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Infineon Technologies CY8C3865LTI-014
- Part No.:
- CY8C3865LTI-014
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 68-VFQFN Exposed Pad
- Datasheet:
-
CY8C3865LTI-014.pdf
- Description:
- IC MCU 8BIT 32KB FLASH 68QFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,713
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Product details
Overview
CY8C3865LTI-014 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 industrial sensors, medical devices, and automotive subsystems requiring mixed-signal integration and low-power operation.
For engineers reviewing the CY8C3865LTI-014 datasheet, CY8C3865LTI-014 pinout, CY8C3865LTI-014 application, or CY8C3865LTI-014 equivalent, key selection criteria include its 67-MHz max CPU speed, 1.71–5.5 V operating range, 200-nA hibernate mode, USB 2.0 Full-Speed peripheral support, and CapSense® capacitive sensing capability.
Technical Context
The CY8C3865LTI-014 implements a highly flexible architecture centered on a 8051 core with DMA and digital filter processor (DFB), enabling concurrent real-time signal processing and control. Its routing fabric allows any analog or digital peripheral function to be assigned to any GPIO, supported by 24 UDBs for custom logic synthesis.
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 functions. Digital subsystem integrates four TCPWM blocks, 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 - enables deterministic real-time control with minimal code footprint |
| Flash / RAM | 64 KB flash with ECC + 8 KB RAM - supports secure firmware storage and runtime data buffering |
| Power Modes | 200-nA hibernate with RAM retention - extends battery life in always-on sensor nodes |
| Analog ADC | Configurable 8–20-bit delta-sigma ADC - delivers high-resolution measurement for precision sensing |
| Digital Interface | Full CAN 2.0b (16 Rx/8 Tx buffers) + USB 2.0 FS - enables robust fieldbus communication and host connectivity |
| I/O Flexibility | Up to 62 GPIOs with per-pin analog/digital routing - eliminates external muxing and simplifies PCB layout |
| CapSense® | Support for up to 62 capacitive sensors - enables touch UI implementation without dedicated controller IC |
Pinout & Package
Package: 68-pin QFN (7 mm × 7 mm, 0.5 mm pitch), thermally enhanced with exposed thermal pad - suitable for compact industrial modules requiring efficient heat dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDIO0–VDDIO3 | I/O Power Domains | Four independent 1.2–5.5 V supply rails enable mixed-voltage interfacing and domain isolation |
| P0[0]–P0[7] | General-Purpose I/O | Configurable as digital/analog inputs/outputs; support CapSense®, LCD drive, and comparator functions |
| USB_DP / USB_DM | USB 2.0 Full-Speed Interface | Dedicated differential pair with internal transceiver - eliminates external PHY for USB device applications |
| CAN_TX / CAN_RX | CAN 2.0b Physical Layer | Direct connection to external CAN transceiver - supports 1 Mbps bus rate with integrated protocol engine |
| XRES | External Reset Input | Active-low asynchronous reset with internal pull-up - ensures reliable power-on and fault recovery |
| TCK / TMS / TDI / TDO | JTAG Debug Interface | 4-wire boundary scan and programming interface - enables in-circuit debugging and flash programming |
Key Features
| Feature | Design Value |
|---|---|
| Programmable Analog Blocks | Four SC/CT blocks configurable as PGA, TIA, mixer, or sample-and-hold - replaces discrete analog front-end components |
| Digital Filter Processor (DFB) | 24-bit, 64-tap fixed-point engine - performs real-time FIR/IIR filtering without CPU load |
| UDB Array | 24 universal digital blocks with PAL+state machine - synthesizes custom peripherals like LIN, CRC, PRS, or quadrature decoders |
| CapSense® Engine | Hardware-accelerated capacitive sensing with noise immunity - enables robust touch buttons/sliders at <1 µA average current |
| Flexible Clocking | Internal PLL (up to 67 MHz), 32.768-kHz watch crystal input, and 12 routable clock dividers - supports precise timing across mixed-signal domains |
Applications
| Industrial Sensor Node | Medical Wearable Monitor |
|---|---|
Use Scenario: Battery-powered temperature/humidity/pressure sensor node with wireless telemetry. IC Role / Device Role / Timing Role: Central PSoC 3 controller managing analog sensor conditioning, ADC sampling, CAN/USB data aggregation, and low-power state management. Use Value: Single-chip integration reduces BOM count by >7 components; 200-nA hibernate extends 2-year battery life. | Use Scenario: ECG/PPG wearable with dry-electrode contact detection and real-time waveform analysis. IC Role / Device Role / Timing Role: Mixed-signal hub performing analog front-end amplification/filtering, delta-sigma ADC conversion, DFB-based noise cancellation, and USB HID reporting. Use Value: On-chip PGA and TIA eliminate external opamp stages; CapSense® detects electrode placement without added sensors. |
| Automotive Body Control Module | Smart Home Touch Interface |
Use Scenario: Door module controlling window lift, mirror adjustment, and interior lighting via CAN bus. IC Role / Device Role / Timing Role: CAN 2.0b endpoint with PWM motor control, GPIO-driven relays, and watchdog-managed safety monitoring. Use Value: Integrated CAN controller with 16 Rx buffers handles multiplexed message traffic; TCPWM blocks drive motors with <1% duty-cycle jitter. | Use Scenario: Wall-mounted HVAC control panel with capacitive touch keys, LCD display, and ambient light sensing. IC Role / Device Role / Timing Role: CapSense® touch controller, LCD segment driver (46×16), ambient ADC input, and I²C master to HVAC MCU. Use Value: All UI functions implemented in one chip; no external touch controller or display driver required. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable SoC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY8C3866LTI-060 | Same CY8C38 family; 100-pin TQFP package, 72 GPIOs, higher I/O count and memory (64 KB flash, 8 KB RAM) | Targeted at larger systems requiring more analog channels, USB + CAN coexistence, or expanded CapSense® electrode count | Select when board space permits larger package and design requires >62 GPIOs or dual-domain analog routing |
| STM32F303VCT6 | ARM Cortex-M4F core, 256 KB flash, 48 KB RAM, but lacks integrated CapSense®, programmable analog blocks, and USB-CAN co-integration | Requires external components for capacitive sensing, analog front-end, and CAN PHY - increases BOM and layout complexity | Choose only if ARM toolchain compatibility or floating-point DSP performance outweighs PSoC's analog/digital configurability |
Compared with CY8C3865LTI-014, the CY8C3866LTI-060 offers greater I/O scalability in a larger package, while the STM32F303VCT6 trades PSoC's hardware-programmable analog/digital flexibility for higher CPU performance and ecosystem breadth - making it less optimal for mixed-signal rapid prototyping.
Availability
CY8C3865LTI-014 is available at Aetrix Electronics and suitable for industrial sensor nodes, medical wearables, automotive body control modules, and smart home touch interfaces requiring stable component supply, long-term lifecycle support, and qualified automotive-grade variants.
Supply support for CY8C3865LTI-014 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 acquired Cypress Semiconductor in 2020 and now owns and supports the full PSoC® portfolio, maintaining legacy part numbers and documentation continuity for design assurance and supply chain stability.
The CY8C38 family belongs to Infineon's programmable mixed-signal SoC product line, engineered to replace multi-chip analog-digital solutions in cost-sensitive, space-constrained embedded systems where configurability, ultra-low power, and rapid development are critical.
FAQ
Is CY8C3865LTI-014 pin-compatible with other CY8C38-series devices?
Yes - CY8C3865LTI-014 uses the 68-pin QFN package shared with CY8C3865LTI-060 and CY8C3866LTI-014. Pin functions are consistent across same-package variants, though some GPIOs may differ in analog routing capability or CapSense® channel assignment based on die configuration.
Does CY8C3865LTI-014 support USB device functionality without external components?
Yes - it integrates a full-speed USB 2.0 peripheral controller with internal transceiver, requiring only a USB connector and standard termination resistors. No external PHY or level-shifter is needed, and USB enumeration is handled in firmware using Cypress-provided USB Component libraries in PSoC Creator.
What development tools are required to program and debug CY8C3865LTI-014?
PSoC Creator™ IDE (free download from infineon.com) is mandatory for schematic-based design and component configuration. Programming and debugging require MiniProg3 or KitProg2 programmer/debugger hardware, supporting JTAG, SWD, and SWV interfaces - all fully integrated into the IDE workflow.
Can CY8C3865LTI-014 operate reliably at 1.71 V supply voltage?
Yes - it is fully specified down to 1.71 V across the full –40°C to +85°C ambient range. At this voltage, CPU frequency is limited to ≤24 MHz, and analog peripherals maintain accuracy per datasheet Section 11.5, with internal voltage reference (1.024 V ±0.1%) remaining stable and usable for ADC/DAC calibration.
CY8C3865LTI-014 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 68-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:
- 38
- Program Memory Size:
- 32KB (32K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 1K x 8
- RAM Size:
- 4K 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:
CY8C3865LTI-014 FAQ
1.How can I place an order for CY8C3865LTI-014 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C3865LTI-014 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 CY8C3865LTI-014 reliable?
The price and inventory of CY8C3865LTI-014 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C3865LTI-014 is usually 5 days.
3.What payment methods are accepted for CY8C3865LTI-014?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C3865LTI-014 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C3865LTI-014?
CY8C3865LTI-014 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C3865LTI-014 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 CY8C3865LTI-014?
For technical support, including CY8C3865LTI-014 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C3865LTI-014 requirements.
6.How does Aetrix verify that CY8C3865LTI-014 is sourced from the original manufacturer or authorized distributors?
All CY8C3865LTI-014 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 CY8C3865LTI-014 meets industry standards.
7.What is the process for return or replacement of CY8C3865LTI-014?
All CY8C3865LTI-014 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C3865LTI-014, 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 CY8C3865LTI-014 part is unused and in its original packaging.
Return procedure for CY8C3865LTI-014:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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