retention by 18%.??
- QFP40 Space-Saving Package: Reduces PCB size. A home appliance brand shared: ??Our old DIP40 MCU coffee makers needed 120mm2 PCB area-this QFP40 model uses 90mm2. We launched a ??slim?? line that secured shelf space in 5 major kitchen retailers.??
- 3.9??A Ultra-Low Standby Current: Extends battery life. An IoT brand confirmed: ??Outdoor IoT sensor battery life up by 35%-from 5 months to 6.75, cutting field maintenance costs by $100,000 yearly and reducing truck rolls by 28%.??
- 64KB Flash + 4KB RAM: Fits complex compact control code. A home brand said: ??Smart blender speed-control code (60KB) fits perfectly-no external memory needed, cutting BOM costs by $0.20 per unit and simplifying supply chain for 400,000 units.??
- 10-Channel 10-Bit ADC (150kSPS): Handles multi-sensor data. An industrial brand explained: ??Entry-level factory temperature sensor monitors 8 points-no external ADC, cutting component count by 24% and assembly time by 8%, which saved $60,000 yearly.??
Advantages of CY8C3866AXI-040 vs. Typical Alternatives
Compared to DIP40-package 8-bit MCUs (too large for slim designs), high-power 8-bit MCUs (drains IoT batteries), and 32-bit MCUs (overkill for home devices), this Infineon MCU solves critical B2B pain points-backed by real customer feedback:
🌟 المنتجات المميزة
1. Smaller Footprint Than DIP40-Package 8-Bit MCUs: DIP40 packages (50.8mm x 7.62mm = 387mm2) take 4.3x more space than QFP40 (10mm x 10mm = 100mm2), making them impossible to fit in slim appliances like portable coffee makers. The QFP40 design enables miniaturization. A home brand said: ??Our old DIP40 MCU coffee makers were 45mm thick-this QFP40 model is 28mm thick. We launched a ??portable?? line that grew sales by 29% in 3 months.??
2. Lower Power Than High-Power 8-Bit MCUs: High-power 8-bit MCUs (16mA active current) drain IoT sensor batteries in 5 months. The 10mA current extends life to 6.75 months. An IoT brand shared: ??Our old 16mA MCU sensors needed battery changes every 5 months-this 10mA model lasts 6.75. We saved $100,000 yearly in field costs and launched a ??long-battery?? sensor line that grew market share by 15%.??
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3. More Cost-Effective Than 32-Bit MCUs for Home Devices: 32-bit MCUs cost 45% more than this 8-bit model but offer no extra value for smart coffee makers or slim thermometers. The 8-bit design cuts BOM expenses. A home brand confirmed: ??Our old 32-bit MCU coffee makers cost $0.98 per unit-this 8-bit model costs $0.49. We saved $196,000 yearly on 400,000 units while keeping the same reliable brew-cycle control.??
Typical Applications of Infineon CY8C3866AXI-040
This compact 8-bit MCU excels in space-constrained, cost-sensitive B2B designs-proven in these key use cases:
- Home Appliances (Smart Coffee Makers): QFP40 fits slim designs, 48MHz CPU controls brew cycles. A home brand confirmed: ??Coffee maker thickness down by 38%, brew-cycle accuracy hit 99.7%, new portable line secured a partnership with a major travel retailer.??
- Internet of Things (IoT) (Wireless Humidity Sensors): 3.9??A standby extends battery, 48MHz CPU speeds data updates. An IoT brand reported: ??Sensor battery life up by 35%, data lag complaints cut by 30%, we added 4 smart home platform clients and grew revenue by $280,000.??
- Industrial Automation (Entry-Level Factory Sensors): Wide temp range resists factory conditions, 10-bit ADC monitors data. An industrial brand shared: ??Factory temperature sensor failure rate down by 21%, maintenance costs saved $60,000 yearly, we secured a contract with a small electronics manufacturer.??
- Home Appliances (Slim Kitchen Thermometers): QFP40 saves space, 10-bit ADC ensures accuracy. A home brand noted: ??Thermometer thickness cut by 32%, error rate down by 16%, we gained shelf space in 3 major kitchen supply stores and expanded to 2 new regional markets.??
- Internet of Things (IoT) (Small Smart Home Nodes): Low power fits battery operation, multiple UART ports support connectivity. An IoT brand confirmed: ??Node battery life extended by 35%, we integrated with 3 smart home ecosystems, sales rose by 26% in 6 months and reduced warranty claims by 19%.??
Frequently Asked Questions (FAQ) About Infineon CY8C3866AXI-040
Why is QFP40 package better than DIP40 for slim smart coffee makers?
Slim coffee makers need control panels under 100mm2-DIP40 (387mm2) is too large, while QFP40 (100mm2) fits easily. The QFP40 design enables miniaturization. A home engineer said: ??Our old DIP40 MCU coffee makers were 45mm thick-this QFP40 model is 28mm thick. We launched a ??portable?? line that grew sales by 29% and secured a partnership with a travel retailer.??
How does 48MHz CPU speed improve IoT humidity sensor performance?
IoT humidity sensors need fast data updates to reflect real-time environmental changes-32MHz CPUs take 0.12s to update, while 48MHz cuts it to 0.09s. The faster speed reduces lag. An IoT engineer said: ??Our old 32MHz MCU sensors had 30% lag complaints-this 48MHz model cut complaints by 30%. We improved client retention by 18% and added 4 new smart home platform clients.??
What value does 3.9??A standby current add for outdoor IoT sensors?
Outdoor IoT sensors run on batteries and spend 90% of time in standby-high standby current (6.0??A) drains batteries in 5 months. 3.9??A extends life to 6.75 months. An IoT engineer said: ??Our old 6.0??A sensors needed battery changes every 5 months-this 3.9??A model lasts 6.75. We saved $100,000 yearly in field costs and launched a ??long-battery?? line that grew market share by 15%.??
Why is an 8-bit MCU more cost-effective than a 32-bit MCU for smart blenders?
Smart blenders only need basic speed-control code (60KB)-32-bit MCUs cost 45% more than 8-bit models but offer no extra value. The 8-bit design cuts BOM expenses. A home engineer said: ??Our old 32-bit MCU blenders cost $0.98 per unit-this 8-bit model costs $0.49. We saved $196,000 yearly on 400,000 units while keeping the same reliable speed control.??
How does -40??C to +85??C temperature range benefit kitchen appliances?
Kitchen appliances like coffee makers reach +80??C during use and may be stored in -10??C garages-narrow-range MCUs (0??C?C70??C) fail 15% of the time. The wide range ensures reliability. A home engineer said: ??Our old 0??C?C70??C MCU coffee makers failed 15% in hot use-this model fails 2%. Warranty costs dropped by $75,000 yearly, and we retained 95% of our retail clients.??