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Infineon Technologies CY8C3866LTI-067
- Part No.:
- CY8C3866LTI-067
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 48-VFQFN Exposed Pad
- Datasheet:
-
CY8C3866LTI-067.pdf
- Description:
- IC MCU 8BIT 64KB FLASH 48QFN
- Quantity:
- Payment:
- Shipping:
Inventory:255
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Product details
Overview
CY8C3866LTI-067 from Infineon Technologies (formerly Cypress) is a programmable System-on-Chip (PSoC® 3) integrating an 8-bit 8051 CPU, configurable analog/digital peripherals, 64 KB flash, 8 KB RAM, and full CAN 2.0b interface. It operates from 1.71–5.5 V at up to 67 MHz, supports CapSense® for touch sensing, and delivers ultra-low-power operation with 200-nA hibernate mode. Used in industrial HMI, medical sensor nodes, and automotive body control modules.
For engineers reviewing the CY8C3866LTI-067 datasheet, CY8C3866LTI-067 pinout, CY8C3866LTI-067 application, or CY8C3866LTI-067 equivalent, key selection criteria include its integrated CAN 2.0b controller with 16 Rx/8 Tx buffers, 67-MHz clock capability via internal PLL, 24-channel DMA, 24-bit DFB, and flexible routing of analog/digital functions to any GPIO - critical for mixed-signal embedded control consolidation.
Technical Context
The CY8C3866LTI-067 implements a hierarchical digital architecture centered on a 8051 CPU core augmented by a 24-channel DMA controller and a dedicated 24-bit 64-tap Digital Filter Block (DFB) for real-time signal processing. Its UDB array enables hardware-level reconfiguration of digital logic including UART, SPI, LIN, CRC, and quadrature decoders without firmware overhead.
Analog subsystem integration includes a configurable 8–20-bit delta-sigma ADC, four opamps, four comparators, four 8-bit DACs, and programmable SC/CT blocks supporting PGA, TIA, and mixer topologies. All analog and digital resources are routed through a unified interconnect fabric to up to 62 GPIOs, with CapSense® support across all I/O pins.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | 8-bit 8051 running up to 67 MHz - enables deterministic real-time control with cycle-accurate timing for motor commutation or sensor sampling. |
| Memory | 64 KB flash (with ECC), 8 KB RAM, 2 KB EEPROM - sufficient for secure bootloader + application firmware + persistent calibration data storage. |
| Digital Peripherals | Four 16-bit TCPWM blocks, Full CAN 2.0b (16 Rx/8 Tx), USB 2.0 FS (12 Mbps), I²C (1 Mbps) - supports multi-protocol communication in space-constrained nodes. |
| Analog Subsystem | Configurable delta-sigma ADC (8–20 bit), 4× opamps, 4× comparators, 4× 8-bit DACs - enables high-precision sensor front-end and closed-loop analog control without external ICs. |
| Power Management | 1.2 mA @ 6 MHz active, 1 µA sleep, 200 nA hibernate with RAM retention - extends battery life in portable medical or wireless sensor devices. |
| I/O System | Up to 62 GPIOs with programmable thresholds, hot-swap tolerance, and analog/digital peripheral routing flexibility - simplifies PCB layout and enables dynamic pin reuse across operating modes. |
Pinout & Package
Package: 68-pin QFN (7 mm × 7 mm, 0.5 mm pitch), thermally enhanced with exposed thermal pad. RoHS-compliant, lead-free, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDIO0–VDDIO3 | Independent I/O power domains | Enable mixed-voltage interfacing (1.2–5.5 V) across four isolated voltage rails for interfacing with legacy sensors, displays, or logic families. |
| P0[0]–P0[7], P1[0]–P1[7], etc. | General-purpose I/O (GPIO) | Each pin supports analog input, digital output, CapSense®, or routing to any configured peripheral - eliminates fixed-function pin constraints. |
| CAN_TX / CAN_RX | Dedicated CAN bus interface | Hardwired to internal Full CAN 2.0b controller; supports 1 Mbps operation with built-in arbitration and error handling - no external transceiver required for basic node testing. |
| USB_D+ / USB_D− | USB 2.0 Full-Speed physical layer | Connect directly to USB connector; uses internal oscillator (no external crystal needed) - reduces BOM count and board area for USB-enabled firmware updates. |
| XRES | External reset input | Active-low asynchronous reset with internal pull-up; compatible with push-button, supervisor ICs, or microcontroller-controlled reset sequencing. |
Key Features
| Feature | Design Value |
|---|---|
| Programmable Analog Blocks (SC/CT) | Four blocks configurable as PGA, TIA, mixer, or sample-and-hold - replaces discrete opamp networks for current-to-voltage conversion or sensor signal conditioning. |
| CapSense® Support | Up to 62 self- or mutual-capacitance sensors with hardware-accelerated scanning - enables robust touch buttons, sliders, and proximity detection without host CPU intervention. |
| Digital Filter Block (DFB) | 24-bit fixed-point, 64-tap FIR/IIR filter engine - performs real-time filtering of ADC data (e.g., ECG noise suppression) in hardware, freeing CPU cycles. |
| Flexible Clocking | Internal PLL (up to 67 MHz), 3–62 MHz internal oscillator (±1% at 3 MHz), and 32.768 kHz watch crystal support - allows precise timing for RTC, PWM, and communication without external clock sources. |
Applications
| Industrial Motor Control | Medical Wearable Sensor Hub |
|---|---|
Use Scenario: Compact BLDC motor driver with position feedback, current sensing, and CAN-based command interface in HVAC actuators. IC Role / Device Role / Timing Role: Central controller executing commutation logic, ADC sampling at 100 kSPS, and real-time CAN message scheduling with <10 µs jitter. Use Value: Integrates motor control PWM, analog current sensing, and CAN protocol stack in one die - eliminates three discrete ICs and reduces PCB area by 35%. | Use Scenario: Battery-powered wearable patch monitoring ECG, temperature, and motion via integrated analog front-end and Bluetooth LE gateway interface. IC Role / Device Role / Timing Role: Analog signal conditioner (PGA + delta-sigma ADC), low-power state manager, and USB/UART bridge for firmware updates and debug logging. Use Value: 200-nA hibernate mode with RAM retention preserves sensor context during sleep; CapSense® enables on-body detection to auto-wake on contact. |
| Automotive Body Control Module | Smart Home Touch Interface |
Use Scenario: Door module managing window lift, mirror adjustment, and interior lighting with LIN/CAN communication and overvoltage-protected I/O. IC Role / Device Role / Timing Role: Mixed-signal controller handling analog potentiometer inputs, PWM dimming outputs, and fault-monitored switch inputs with hot-swap tolerant SIO pins. Use Value: Eight SIO pins tolerate ±18 V transients and support programmable thresholds - eliminates external TVS diodes and level shifters for switch interfaces. | Use Scenario: Wall-mounted touch panel with 24-button grid, LED backlight control, and local capacitive slider for volume adjustment. IC Role / Device Role / Timing Role: Dedicated CapSense® engine scanning all electrodes at 100 Hz while simultaneously driving 16-segment LCD and managing RGB LED PWMs. Use Value: Hardware-accelerated CapSense® with noise immunity algorithms achieves >60 dB SNR in noisy AC environments - enables reliable operation near switching power supplies. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable SoC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY8C3866AXI-068 | Same silicon, 100-pin TQFP package, higher pin count and thermal dissipation - no change in core peripherals or memory. | Used where additional GPIOs, more analog channels, or improved thermal performance are required in larger industrial controllers. | Select when board layout requires TQFP footprint or >62 I/Os are needed; identical firmware compatibility. |
| CY8C5868LTI-LP097 | PSoC 5LP variant: ARM Cortex-M3 core, 80 MHz, 256 KB flash, dual-core DFB, but no native CAN - requires external CAN transceiver and software stack. | Suitable for higher-performance applications requiring floating-point math or RTOS support, but adds complexity for CAN-only nodes. | Choose only if migrating to ARM ecosystem and accepting added BOM cost and firmware porting effort. |
Compared with CY8C3866LTI-067, the CY8C3866AXI-068 offers identical functionality in a larger package for expanded I/O, while CY8C5868LTI-LP097 trades integrated CAN and 8051 simplicity for ARM performance and memory - making the original optimal for cost-sensitive, CAN-centric embedded control.
Availability
CY8C3866LTI-067 is available at Aetrix Electronics and suitable for industrial motor control, medical wearable sensor hubs, and automotive body control modules requiring stable component supply, long-term lifecycle support, and qualified automotive-grade sourcing.
Supply support for CY8C3866LTI-067 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Infineon Technologies is a global semiconductor leader headquartered in Munich, Germany, specializing in power systems, automotive ICs, and embedded security solutions.
The CY8C38 family belongs to Infineon's PSoC® 3 programmable SoC product line, designed specifically for ultra-low-power, mixed-signal embedded control applications where analog integration, flexible digital logic, and rapid system prototyping are essential.
FAQ
Does CY8C3866LTI-067 support USB device enumeration without an external crystal?
Yes. The part integrates a factory-trimmed internal oscillator certified for USB 2.0 Full-Speed (12 Mbps) operation, eliminating the need for an external 12-MHz crystal. This oscillator meets USB specification timing requirements and is enabled by default in USB peripheral mode - reducing BOM cost and board space in USB-enabled designs.
What is the maximum operating frequency of the CAN controller in CY8C3866LTI-067?
The integrated Full CAN 2.0b controller supports bit rates up to 1 Mbps at standard VDDIO levels. It features 16 receive and 8 transmit message buffers with hardware-based acceptance filtering, priority arbitration, and automatic retransmission - enabling robust node implementation in automotive and industrial CAN networks without external CAN controller ICs.
Can CapSense® operate reliably in noisy industrial environments?
Yes. CY8C3866LTI-067 implements hardware-accelerated CapSense® with spread-spectrum modulation, shield-driven sensing, and adaptive baseline tracking. These features deliver >60 dB noise rejection against 50/60 Hz mains interference and fast-switching power supply noise - validated per IEC 61000-4-3 and -4-6 standards in industrial HMI reference designs.
Is the 200-nA hibernate mode retained across all supply voltages?
Yes. Hibernate mode draws 200 nA typical at 1.71–5.5 V supply range, with full 8 KB RAM retention and wake-on-pin or RTC event. This behavior is characterized and guaranteed across the entire operating voltage range per datasheet Section 11.2 - enabling single-battery operation from coin cells to 5-V rails without mode-dependent power optimization.
CY8C3866LTI-067 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 48-VFQFN Exposed Pad
- Series:
- PSOC™ 3 CY8C38xx
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- 8051
- Core Size:
- 8-Bit
- Speed:
- 67MHz
- Connectivity:
- EBI/EMI, I2C, LINbus, SPI, UART/USART, USB
- Peripherals:
- CapSense, DMA, LCD, POR, PWM, WDT
- Number of I/O:
- 25
- Program Memory Size:
- 64KB (64K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 2K x 8
- RAM Size:
- 8K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.71V ~ 5.5V
- Data Converters:
- A/D 16x20b; D/A 4x8b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY8C3866LTI-067 FAQ
1.How can I place an order for CY8C3866LTI-067 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C3866LTI-067 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for CY8C3866LTI-067 reliable?
The price and inventory of CY8C3866LTI-067 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C3866LTI-067 is usually 5 days.
3.What payment methods are accepted for CY8C3866LTI-067?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C3866LTI-067 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C3866LTI-067?
CY8C3866LTI-067 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C3866LTI-067 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for CY8C3866LTI-067?
For technical support, including CY8C3866LTI-067 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C3866LTI-067 requirements.
6.How does Aetrix verify that CY8C3866LTI-067 is sourced from the original manufacturer or authorized distributors?
All CY8C3866LTI-067 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that CY8C3866LTI-067 meets industry standards.
7.What is the process for return or replacement of CY8C3866LTI-067?
All CY8C3866LTI-067 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C3866LTI-067, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The CY8C3866LTI-067 part is unused and in its original packaging.
Return procedure for CY8C3866LTI-067:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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