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Infineon Technologies CY7C65211A-24LTXI
- Part No.:
- CY7C65211A-24LTXI
- Manufacturer:
- Infineon Technologies
- Category:
- Controllers
- Package:
- 24-UFQFN Exposed Pad
- Datasheet:
-
CY7C65211A-24LTXI.pdf
- Description:
- IC USB TO UART/I2C/SPI 24QFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,252
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Product details
Overview
CY7C65211A-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, battery charger detection (BCD Rev. 1.2), and RS485 interface capability. It operates from 1.71 V to 5.5 V, features 512-byte configuration flash, 256-byte TX/RX buffers per serial interface, and supports industrial temperature range (–40°C to +85°C) in a 24-pin QFN package.
For engineers reviewing the CY7C65211A-24LTXI datasheet, CY7C65211A-24LTXI pinout, CY7C65211A-24LTXI application, or CY7C65211A-24LTXI equivalent, this device serves as a configurable USB-to-serial interface for legacy peripheral modernization, embedded system debugging, and touch-enabled industrial HMI designs requiring robust BCD and multi-protocol bridging.
Technical Context
The CY7C65211A integrates a USB Serial Interface Engine (SIE) with on-die 48-MHz oscillator and dual internal oscillators (48 MHz and 32 kHz), enabling autonomous USB enumeration and low-power suspend/resume without external clock sources. Its serial communication block supports simultaneous protocol selection-UART up to 3 Mbps with hardware flow control (CTS/RTS/DTR/DSR), SPI master/slave at 3 MHz/1 MHz, and I²C up to 400 kHz with multi-master support.
CAPSENSE™ subsystem includes five dedicated button inputs with auto-tuning algorithm and GPIO-linked sensing nodes, while BCD logic implements peripheral-side USB Battery Charging Specification v1.2 detection only-no host-side charging negotiation. The device supports both bus-powered and self-powered configurations with integrated voltage regulation and 2.2 kV HBM ESD protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| USB Speed | Full-Speed (12 Mbps); enables CDC-class virtual COM port operation without external PHY or timing components. |
| UART Max Data Rate | 3 Mbps; supports high-throughput debugging links and industrial telemetry over RS232/RS422/RS485. |
| I²C Clock Frequency | Up to 400 kHz; compatible with standard-mode and fast-mode I²C peripherals including sensors and EEPROMs. |
| SPI Master Rate | 3 MHz; sufficient for driving displays, ADCs, and digital potentiometers without external clock scaling. |
| CAPSENSE™ Buttons | 5 independent capacitive touch inputs with auto-calibration; eliminates need for external touch controller in HMI designs. |
| Operating Temp Range | –40°C to +85°C (industrial grade); validated for use in factory automation, automotive infotainment gateways, and outdoor POS terminals. |
| Package | 24-pin QFN (4.0 mm × 4.0 mm, 0.5 mm pitch); surface-mount compatible with automated PCB assembly and thermal pad for enhanced power dissipation. |
| Flash Memory | 512 bytes; stores VID/PID, descriptors, UART/I²C/SPI configuration, and CAPSENSE™ tuning parameters-enables field-updatable device identity. |
Pinout & Package
24-pin QFN package (4.0 mm × 4.0 mm, 0.5 mm pitch) with exposed thermal pad; RoHS-compliant, lead-free, and moisture-sensitive level 3 (MSL3).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDD | Digital supply (1.71–5.5 V) | Power domain for USB transceiver, SIE, and digital logic; decoupling required near pin. |
| VCCD | I/O supply (1.71–5.5 V) | Configurable I/O voltage rail; sets logic levels for UART/SPI/I²C/GPIO pins independently of VDDD. |
| USBDP / USBDM | USB differential data pair | Integrated 1.5-kΩ pull-up on USBDP for Full-Speed enumeration; no external resistors needed. |
| nXRES | Active-low reset input | Asynchronous reset signal; held low during power-on reset or triggered externally for firmware recovery. |
| GPIO[0:9] | General-purpose I/O | 10 bidirectional pins; configurable as CAPSENSE™ inputs, UART control lines (CTS/RTS), or SPI chip selects. |
| UART_TX / UART_RX | UART data transmit/receive | Supports 2-/4-/6-pin UART modes; configurable for RS232/RS422/RS485 via external transceivers. |
| SPI_MOSI / MISO / SCLK / SS | SPI master/slave interface | Four dedicated pins; support Motorola, TI, and National SPI modes with programmable polarity/phase. |
| I2C_SDA / SCL | I²C bidirectional data/clock | Open-drain outputs with internal pull-ups; compatible with 100/400 kHz I²C buses and multi-master arbitration. |
Key Features
| Feature | Design Value |
|---|---|
| USB Battery Charger Detection (BCD) | Peripheral-side detection per USB BC 1.2; enables automatic charging mode selection in portable medical devices without host coordination. |
| Multi-Protocol Serial Bridge | Single IC supports UART, I²C, and SPI simultaneously-reduces BOM count and PCB footprint versus discrete bridge solutions. |
| CAPSENSE™ with Auto-Tuning | On-chip algorithm adapts to environmental drift and PCB parasitics; eliminates manual calibration in production for 5-button touch interfaces. |
| Fixed COM Port Assignment | Unique serial number per device ensures consistent Windows COM port enumeration-critical for plug-and-play field service tools. |
| Bus- and Self-Powered Operation | Internal regulator supports direct VBUS connection (bus-powered) or external 3.3/5 V supply (self-powered); simplifies power architecture in mixed-voltage systems. |
Applications
| Medical Device Interface | Industrial HMI Panel |
|---|---|
Use Scenario: Connecting legacy RS485-based patient monitors to USB-equipped nursing station PCs. IC Role / Device Role / Timing Role: USB-to-RS485 bridge with BCD-aware power management for battery-backed bedside units. Use Value: Eliminates external level shifters and USB PHY chips; RS485 support enables noise-immune cabling over 1200 m in hospital environments. |
Use Scenario: Touch-enabled control panel for PLC-driven packaging machinery with real-time status feedback. IC Role / Device Role / Timing Role: CAPSENSE™-enabled USB interface handling both user input and serial command relay to motion controllers. Use Value: Integrates 5-button touch sensing and UART-to-USB conversion in one IC, reducing layer count and assembly cost vs. separate MCU + bridge solution. |
| POS Terminal Peripheral Hub | Automotive Diagnostic Tool |
Use Scenario: Aggregating barcode scanner, magnetic stripe reader, and receipt printer into single USB-C port on retail tablet. IC Role / Device Role / Timing Role: Multi-protocol bridge managing concurrent UART (scanner), I²C (printer), and GPIO (LED indicators) traffic. Use Value: 256-byte buffers per interface prevent data loss during burst transfers; unique serial number ensures stable COM mapping across hot-plug events. |
Use Scenario: Handheld OBD-II adapter converting vehicle CAN messages (via external transceiver) to USB for Android diagnostics apps. IC Role / Device Role / Timing Role: USB interface controller with configurable UART baud rates (up to 3 Mbps) and industrial-temp operation. Use Value: –40°C to +105°C automotive-grade variant available; supports rapid firmware updates via USB without host driver reinstallation. |
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 |
|---|---|---|---|
| FTDI FT232H | Single-channel USB 2.0 Hi-Speed (480 Mbps); no CAPSENSE™ or BCD; supports JTAG/SPI/I²C/UART but requires external crystal. | Lacks integrated touch sensing and battery detection; better suited for high-bandwidth test equipment than embedded HMI. | Select when >12 Mbps throughput or JTAG boundary scan is required; avoid if CAPSENSE™ or BCD is mandatory. |
| Microchip MCP2221A | USB 2.0 Full-Speed (12 Mbps); includes DAC and analog comparator; no RS485 support or CAPSENSE™; smaller 20-pin QFN. | Missing RS485 physical layer support and auto-tuning capacitive sensing-unsuitable for noisy industrial or touch-centric designs. | Prefer for cost-sensitive consumer USB-I²C adapters where analog features outweigh protocol breadth. |
Compared with FT232H and MCP2221A, CY7C65211A-24LTXI uniquely combines RS485 interface readiness, CAPSENSE™ auto-tuning, and BCD compliance in a single industrial-grade package-making it optimal for medical, automotive, and ruggedized HMI applications where protocol flexibility and embedded sensing are co-required.
Availability
CY7C65211A-24LTXI is available at Aetrix Electronics and suitable for medical device interface, industrial HMI panel, POS terminal peripheral hub, and automotive diagnostic tool applications requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant manufacturing.
Supply support for CY7C65211A-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 manufacturer specializing in power management, sensor, and connectivity solutions for automotive, industrial, and IoT markets.
CY7C65211A belongs to Infineon's USB-Serial Bridge product line, designed specifically to simplify USB integration in resource-constrained embedded systems while adding value through CAPSENSE™, BCD, and multi-protocol flexibility.
FAQ
Does CY7C65211A-24LTXI require an external crystal?
No. The device integrates a factory-trimmed 48-MHz oscillator and a 32-kHz low-power oscillator, eliminating the need for external crystals or resonators. This reduces bill-of-materials cost and PCB area while improving startup reliability across temperature ranges.
Can CY7C65211A support RS485 half-duplex communication?
Yes. The UART interface supports RS485 half-duplex mode using GPIO-controlled direction control (DE/RE signals). External RS485 transceivers such as MAX3072E or SN65HVD72 connect directly to UART_TX/RX and GPIO pins for automatic direction management.
How is CAPSENSE™ tuning performed on CY7C65211A?
Tuning is executed via Infineon's free PSoC Creator-based configuration utility running on Windows. The utility performs real-time auto-calibration of baseline, sensitivity, and noise thresholds, then writes optimized parameters to the device's 512-byte flash memory for persistent operation.
Is CY7C65211A-24LTXI compatible with Linux kernel 5.15?
Yes. The device uses standard CDC ACM class drivers supported natively in Linux kernels ≥2.6.35. No proprietary drivers are required-plug-and-play enumeration as /dev/ttyACM0 occurs automatically, with full support for termios-based baud rate and framing configuration.
CY7C65211A-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:
- -
CY7C65211A-24LTXI FAQ
1.How can I place an order for CY7C65211A-24LTXI through Aetrix?
Please submit a Request for Quotation (RFQ) for CY7C65211A-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 CY7C65211A-24LTXI reliable?
The price and inventory of CY7C65211A-24LTXI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY7C65211A-24LTXI is usually 5 days.
3.What payment methods are accepted for CY7C65211A-24LTXI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY7C65211A-24LTXI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY7C65211A-24LTXI?
CY7C65211A-24LTXI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY7C65211A-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 CY7C65211A-24LTXI?
For technical support, including CY7C65211A-24LTXI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY7C65211A-24LTXI requirements.
6.How does Aetrix verify that CY7C65211A-24LTXI is sourced from the original manufacturer or authorized distributors?
All CY7C65211A-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 CY7C65211A-24LTXI meets industry standards.
7.What is the process for return or replacement of CY7C65211A-24LTXI?
All CY7C65211A-24LTXI units undergo pre-shipment inspection (PSI). If there is an issue with CY7C65211A-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 CY7C65211A-24LTXI part is unused and in its original packaging.
Return procedure for CY7C65211A-24LTXI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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