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Infineon Technologies CY8C3866LTI-030T
- Part No.:
- CY8C3866LTI-030T
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 68-VFQFN Exposed Pad
- Datasheet:
-
CY8C3866LTI-030T.pdf
- Description:
- IC MCU 8BIT 64KB FLASH 68QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,824
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Product details
Overview
CY8C3866LTI-030T 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 - designed for embedded control in low-power industrial sensor nodes and medical monitoring devices.
For engineers reviewing the CY8C3866LTI-030T datasheet, CY8C3866LTI-030T pinout, CY8C3866LTI-030T application, or CY8C3866LTI-030T equivalent, key selection criteria include its 67-MHz max CPU speed, 1.71–5.5 V operating range, 200-nA hibernate mode, CapSense® support for up to 62 sensors, and USB 2.0 Full-Speed peripheral capability with internal oscillator.
Technical Context
The CY8C3866LTI-030T implements a highly flexible mixed-signal architecture centered on a 8051 core augmented by 24-channel DMA and a 24-bit digital filter processor (DFB). Its routing fabric enables any analog or digital peripheral function to be assigned to any GPIO, supported by 12 programmable clock dividers and dual-domain power management.
Analog subsystem includes a configurable 8–20-bit delta-sigma ADC, four opamps, four comparators, four 8-bit DACs, and programmable SC/CT blocks for PGA, TIA, mixer, and sample-and-hold functions. Digital subsystem comprises 16–24 universal digital blocks (UDBs), four TCPWM units, I²C (1 Mbps), USB FS (12 Mbps), and full CAN 2.0b with 16 Rx/8 Tx buffers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | 8-bit 8051 running up to 67 MHz; supports real-time deterministic control with 32 interrupt inputs. |
| Memory | 64 KB flash (with cache/security), 8 KB RAM, 2 KB EEPROM; enables firmware updates and data logging without external memory. |
| Power Modes | 200-nA hibernate (RAM retention), 1-µA sleep, 1.2 mA at 6 MHz active; suitable for battery-powered multi-year deployments. |
| Analog Peripherals | Configurable delta-sigma ADC (8–20 bit), 4× opamps, 4× comparators, 4× 8-bit DACs; supports precision sensor signal conditioning. |
| Digital Interfaces | Full CAN 2.0b (16 Rx/8 Tx), USB 2.0 FS (12 Mbps), I²C (1 Mbps), UART/SPI/I²S via UDBs; enables robust fieldbus and host connectivity. |
| I/O System | 62 GPIOs with flexible routing, 8 SIO pins (25 mA sink, overvoltage tolerant), CapSense® on any pin; simplifies PCB layout and touch integration. |
| Operating Range | 1.71–5.5 V supply, –40 to +85 °C ambient; supports wide-input industrial power rails and harsh environments. |
Pinout & Package
Package: 68-pin QFN (9 × 9 mm, 0.5 mm pitch), thermally enhanced with exposed thermal pad - optimized for compact industrial and portable medical PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Supports up to six independent power domains; VDD pins accept 1.71–5.5 V input for mixed-voltage I/O interfacing. |
| P0[0]–P0[7], P1[0]–P1[7], etc. | General-purpose I/O | 62 GPIOs fully routable to any digital/analog peripheral; all support CapSense® and LCD segment drive. |
| SIO[0]–SIO[7] | Performance I/O | 8 high-drive pins (25 mA sink), hot-swap capable, overvoltage tolerant to 6.5 V; usable as comparators or analog inputs. |
| USB_DP / USB_DM | USB 2.0 Full-Speed interface | Dedicated differential pair for 12 Mbps USB communication; requires no external PHY - internal oscillator supports crystal-less operation. |
| CAN_TX / CAN_RX | CAN 2.0b transceiver interface | Direct connection to external CAN transceiver; supports 1 Mbps baud rate with integrated protocol engine and 16 Rx/8 Tx message buffers. |
| XRES | External reset input | Active-low asynchronous reset pin; accepts 1.2–5.5 V logic levels and supports debounced external push-button reset. |
| TCK/TMS/TDI/TDO | JTAG debug interface | 4-wire boundary-scan and programming interface; compatible with standard JTAG tools and MiniProg3 programmers. |
Key Features
| Feature | Design Value |
|---|---|
| Configurable UDB array (16–24 blocks) | Enables custom digital logic (UART, SPI, PRS, CRC, quadrature decoder) without external ICs - reduces BOM count and board area. |
| CapSense® on any GPIO | Supports up to 62 self- or mutual-capacitance sensors using only firmware configuration - eliminates dedicated touch controller ICs. |
| Programmable analog blocks (SC/CT) | Allows implementation of PGA, TIA, mixer, or sample-and-hold circuits via register-level configuration - replaces discrete opamp networks. |
| Internal boost regulator | Generates regulated 5-V output from as low as 0.5-V input - enables energy harvesting applications with ultra-low-voltage sources. |
| USB FS with internal oscillator | Eliminates need for external 48-MHz crystal; certified per USB-IF TID#40770053 - reduces component count and layout complexity. |
Applications
| Industrial Sensor Node | Portable Medical Monitor |
|---|---|
Use Scenario: Battery-powered temperature/humidity/pressure node in factory automation with CAN bus telemetry and local CapSense® UI. IC Role / Device Role / Timing Role: Central controller executing sensor fusion, CAN protocol stack, and capacitive button scanning - all within single chip. Use Value: 200-nA hibernate extends 10-year battery life; 62 GPIOs route ADC, CAN, and CapSense® without multiplexers or level shifters. | Use Scenario: Wearable ECG/SpO₂ monitor with analog front-end, USB data export, and touch-sensitive display controls. IC Role / Device Role / Timing Role: Mixed-signal SoC performing analog acquisition (delta-sigma ADC + PGA), USB mass storage emulation, and CapSense® gesture detection. Use Value: Integrated 4× opamps and programmable SC/CT blocks replace 6+ discrete analog components; USB FS enables plug-and-play clinical data transfer. |
| Smart Home Hub Controller | Automated Test Equipment (ATE) Front-End |
Use Scenario: Low-cost home gateway aggregating Zigbee/Z-Wave sub-GHz radios via UART/SPI, managing local lighting via PWM, and supporting touch UI. IC Role / Device Role / Timing Role: Firmware-configurable hub MCU handling multiple serial protocols, 16-bit PWM dimming, and CapSense® slider controls. Use Value: UDB-based UART/SPI peripherals scale across radio modules without hardware changes; 67-MHz CPU handles concurrent protocol stacks. | Use Scenario: Modular ATE channel card requiring precision voltage/current sourcing, analog measurement, and GPIB/USB host interface. IC Role / Device Role / Timing Role: Precision analog controller generating calibrated outputs (DAC + opamp), digitizing DUT responses (ADC + PGA), and reporting via USB. Use Value: 20-bit delta-sigma ADC and 4× programmable gain amplifiers achieve <0.1% measurement accuracy; internal reference (1.024 V ±0.1%) eliminates external VREF IC. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable mixed-signal SoC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY8C3866AXI-063 | Same PSoC 3 core, but 100-pin TQFP package and higher I/O count (72 pins); no USB FS support. | Better suited for high-pin-count industrial controllers needing more GPIOs and analog channels, but lacks USB connectivity. | Select when board space allows larger package and USB is not required; retains identical firmware compatibility. |
| STM32F303VCT6 | ARM Cortex-M4F core, 72 MHz, 256 KB flash, 48 KB RAM; includes FPU and hardware CRC, but no integrated CapSense® or programmable analog blocks. | Preferred for math-intensive control (e.g., motor FOC) but requires external components for capacitive sensing or precision analog front-ends. | Choose for floating-point computation needs or ecosystem alignment with STM32Cube; expect added BOM cost for touch/analog functions. |
Compared with CY8C3866AXI-063 and STM32F303VCT6, the CY8C3866LTI-030T uniquely combines USB FS, full CAN, CapSense®, and configurable analog in a 68-pin QFN - minimizing external components for compact, low-power mixed-signal systems where firmware flexibility outweighs raw CPU throughput.
Availability
CY8C3866LTI-030T is available at Aetrix Electronics and suitable for industrial sensor nodes, portable medical monitors, smart home hubs, and automated test equipment requiring stable component supply and long-term lifecycle support.
Supply support for CY8C3866LTI-030T 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, delivering power systems, microcontrollers, sensors, and security solutions for automotive, industrial, and IoT markets.
The CY8C38 family belongs to Infineon's PSoC® 3 programmable SoC product line, engineered to unify analog signal conditioning, digital processing, and system control in a single chip - targeting cost-sensitive, low-power embedded applications demanding rapid customization without ASIC development.
FAQ
Is CY8C3866LTI-030T pin-compatible with other CY8C38 family members?
No - it uses a 68-pin QFN package, while other variants include 48-pin SSOP/QFN, 100-pin TQFP, and 72-pin WLCSP. Pin mapping differs across packages due to I/O count and feature allocation (e.g., USBIO pins exist only in select packages). Always verify pinout against the specific device's datasheet section "Pin Descriptions".
Does CY8C3866LTI-030T support USB device enumeration without an external crystal?
Yes - it integrates a factory-trimmed internal oscillator qualified for USB 2.0 Full-Speed (12 Mbps) operation, certified under USB-IF TID#40770053. No external 48-MHz crystal is required, reducing bill-of-materials and PCB layout complexity for USB peripheral implementations.
What development tools are required to program and debug CY8C3866LTI-030T?
PSoC Creator™ IDE (free download from infineon.com) is mandatory for schematic-based design and component configuration. Programming and debugging require either MiniProg3 (JTAG/SWD) or KitProg (on CY8CKIT-030/CY8CKIT-001). The device supports bootloader updates over I²C, SPI, UART, and USB - enabling field firmware upgrades without debug hardware.
Can the delta-sigma ADC operate simultaneously with CapSense® scanning?
Yes - the PSoC 3 architecture separates analog resources: the delta-sigma ADC and CapSense® use independent analog muxes, opamps, and reference paths. Both can run concurrently with proper resource allocation in PSoC Creator; timing is managed via hardware-triggered DSI events to avoid interference in time-critical measurements.
CY8C3866LTI-030T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 68-VFQFN Exposed Pad
- Series:
- PSOC™ 3 CY8C38xx
- Packaging:
- Tape & Reel (TR)
- 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:
- 38
- 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-030T FAQ
1.How can I place an order for CY8C3866LTI-030T through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C3866LTI-030T 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-030T reliable?
The price and inventory of CY8C3866LTI-030T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C3866LTI-030T is usually 5 days.
3.What payment methods are accepted for CY8C3866LTI-030T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C3866LTI-030T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C3866LTI-030T?
CY8C3866LTI-030T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C3866LTI-030T 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-030T?
For technical support, including CY8C3866LTI-030T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C3866LTI-030T requirements.
6.How does Aetrix verify that CY8C3866LTI-030T is sourced from the original manufacturer or authorized distributors?
All CY8C3866LTI-030T 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-030T meets industry standards.
7.What is the process for return or replacement of CY8C3866LTI-030T?
All CY8C3866LTI-030T units undergo pre-shipment inspection (PSI). If there is an issue with CY8C3866LTI-030T, 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-030T part is unused and in its original packaging.
Return procedure for CY8C3866LTI-030T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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