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Infineon Technologies CY7C65211-24LTXI
- Part No.:
- CY7C65211-24LTXI
- Manufacturer:
- Infineon Technologies
- Category:
- Controllers
- Package:
- 24-UFQFN Exposed Pad
- Datasheet:
-
CY7C65211-24LTXI.pdf
- Description:
- IC USB TO SERIAL BRIDGE 24QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,035
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Product details
Overview
CY7C65211-24LTXI from Infineon is a USB 2.0 Full-Speed (12 Mbps) single-channel bridge IC supporting UART, I²C, and SPI protocols with integrated CAPSENSE™ capacitive sensing (up to 5 buttons), battery charger detection (BCD Rev. 1.2), and 10 GPIOs. It operates from 1.71 V to 5.5 V, features 512-byte configuration flash, 48-MHz internal oscillator, and targets legacy peripheral USB interface in medical devices, POS terminals, and industrial test equipment.
For engineers reviewing the CY7C65211-24LTXI datasheet, CY7C65211-24LTXI pinout, CY7C65211-24LTXI application, or CY7C65211-24LTXI equivalent, this page delivers verified technical context, real-world use cases, validated alternatives, and supply-ready procurement details - all grounded in Infineon's official documentation and package-specific validation.
Technical Context
The CY7C65211-24LTXI integrates a USB Serial Interface Engine (SIE) compliant with USB 2.0 Full-Speed and Battery Charging Specification v1.2 (peripheral-only BCD). Its serial subsystem supports independent UART (up to 3 Mbps, 190-byte buffers), SPI (master up to 3 MHz / slave up to 1 MHz, 256-byte buffers), and I²C (up to 400 kHz, multi-master capable).
It embeds dual oscillators (48 MHz for USB/system clock, 32 kHz for low-power timing), configurable GPIOs linked to CAPSENSE™ sensing nodes, and on-chip 512-byte flash for persistent VID/PID/descriptor and interface configuration - enabling COM port locking and field-updatable behavior without external memory.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| USB Speed | Full-Speed (12 Mbps); enables CDC/PHDC/vendor-class operation without external PHY or hub logic. |
| UART Max Data Rate | 3 Mbps; supports high-throughput serial bridging for industrial controllers and debug interfaces. |
| I²C Clock Frequency | Up to 400 kHz; compatible with standard/fast-mode I²C peripherals including sensors and EEPROMs. |
| SPI Master Clock | Up to 3 MHz; sufficient for driving ADCs, DACs, and display controllers via SPI. |
| CAPSENSE™ Buttons | 5 maximum; provides touch-button interface with auto-tuning algorithm and no external RC components. |
| Operating Voltage | 1.71 V to 5.5 V; allows direct interfacing with 1.8 V, 3.3 V, and 5 V logic domains without level shifters. |
| Package | 24-pin QFN (4.0 mm × 4.0 mm, 0.5 mm pitch); surface-mount footprint optimized for compact USB peripheral designs. |
Pinout & Package
24-pin QFN package (4.0 mm × 4.0 mm, 0.5 mm pitch, 0.55 mm height) with exposed thermal pad. Pin functions validated per Infineon datasheet 001-82042 Rev. *O.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDD | Digital power supply | 1.71–5.5 V core supply for digital logic and USB transceiver; decoupling required. |
| VBUS | USB bus voltage sense | Detects USB host connection and powers internal regulator in bus-powered mode. |
| USBDP / USBDM | USB differential data pair | Direct Full-Speed USB interface with integrated 1.5 kΩ pull-up on USBDP for device enumeration. |
| nXRES | Active-low reset input | Asynchronous hardware reset; held low during power-on or external fault recovery. |
| GPIO[0:9] | Configurable general-purpose I/O | Supports digital input/output, interrupt generation, and CAPSENSE™ electrode routing. |
| UART_TX / UART_RX | Asynchronous serial transmit/receive | Configurable for 2-/4-/6-pin UART; supports RTS/CTS/DTR/DSR flow control and break signaling. |
| SPI_MOSI / MISO / SCLK / SS | SPI master/slave interface | Programmable as master or slave; supports Motorola, TI, and National SPI modes. |
| I2C_SDA / SCL | I²C bidirectional data/clock | Open-drain outputs with internal pull-ups; support multi-master arbitration and clock stretching. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated USB termination | On-die 1.5 kΩ pull-up on USBDP and 15 kΩ pull-downs eliminate external resistors for USB compliance. |
| Unique serial number | Per-device COM port locking prevents Windows port reassignment across reconnections - critical for embedded field deployments. |
| Battery charger detection (BCD) | Hardware-level USB BC 1.2 peripheral detection enables automatic charging mode selection without host software involvement. |
| Auto-tuning CAPSENSE™ | Self-calibrating capacitive sensing engine adapts to environmental drift and PCB parasitics - no manual tuning required. |
| Configurable interface protocol | Single firmware image supports UART/I²C/SPI simultaneously; protocol selection done at runtime via host command or flash config. |
Applications
| Medical Device Interface | POS Terminal Bridge |
|---|---|
Use Scenario: Connecting legacy RS232-based patient monitors or diagnostic tools to modern USB-equipped hospital PCs. IC Role / Device Role / Timing Role: USB-to-UART bridge with CDC-class enumeration and fixed COM port assignment. Use Value: Eliminates need for external USB-UART dongles; ensures deterministic port mapping across clinical software reboots. | Use Scenario: Integrating barcode scanners, magnetic stripe readers, or receipt printers into USB-based point-of-sale systems. IC Role / Device Role / Timing Role: Protocol-transparent serial bridge with BCD support for USB-powered peripherals. Use Value: Enables simultaneous data transfer and battery charging from single USB port - reducing cable clutter and power adapters. |
| Industrial Test Equipment | Automotive Diagnostic Tool |
Use Scenario: Adding USB connectivity to benchtop instruments (e.g., multimeters, signal generators) using existing UART or SPI control interfaces. IC Role / Device Role / Timing Role: Configurable SPI/I²C master bridging MCU peripherals to PC host for firmware updates and calibration data logging. Use Value: 256-byte SPI/I²C buffers reduce host polling overhead; 48-MHz internal clock ensures precise timing for synchronized acquisitions. | Use Scenario: Enabling OBD-II diagnostics in handheld scan tools powered via vehicle USB port. IC Role / Device Role / Timing Role: USB-CDC bridge with -40°C to 105°C industrial temperature grade and BCD-compliant charging detection. Use Value: Reliable operation under automotive thermal cycling; eliminates dependency on external charger ID ICs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar USB-serial bridge applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C65211A-24LTXI | Supports RS485 interface (CY7C65211 does not); same pinout and flash configuration capability. | Required when full-duplex differential serial (RS485) is needed for noise-immune industrial networks. | Select CY7C65211A if RS485 is mandatory; otherwise CY7C65211-24LTXI offers identical UART/I²C/SPI/CAPSENSE™ functionality at lower cost. |
| FTDI FT232H | No CAPSENSE™ or BCD; higher USB bandwidth (High-Speed 480 Mbps); larger 2 KB RX/TX FIFOs. | Preferred for high-bandwidth data acquisition where capacitive touch or charger detection is unnecessary. | Choose FT232H only when USB High-Speed or larger buffers outweigh loss of integrated sensing and BCD features. |
Compared with CY7C65211A-24LTXI and FT232H, the CY7C65211-24LTXI uniquely combines USB Full-Speed bridging, CAPSENSE™, BCD, and industrial temperature range in a single 24-pin QFN - making it optimal for space-constrained, feature-integrated USB peripheral designs where RS485 is not required.
Availability
CY7C65211-24LTXI is available at Aetrix Electronics and suitable for medical device interface, POS terminal integration, and industrial test equipment requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for CY7C65211-24LTXI 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 German semiconductor leader specializing in power management, sensing, connectivity, and security solutions for automotive, industrial, and IoT markets.
The CY7C65211 belongs to Infineon's USB-Serial Bridge product line, designed to simplify USB integration into resource-constrained embedded systems while adding value-added features like CAPSENSE™ and BCD - eliminating discrete component count and firmware complexity.
FAQ
Does CY7C65211-24LTXI support USB High-Speed (480 Mbps)?
No. The CY7C65211-24LTXI is USB 2.0 Full-Speed compliant only, operating at 12 Mbps. It lacks the physical layer circuitry and endpoint architecture required for High-Speed operation. This design choice reduces silicon area, power consumption, and EMI sensitivity - aligning with its target use in low-to-medium bandwidth embedded bridges.
Can the CAPSENSE™ functionality operate independently of the USB interface?
Yes. CAPSENSE™ can be initialized and scanned autonomously via the internal 32-kHz oscillator while the USB interface remains unconnected or suspended. GPIO pins assigned to CAPSENSE™ electrodes retain sensing capability even in USB suspend mode, enabling wake-on-touch functionality in battery-powered applications.
What is the purpose of the 512-byte flash memory?
The 512-byte flash stores persistent configuration parameters including USB descriptors (VID/PID/manufacturer/product strings), interface settings (UART baud rate defaults, SPI mode), CAPSENSE™ tuning values, and the unique serial number. This eliminates the need for external EEPROM and enables field-upgradable behavior via Infineon's configuration utility.
Is CY7C65211-24LTXI pin-compatible with CY7C65211A-24LTXI?
Yes. Both devices share identical 24-pin QFN packaging, pin assignments, and electrical characteristics. The CY7C65211A adds RS485 support through firmware configuration and internal transceiver enablement - no hardware change is required for migration from CY7C65211 to CY7C65211A in existing PCB layouts.
CY7C65211-24LTXI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 24-UFQFN Exposed Pad
- Programmable:
- Not Verified
- Protocol:
- USB
- Function:
- Bridge, USB to I2C
- Interface:
- UART
- Standards:
- USB 2.0
- Voltage - Supply:
- 1.71V ~ 5.5V
- Current - Supply:
- 20mA
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 24-QFN (4x4)
- Grade:
- -
- Qualification:
- -
CY7C65211-24LTXI FAQ
1.How can I place an order for CY7C65211-24LTXI through Aetrix?
Please submit a Request for Quotation (RFQ) for CY7C65211-24LTXI 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 CY7C65211-24LTXI reliable?
The price and inventory of CY7C65211-24LTXI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY7C65211-24LTXI is usually 5 days.
3.What payment methods are accepted for CY7C65211-24LTXI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY7C65211-24LTXI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY7C65211-24LTXI?
CY7C65211-24LTXI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY7C65211-24LTXI 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 CY7C65211-24LTXI?
For technical support, including CY7C65211-24LTXI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY7C65211-24LTXI requirements.
6.How does Aetrix verify that CY7C65211-24LTXI is sourced from the original manufacturer or authorized distributors?
All CY7C65211-24LTXI 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 CY7C65211-24LTXI meets industry standards.
7.What is the process for return or replacement of CY7C65211-24LTXI?
All CY7C65211-24LTXI units undergo pre-shipment inspection (PSI). If there is an issue with CY7C65211-24LTXI, 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 CY7C65211-24LTXI part is unused and in its original packaging.
Return procedure for CY7C65211-24LTXI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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