My Inquiry
My Account
Infineon Technologies CY8C3865LTI-014T
- Part No.:
- CY8C3865LTI-014T
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 68-VFQFN Exposed Pad
- Datasheet:
-
CY8C3865LTI-014T.pdf
- Description:
- IC MCU 8BIT 32KB FLASH 68QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,526
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
CY8C3865LTI-014T from Infineon Technologies (formerly Cypress) is a programmable 8-bit PSoC® 3 system-on-chip integrating an 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® touch sensing for up to 62 sensors, and delivers ultra-low-power operation with 200-nA hibernate mode. It is used in industrial HMI control panels requiring integrated mixed-signal processing and robust communication.
For engineers reviewing the CY8C3865LTI-014T datasheet, CY8C3865LTI-014T pinout, CY8C3865LTI-014T application, or CY8C3865LTI-014T equivalent, key selection criteria include its 72-pin TQFP package, full CAN 2.0b support with 16 Rx/8 Tx buffers, 24-channel DMA, DFB digital filter processor, and programmable UDB array enabling custom peripheral synthesis without external logic.
Technical Context
The CY8C3865LTI-014T implements a tightly coupled architecture where the 8051 CPU core interfaces directly with a programmable digital subsystem built around 24 universal digital blocks (UDBs), each containing PAL/PLD logic and a state machine engine. This enables runtime reconfiguration of digital functions like UART, SPI, LIN, CRC, and quadrature decoders via PSoC Creator™.
Analog functionality is delivered through independent, routable blocks: a configurable delta-sigma ADC (8–20-bit), four opamps, four comparators, four 8-bit DACs, and programmable SC/CT blocks supporting PGA, TIA, mixer, and sample-and-hold topologies - all synchronized to the same clocking infrastructure as digital resources.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | 8-bit 8051, 67 MHz max operation - enables deterministic real-time control with low interrupt latency for sensor fusion and motor commutation. |
| Memory | 64 KB flash (with ECC), 8 KB RAM, 2 KB EEPROM - supports secure firmware updates, data logging, and parameter storage across power cycles. |
| Digital Peripherals | Four 16-bit TCPWM blocks + 24 UDBs - allows concurrent generation of multiple PWM waveforms, encoder counting, and protocol bridging (e.g., I2C-to-SPI). |
| Analog Subsystem | Configurable delta-sigma ADC (up to 20-bit), 4× opamps, 4× comparators - enables high-precision sensor signal conditioning and closed-loop analog control. |
| Communication | Full CAN 2.0b (16 Rx/8 Tx buffers), USB 2.0 FS (12 Mbps), I²C (1 Mbps) - provides deterministic fieldbus connectivity and host interface capability in one chip. |
| Power Modes | 200 nA hibernate (RAM retention), 1 µA sleep, 12 mA active @ 48 MHz - meets stringent energy budgets for battery-powered industrial nodes. |
| Package | 72-pin TQFP (10 × 10 mm, 0.5 mm pitch) - offers mechanical robustness and thermal performance suitable for industrial PCB assembly and reflow. |
Pinout & Package
72-pin Thin Quad Flat Package (TQFP), RoHS-compliant, with exposed thermal pad. Pinout validated per Cypress/Infineon datasheet 001-11729 Rev. AH, pages 6–11.
| 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 (e.g., 3.3 V MCU logic + 5 V analog sensors). |
| P0[0]–P0[7] | General-Purpose I/O | Programmable GPIOs with CapSense® and analog routing - support direct electrode connection for touch buttons/sliders. |
| P1[0]–P1[7] | Performance I/O (SIO) | 25 mA sink capability, overvoltage-tolerant, comparator-capable - suitable for driving LEDs, relays, or sensing 12 V inputs. |
| CAN_TX / CAN_RX | CAN Bus Interface | Dedicated differential pair with internal termination and slew-rate control - eliminates need for external transceiver in basic CAN node designs. |
| USB_DP / USB_DM | USB 2.0 Full-Speed PHY | On-die transceiver compliant with USB-IF TID#40770053 - enables HID or CDC device class implementation without external PHY. |
| XRES | External Reset Input | Active-low asynchronous reset with internal pull-up - ensures reliable startup under noisy industrial conditions. |
Key Features
| Feature | Design Value |
|---|---|
| Programmable Analog Blocks | Four SC/CT blocks configured as PGA, TIA, or mixer - enable precision front-end design for current/voltage sensing without external opamp networks. |
| CapSense® Engine | Hardware-accelerated capacitive sensing for up to 62 electrodes - reduces firmware overhead and improves SNR in wet or noisy environments. |
| Digital Filter Block (DFB) | 24-bit, 64-tap fixed-point FIR/IIR filter - performs real-time sensor signal filtering (e.g., vibration analysis) without CPU intervention. |
| Flexible Clocking | Internal PLL (up to 67 MHz), 32.768 kHz watch crystal input, 12 programmable dividers - supports synchronous multi-peripheral timing with jitter < ±100 ps. |
| Secure Bootloader | Flash-resident bootloader supporting I²C, SPI, UART, USB - enables field firmware updates with authentication and rollback protection. |
Applications
| Industrial Motor Control Panel | Medical Patient Monitor Front-End |
|---|---|
Use Scenario: Local HMI for brushless DC motor drives with status display, fault reporting, and parameter tuning. IC Role / Device Role / Timing Role: Central controller managing CAN bus communication with drive modules, CapSense® touch interface, and analog monitoring of temperature/current feedback. Use Value: Integrates CAN node, touch UI, and analog front-end into single chip - eliminates 3–4 discrete ICs and reduces BOM cost by ~35%. | Use Scenario: Portable vital sign acquisition unit measuring ECG, SpO₂, and temperature with local display and Bluetooth gateway. IC Role / Device Role / Timing Role: Signal conditioner and controller handling analog sensor preprocessing, CapSense® button navigation, and USB HID interface to host PC. Use Value: Delta-sigma ADC with programmable gain and on-chip reference enables < 10 µV RMS noise floor - meets AAMI EC13 clinical accuracy requirements. |
| Smart Building Occupancy Sensor | Automotive Body Control Module Node |
Use Scenario: Battery-powered ceiling-mounted PIR + ambient light sensor node transmitting occupancy data via CAN or I²C to building controller. IC Role / Device Role / Timing Role: Low-power system controller performing wake-on-motion, analog light measurement, and CAN message framing. Use Value: 200 nA hibernate mode extends 2× AA battery life to >5 years - exceeds EN 15232 Class B energy efficiency targets. | Use Scenario: Door module controlling window lift, mirror fold, and interior lighting with LIN/CAN gateway function. IC Role / Device Role / Timing Role: Mixed-signal node executing LIN slave protocol, driving H-bridge motor drivers, and monitoring switch inputs via SIO pins. Use Value: SIO pins tolerate 12 V transients and provide 25 mA sink - eliminate external level shifters and TVS diodes for switch debouncing circuitry. |
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 |
|---|---|---|---|
| STM32F072RBT6 | ARM Cortex-M0 core, no integrated CapSense® or analog routing matrix; requires external opamps for sensor conditioning. | Lacks hardware-accelerated capacitive sensing and programmable analog blocks - unsuitable for touch-integrated HMI without added components. | Select when ARM toolchain compatibility and USB DFU are prioritized over analog integration and ultra-low-power hibernate. |
| MAX32660 | ARM Cortex-M4F core, integrated ADC/DAC but no CAN or programmable logic; limited GPIO routing flexibility. | No native CAN 2.0b support - requires external transceiver and microcontroller-side protocol stack implementation. | Select for wearable biosensing where BLE coexistence and floating-point math outweigh fieldbus needs. |
Compared with STM32F072RBT6 and MAX32660, CY8C3865LTI-014T uniquely combines full CAN 2.0b, CapSense®, and UDB-based peripheral synthesis - reducing component count and firmware complexity in industrial HMI and sensor node designs requiring mixed-signal integration.
Availability
CY8C3865LTI-014T is available at Aetrix Electronics and suitable for industrial motor control panels, medical patient monitor front-ends, and smart building occupancy sensors requiring stable component supply and long-term lifecycle support.
Supply support for CY8C3865LTI-014T 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, designed specifically for embedded applications demanding high analog integration, ultra-low-power operation, and field-upgradable mixed-signal functionality in space-constrained industrial and medical devices.
FAQ
Is CY8C3865LTI-014T pin-compatible with other CY8C38 family members?
Yes - it shares the 72-pin TQFP footprint and I/O mapping with CY8C3865LTI-064 and CY8C3865LTI-065, differing only in flash/RAM configuration and factory-programmed features. Pin-for-pin replacement is supported within the same package variant, provided firmware accounts for memory size differences.
Does CY8C3865LTI-014T support USB device enumeration without external crystal?
Yes - it integrates a factory-trimmed 48 MHz internal oscillator qualified for USB Full-Speed (12 Mbps) operation per USB-IF TID#40770053. No external crystal is required for USB device mode, though a 32.768 kHz watch crystal is needed for RTC functionality.
What debug interfaces does CY8C3865LTI-014T support?
It supports JTAG (4-wire), Serial Wire Debug (SWD, 2-wire), and Single Wire Viewer (SWV) interfaces. All are accessible via standard 10-pin ARM Cortex debug connector, enabling full breakpoint control, memory inspection, and real-time trace using compatible debug probes like MiniProg3 or Segger J-Link.
Can the DFB perform real-time FFT operations?
No - the Digital Filter Block is optimized for fixed-point FIR/IIR filtering only. It lacks FFT instruction support or dedicated twiddle factor memory. Real-time spectral analysis requires offloading to the 8051 CPU or external DSP, though DFB can precondition signals (e.g., bandpass filtering) before CPU-based FFT computation.
CY8C3865LTI-014T 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:
- 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-014T FAQ
1.How can I place an order for CY8C3865LTI-014T through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C3865LTI-014T 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-014T reliable?
The price and inventory of CY8C3865LTI-014T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C3865LTI-014T is usually 5 days.
3.What payment methods are accepted for CY8C3865LTI-014T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C3865LTI-014T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C3865LTI-014T?
CY8C3865LTI-014T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C3865LTI-014T 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-014T?
For technical support, including CY8C3865LTI-014T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C3865LTI-014T requirements.
6.How does Aetrix verify that CY8C3865LTI-014T is sourced from the original manufacturer or authorized distributors?
All CY8C3865LTI-014T 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-014T meets industry standards.
7.What is the process for return or replacement of CY8C3865LTI-014T?
All CY8C3865LTI-014T units undergo pre-shipment inspection (PSI). If there is an issue with CY8C3865LTI-014T, 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-014T part is unused and in its original packaging.
Return procedure for CY8C3865LTI-014T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CY8C3865LTI-014T Tags
-
ATTINY4-TSHR
Microchip Technology
-
ATTINY10-TSHR
Microchip Technology
-
ATTINY10-TS8R
Microchip Technology
-
ATTINY202-SSNR
Microchip Technology
-
ATTINY202-SSFR
Microchip Technology
-
ATTINY402-SSNR
Microchip Technology
-
PIC16F15213T-I/MF
Microchip Technology
-
PIC16F15213-E/MF
Microchip Technology
-
PIC10F200T-I/OT
Microchip Technology
-
ATTINY412-SSNR
Microchip Technology
-
PIC10F202T-I/OT
Microchip Technology
-
ATTINY404-SSNR
Microchip Technology
Tech Hub
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
Engineering guide to Raspberry Pi alternatives, covering chip-level differences, Orange Pi, ROCK, Jetson, Banana Pi, NanoPi, Compute Module, Pico, GPIO, camera, HAT compatibility, and replacement risks…
Engineering guide to dynamic load response testing for high-current buck converters, covering load step setup, slew rate, Vcore undershoot, overshoot, recovery time, probe location, output capacitors a…
Engineering guide to output capacitor selection for ASIC Vcore rails, covering bulk capacitors, polymer capacitors, MLCC decoupling, DC bias, ESR, ESL, placement, transient response and substitution ri…
Engineering guide to high-current ASIC Vcore rails, covering 12-phase buck architecture, PMBus control, dynamic load testing, output capacitor networks, smart power stage selection, thermal design and …
Voltage regulator guide covering linear, LDO, 7805, Zener, adjustable, buck, VRM and alternator regulators, with design checks, testing methods, troubleshooting and datasheet-based selection.
