Infineon CY8C3866LTI-068 8-Bit MCU, TSSOP28 Package for Home Appliances & IoT Sensing

Infineon CY8C3866LTI-068 8-Bit MCU Overview for Compact Home Control & IoT Sensing

The Infineon CY8C3866LTI-068 is a space-efficient, low-power 8-bit microcontroller (MCU) designed for B2B applications demanding compact design, responsive control, 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), 4.2??A typical standby current, TSSOP28 surface-mount package, and -40??C to +85??C operating temperature-to enable slim, reliable operation of space-constrained household and light industrial devices.

With compact 8-bit control + space-saving packaging (tuned for slim home and IoT designs), it balances miniaturization with performance and power efficiency. This makes it ideal for engineers prioritizing PCB space optimization (fitting slim appliances), responsive control (real-time sensor data handling), and battery life extension (powering IoT devices). 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).

Senior engineers at a leading smart coffee maker brand endorse it: ??This 8-bit MCU powers our slim coffee makers. Its TSSOP28 package cut PCB space by 40%, and the 4.2??A standby current extended our IoT water-level sensor battery life by 40%-we now hit 99.94% appliance uptime and 97% client satisfaction.?? For more reliable compact home and IoT microcontrollers, visit IC Manufacturer.

Technical Parameters of Infineon CY8C3866LTI-068

Key Technical Features of CY8C3866LTI-068 8-Bit MCU

• TSSOP28 Space-Saving Package: Reduces PCB size. A home brand noted: ??40% smaller than PDIP28-our smart coffee maker control panel shrank from 80mm2 to 48mm2, letting us launch a ??slim design?? line that grew sales by 28% in 3 months.??
• 48MHz 8-Bit CPU: Ensures real-time responsiveness. An IoT brand shared: ??IoT humidity sensor data update time cut by 27%-from 0.11s to 0.08s, reducing lag complaints by 35% and improving client retention by 22%.??
• 4.2??A Ultra-Low Standby Current: Extends battery life. A smart home brand confirmed: ??Outdoor IoT sensor battery life up by 40%-from 4.5 months to 6.3, cutting field maintenance costs by $120,000 yearly and reducing truck rolls by 33%.??
• 64KB Flash + 4KB RAM: Fits complex compact control code. A home brand said: ??Smart coffee maker brew-cycle code (59KB) fits perfectly-no external memory needed, cutting BOM costs by $0.22 per unit and simplifying supply chain for 500,000 units.??
• 12-Channel 10-Bit ADC (200kSPS): Handles multi-sensor data. An industrial brand explained: ??Entry-level factory temperature sensor monitors 10 points-no external ADC, cutting component count by 26% and assembly time by 9%, which saved $70,000 yearly.??

Advantages of CY8C3866LTI-068 vs. Typical Alternatives

Compared to PDIP28-package 8-bit MCUs (too large for slim designs), high-power 8-bit MCUs (drains IoT batteries), and 32-bit MCUs (overkill for compact home devices), this Infineon MCU solves critical B2B pain points-backed by real customer feedback:

1. Smaller Footprint Than PDIP28-Package 8-Bit MCUs: PDIP28 packages (38.1mm x 7.62mm = 290mm2) take 2.4x more space than TSSOP28 (12.4mm x 6.5mm = 80.6mm2), making them impossible to fit in slim appliances like portable coffee makers. The TSSOP28 design enables miniaturization. A home brand said: ??Our old PDIP28 MCU coffee makers were 50mm thick-this TSSOP28 model is 30mm thick. We launched a ??portable?? line that secured a partnership with a major travel retailer and grew sales by 32%.??

2. Lower Power Than High-Power 8-Bit MCUs: High-power 8-bit MCUs (18mA active current) drain IoT sensor batteries in 4.5 months. The 11mA current extends life to 6.3 months. An IoT brand shared: ??Our old 18mA MCU sensors needed battery changes every 4.5 months-this 11mA model lasts 6.3. We saved $120,000 yearly in field costs and launched a ??long-battery?? sensor line that grew market share by 18%.??

3. More Cost-Effective Than 32-Bit MCUs for Compact Home Devices: 32-bit MCUs cost 50% 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 $1.02 per unit-this 8-bit model costs $0.51. We saved $255,000 yearly on 500,000 units while keeping the same reliable brew-cycle control.??

Typical Applications of Infineon CY8C3866LTI-068

This compact 8-bit MCU excels in space-constrained, cost-sensitive B2B designs-proven in these key use cases:

• Home Appliances (Smart Coffee Makers): TSSOP28 fits slim designs, 48MHz CPU controls brew cycles. A home brand confirmed: ??Coffee maker thickness down by 40%, brew-cycle accuracy hit 99.8%, new portable line grew sales by 32% and secured a travel retailer partnership.??
• Internet of Things (IoT) (Wireless Humidity Sensors): 4.2??A standby extends battery, 48MHz CPU speeds data updates. An IoT brand reported: ??Sensor battery life up by 40%, data lag complaints cut by 35%, we added 3 smart home platform clients and grew revenue by $310,000.??
• Industrial Automation (Entry-Level Factory Sensors): Wide temp range resists factory conditions, 12-channel ADC monitors data. An industrial brand shared: ??Factory temperature sensor failure rate down by 23%, maintenance costs saved $70,000 yearly, we secured a contract with a small electronics manufacturer.??
• Home Appliances (Slim Kitchen Thermometers): TSSOP28 saves space, 10-bit ADC ensures accuracy. A home brand noted: ??Thermometer thickness cut by 35%, error rate down by 18%, we gained shelf space in 4 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 40%, we integrated with 4 smart home ecosystems, sales rose by 29% in 6 months and reduced warranty claims by 21%.??

Frequently Asked Questions (FAQ) About Infineon CY8C3866LTI-068

Why is TSSOP28 package better than PDIP28 for slim smart coffee makers?

Slim coffee makers need control panels under 50mm2-PDIP28 (290mm2) is too large, while TSSOP28 (80.6mm2) fits easily. A home engineer said: ??Our PDIP28 coffee makers were 50mm thick-this TSSOP28 model is 30mm. We launched a portable line that grew sales by 32% and partnered with a major travel retailer.??

How does 48MHz CPU speed improve IoT humidity sensor performance?

IoT humidity sensors need fast data updates to reflect real-time changes-32MHz CPUs take 0.11s, while 48MHz cuts it to 0.08s. An IoT engineer said: ??Our 32MHz sensors had 35% lag complaints-this 48MHz model fixed that. We added 3 smart home clients, grew revenue by $310,000, and improved client retention by 22%.??

What value does 4.2??A standby current add for outdoor IoT sensors?

Outdoor IoT sensors run on batteries-5.8??A standby (old 8-bit MCUs) drains them in 4.5 months, while 4.2??A extends life to 6.3 months. An IoT engineer said: ??Our old 5.8??A sensors needed quarterly changes-this 4.2??A model lasts 6.3. We saved $120,000 yearly and launched a ??long-battery?? line that grew market share by 18%.??

Why is an 8-bit MCU more cost-effective than a 32-bit MCU for smart coffee makers?

Smart coffee makers only need basic brew-cycle control-32-bit MCUs cost 50% more but offer no extra features. The 8-bit model cuts BOM costs. A home engineer said: ??Our 32-bit MCU coffee makers cost $1.02-this 8-bit model costs $0.51. We saved $255,000 yearly on 500,000 units while keeping reliable brew control.??

How does -40??C to +85??C temperature range benefit smart coffee makers?

Coffee makers generate heat (up to 80??C) and may be stored in cold garages (-10??C)-narrow-range MCUs (0??C?C70??C) fail 17% of the time. The wide range ensures reliability. A home engineer said: ??Our old 0??C?C70??C MCU coffee makers failed 17% in hot use-this model fails 2%. Warranty costs dropped by $85,000 yearly, and we retained 96% of our retail clients.??