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CY8C3866FNI-210T

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CY8C3866FNI-210T

IC MCU 8BIT 64KB FLASH 72WLCSP

Manufacturer: Infineon Technologies

Categories: Microcontrollers

Quality Control: Learn More

Infineon Technologies PSOC® 3 CY8C38xx MCU CY8C3866FNI-210T is an 8-bit microcontroller based on the 8051 core, operating at up to 67MHz. This device features 64KB of FLASH program memory and 8KB of RAM, coupled with 2KB of EEPROM. Connectivity options include CANbus, EBI/EMI, I2C, LINbus, SPI, UART/USART, and USB. It is equipped with integrated peripherals such as CapSense, DMA, LCD, POR, PWM, and WDT. The CY8C3866FNI-210T includes analog capabilities with 16x20-bit ADCs and 4x8-bit DACs. With 62 I/O pins and a 72-WLCSP (4.3x5) package, it is suitable for surface mount applications. The operating voltage range is 1.71V to 5.5V, with an operational temperature range of -40°C to 85°C. This component finds application in automotive, industrial, and consumer electronics sectors. It is supplied in Tape & Reel packaging.

Additional Information

Series: PSOC® 3 CY8C38xxRoHS Status: ROHS3 CompliantManufacturer Lead Time: 10 week(s)Product Status: ActivePackaging: Tape & Reel (TR)Datasheet:
Technical Details:
PackagingTape & Reel (TR)
Package / Case72-UFBGA, WLCSP
Mounting TypeSurface Mount
Speed67MHz
Program Memory Size64KB (64K x 8)
RAM Size8K x 8
Operating Temperature-40°C ~ 85°C (TA)
Oscillator TypeInternal
Program Memory TypeFLASH
EEPROM Size2K x 8
Core Processor8051
Data ConvertersA/D 16x20b; D/A 4x8b
Core Size8-Bit
Voltage - Supply (Vcc/Vdd)1.71V ~ 5.5V
ConnectivityCANbus, EBI/EMI, I2C, LINbus, SPI, UART/USART, USB
PeripheralsCapSense, DMA, LCD, POR, PWM, WDT
Supplier Device Package72-WLCSP (4.3x5)
Number of I/O62
ProgrammableNot Verified

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Infineon Technologies FAQs

Infineon Technologies manufactures a wide range of semiconductor components with a strong emphasis on power electronics, automotive systems, and security solutions.

Infineon’s core components include:

  • Power semiconductors (MOSFETs, IGBTs, SiC and GaN devices)
  • Microcontrollers (MCUs) for automotive and industrial applications
  • Analog and mixed-signal ICs
  • Sensors (including radar and environmental sensors)
  • Security and authentication ICs
  • Automotive semiconductors (powertrain, ADAS, and safety systems)
  • Wireless and connectivity solutions (Bluetooth, Wi-Fi, and RF)

Infineon specializes in energy-efficient power management, secure connectivity, and high-reliability automotive solutions.

Infineon serves industries that require power efficiency, system safety, and secure connectivity.

Infineon’s key industries include:

  • Automotive and electric vehicles (EVs)
  • Industrial automation and motor control
  • Renewable energy and power infrastructure
  • Consumer electronics and home appliances
  • Internet of Things (IoT) and smart devices
  • Security and identification (payments, access control)

These industries rely on Infineon for power efficiency, system protection, and secure semiconductor solutions.

Infineon is known for power semiconductor technologies, automotive microcontrollers, and security solutions.

Key Infineon product lines include:

  • AURIX - automotive microcontrollers for safety-critical applications
  • XMC - ARM-based microcontrollers for industrial applications
  • PSoC - programmable system-on-chip solutions (via Cypress acquisition)
  • CoolMOS - high-voltage power MOSFETs
  • OptiMOS - low-voltage power MOSFETs
  • CoolSiC - silicon carbide power devices for high-efficiency systems
  • EiceDRIVER - gate driver ICs for power semiconductors
  • OPTIGA - security solutions for authentication and IoT security
Microcontroller FAQs

A microcontroller is a compact integrated circuit that combines a processor, memory, and input/output peripherals for embedded control applications.

Microcontrollers execute programmed instructions to process sensor inputs and control outputs such as motors, displays, and communication interfaces.

Microcontrollers are commonly used in:

  • Automotive systems
  • Robotics
  • IoT devices
  • Industrial automation
  • Household appliances
  • Smart electronics

Microcontrollers integrate memory and peripherals on-chip for dedicated tasks, while microprocessors are designed for higher-performance computing systems requiring external components.

Frequently Asked Questions

As a full line supplier, we specialize in sourcing obsolete and hard to find electronic components for your projects.

After we receive your request submission, one of our account executives will reach out to your team to gather more information about your project requirements and ensure we tailor the order to your needs.

Once requirements such as date codes, quantities, target prices, testing requirements, and more are discussed, our purchasing team will secure stock through Microchip USA’s direct access to manufacturing partners’ excess inventory lists.

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Our net terms for electronic component sourcing are flexible and vary by order. Our account executives will work with you to ensure our terms meet your company’s needs. We also offer scheduled shipments and inventory management solutions to ensure a steady supply of electronic components, maintain cash flow, and maximize warranty periods. We always offer a warranty on all tested parts. See our sales terms and conditions for more information.

We partner with industry-leading AS6171 & AS6081-certified third party testing labs to mitigate risk and support a wide array of end uses for your company’s requirements. Testing includes but isn’t limited to: Decapsulation & Internal Dye Verification. X-Ray Inspection & Analysis, External Visual Inspection, Surface Texture Analysis (SEM), and Electrical Pin Correlation.