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Infineon Technologies CY7C65211-24LTXIT
- Part No.:
- CY7C65211-24LTXIT
- Manufacturer:
- Infineon Technologies
- Category:
- Controllers
- Package:
- 24-UFQFN Exposed Pad
- Datasheet:
-
CY7C65211-24LTXIT.pdf
- Description:
- IC USB TO SERIAL BRIDGE 24QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,116
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Product details
Overview
CY7C65211-24LTXIT from Infineon Technologies is a USB 2.0 Full-Speed (12 Mbps) single-channel bridge IC supporting configurable UART (up to 3 Mbps), SPI (up to 3 MHz master), and I2C (up to 400 kHz) interfaces, integrated CAPSENSE™ capacitive sensing for up to 5 buttons, battery charger detection (BCD Rev. 1.2), and 10 GPIOs - used in medical devices, POS terminals, and industrial USB-to-legacy serial adapters.
For engineers reviewing the CY7C65211-24LTXIT datasheet, CY7C65211-24LTXIT pinout, CY7C65211-24LTXIT application, or CY7C65211-24LTXIT equivalent, key selection criteria include UART/SPI/I2C protocol flexibility, BCD compliance for portable peripherals, CAPSENSE™ integration for touch UI, and QFN-24 package compatibility with space-constrained embedded designs.
Technical Context
The device integrates a USB Serial Interface Engine (SIE), dual oscillators (48 MHz for USB timing, 32 kHz for low-power functions), and independent buffer memory (190 bytes TX/RX for UART; 256 bytes TX/RX for SPI/I2C). It supports CDC, PHDC, and vendor-class USB descriptors with configurable VID/PID and persistent COM port assignment via unique serial number.
Its CAPSENSE™ subsystem includes auto-tuning algorithms and dedicated GPIO routing for capacitive button sensing, while BCD logic detects D+–D− voltage signatures per USB BC 1.2 (peripheral-only mode). The internal voltage regulator enables operation across 1.71 V–5.5 V supply rails.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| USB Speed | Full-Speed (12 Mbps); meets USB-IF TID 40001521 certification for plug-and-play CDC/PHDC operation |
| UART Max Data Rate | 3 Mbps; supports high-throughput legacy serial protocols like RS232/RS422 without external clocking |
| SPI Clock Frequency | 3 MHz (master), 1 MHz (slave); compatible with common microcontroller peripherals and sensor interfaces |
| I2C Speed Mode | Standard/Fast mode up to 400 kHz; enables direct connection to EEPROMs, sensors, and PMICs |
| CAPSENSE™ Channels | Up to 5 buttons; eliminates need for external touch controller in cost-sensitive HMI designs |
| GPIO Count | 10 pins; configurable as digital I/O, CAPSENSE™ inputs, or UART/SPI/I2C signal lines |
| Operating Voltage | 1.71 V to 5.5 V; supports single-supply operation across battery-powered and industrial rail voltages |
| Package | 24-pin QFN (4.0 mm × 4.0 mm, 0.5 mm pitch); RoHS-compliant, thermally enhanced for compact PCB layouts |
Pinout & Package
24-pin QFN package (4.0 mm × 4.0 mm, 0.5 mm pitch, 0.55 mm height) with exposed thermal pad; pinout validated per Infineon datasheet 001-82042 Rev. *O, Section 5.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDD | Digital power supply | 1.71–5.5 V core supply for digital logic and USB transceiver |
| VCCD | I/O power supply | Independent 1.71–5.5 V rail for GPIO and serial interface voltage level setting |
| VBUS | USB bus voltage sense | Detects USB host presence and powers internal regulator in bus-powered mode |
| USBDP / USBDM | USB differential data pair | Integrated 1.5 kΩ pull-up on USBDP enables USB enumeration without external components |
| nXRES | Active-low reset input | Asynchronous hardware reset; asserted low resets USB state machine and peripheral blocks |
| GPIO[0:9] | Configurable general-purpose I/O | Supports digital input/output, CAPSENSE™ electrode drive, or UART/SPI/I2C signal routing |
| TXD / RXD | UART transmit/receive | 2-pin UART interface; supports RTS/CTS flow control and break signaling |
| SCLK / MOSI / MISO / SS | SPI interface signals | Configurable as master or slave; supports Motorola, TI, and National SPI modes |
| SCL / SDA | I2C clock/data lines | Open-drain outputs with internal pull-ups; support multi-master arbitration |
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 |
| Configurable serial interface | Single physical interface dynamically assigned to UART, SPI, or I2C via firmware - reduces BOM count and PCB footprint |
| Battery charger detection (BCD) | Hardware-level D+–D− voltage measurement per USB BC 1.2 spec; enables automatic charging mode selection in portable devices |
| Persistent COM port assignment | Unique serial number stored in one-time-programmable memory fixes Windows COM port number across reconnections - critical for field-deployed equipment |
| 512-byte configuration flash | User-writable nonvolatile memory stores VID/PID, descriptors, UART format, and CAPSENSE™ tuning parameters - enables field reconfiguration without reflashing firmware |
Applications
| Medical Device Interface | POS Terminal Adapter |
|---|---|
Use Scenario: Connecting legacy ECG or glucose monitor with RS232 output to modern USB-equipped clinical tablets. IC Role / Device Role / Timing Role: USB-to-UART bridge with BCD detection ensures reliable power delivery from tablet USB ports during diagnostics. Use Value: Eliminates external level shifters and charge controllers; CAPSENSE™ enables touch-based UI navigation on handheld diagnostic tools. | Use Scenario: Integrating magnetic stripe reader (MSR) with TTL-level UART into USB-enabled retail checkout systems. IC Role / Device Role / Timing Role: Configurable UART interface handles variable baud rates (9600–115200 bps) and framing errors from legacy MSR modules. Use Value: Reduces adapter board size by 40% vs discrete USB-UART + GPIO solutions; persistent COM port prevents driver reassignment during store hours. |
| Industrial Test Fixture | Automotive Diagnostic Tool |
Use Scenario: Converting SPI-based sensor arrays (e.g., pressure, temperature) in factory calibration rigs to USB-connected PC hosts. IC Role / Device Role / Timing Role: SPI master interface reads sensor registers at 1 MHz; 256-byte buffers prevent data loss during burst transfers. Use Value: Enables deterministic latency under Windows USB polling; GPIOs trigger test sequence start/stop without host software intervention. | Use Scenario: Adding USB connectivity to OBD-II scanners using RS485 for vehicle ECU communication. IC Role / Device Role / Timing Role: UART-to-RS485 transceiver interface with hardware flow control (RTS/CTS) for robust CAN bus diagnostics. Use Value: Supports –40°C to 105°C operation per AEC-Q100 Grade 2; BCD detection ensures stable power from automotive USB chargers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar USB-to-serial bridge applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C65211A-24LTXI | Supports RS485 interface; different PID (0x00FB vs 0x0002); identical pinout and firmware compatibility | Required when bidirectional half-duplex RS485 communication is needed in industrial networks | Select CY7C65211A if RS485 is mandatory; otherwise CY7C65211 offers lower cost for UART/I2C/SPI-only use cases |
| FTDI FT232RL | No CAPSENSE™ or BCD; UART-only; requires external crystal; 28-pin SSOP package | Lacks integrated touch sensing and charger detection; limited to basic USB-to-serial conversion | Choose FT232RL only when CAPSENSE™, BCD, or SPI/I2C bridging are unnecessary and legacy SSOP layout exists |
Compared with CY7C65211A-24LTXI and FT232RL, CY7C65211-24LTXIT uniquely combines CAPSENSE™, BCD, and triple-protocol serial bridging in a 4×4 mm QFN - enabling feature-rich, space-constrained USB peripheral designs without external components.
Availability
CY7C65211-24LTXIT is available at Aetrix Electronics and suitable for medical device interfaces, point-of-sale terminal adapters, and industrial test fixtures requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for CY7C65211-24LTXIT 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 manufacturer specializing in power management, sensing, and connectivity solutions for automotive, industrial, and IoT markets.
The CY7C65211 belongs to Infineon's USB-Serial Bridge product line, designed to simplify USB integration in resource-constrained embedded systems while adding value-added features like CAPSENSE™ and battery charging detection.
FAQ
Does CY7C65211-24LTXIT require an external crystal?
No. The device integrates a 48-MHz oscillator for USB timing and a 32-kHz oscillator for low-power functions, eliminating external crystal requirements and reducing bill-of-materials cost and PCB area. This internal clocking meets USB 2.0 Full-Speed timing accuracy specifications without external components.
Can CY7C65211-24LTXIT operate in self-powered mode?
Yes. It supports both bus-powered (VBUS-derived) and self-powered (VDDD/VCCD supplied externally) configurations. In self-powered mode, VBUS is monitored only for presence detection, allowing operation from local 1.71–5.5 V supplies independent of USB host power - essential for battery-backed or isolated industrial systems.
How is CAPSENSE™ configured on CY7C65211-24LTXIT?
CAPSENSE™ is configured using Infineon's free PSoC Creator-based utility, which auto-tunes sensitivity and debounce parameters. Up to five GPIOs are assigned as CAPSENSE™ electrodes; raw sensor data and button status are accessible via I2C or UART, enabling custom HMI logic without additional microcontroller resources.
What USB device classes does CY7C65211-24LTXIT support natively?
It supports USB Communication Device Class (CDC) for Virtual COM port emulation, Personal Healthcare Device Class (PHDC) for medical data streaming, and vendor-specific class for custom protocol implementation. All classes are enabled via firmware configuration - no hardware changes required - and retain full BCD and CAPSENSE™ functionality across modes.
CY7C65211-24LTXIT 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:
- -
CY7C65211-24LTXIT FAQ
1.How can I place an order for CY7C65211-24LTXIT through Aetrix?
Please submit a Request for Quotation (RFQ) for CY7C65211-24LTXIT 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 CY7C65211-24LTXIT reliable?
The price and inventory of CY7C65211-24LTXIT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY7C65211-24LTXIT is usually 5 days.
3.What payment methods are accepted for CY7C65211-24LTXIT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY7C65211-24LTXIT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY7C65211-24LTXIT?
CY7C65211-24LTXIT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY7C65211-24LTXIT 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 CY7C65211-24LTXIT?
For technical support, including CY7C65211-24LTXIT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY7C65211-24LTXIT requirements.
6.How does Aetrix verify that CY7C65211-24LTXIT is sourced from the original manufacturer or authorized distributors?
All CY7C65211-24LTXIT 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 CY7C65211-24LTXIT meets industry standards.
7.What is the process for return or replacement of CY7C65211-24LTXIT?
All CY7C65211-24LTXIT units undergo pre-shipment inspection (PSI). If there is an issue with CY7C65211-24LTXIT, 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 CY7C65211-24LTXIT part is unused and in its original packaging.
Return procedure for CY7C65211-24LTXIT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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