CY7C65213-28PVXIT - USB-UART Bridge | Infineon
MPN: CY7C65213-28PVXIT ✓ ActiveCY7C65213-28PVXIT Overview
A USB serial bridge is an interface-controller IC that translates USB transactions into a conventional peripheral protocol. The CY7C65213 belongs to the EZ-USB serial bridge family within the broader hierarchy of USB interface controllers, serial-interface semiconductors, and integrated data-conversion devices. This integration reduces host USB-controller overhead and allows firmware, data movement, and peripheral interfacing to be handled locally by the bridge.
The controller's Full-Speed USB 2.0 interface supports legacy USB connectivity while the 3 Mbps UART channel provides a practical rate for many embedded serial links. Additional protocol support for I2C and SPI expands its usefulness for boot programming, sensor aggregation, display controllers, flash-memory programming, and configuration interfaces. Its 32 KB embedded memory gives the firmware designer room for descriptors, endpoint buffers, status information, and application-specific control logic.
The 28-pin SSOP package is suitable for conventional surface-mount PCB assembly. Because the device bridges USB to several peripheral buses, its pin multiplexing, clocking, power, ground, and signal-routing requirements should be matched directly to the manufacturer pin-description table. The manufacturer datasheet also notes that the SLEEP# pin is asserted during USB suspend, supporting low-current behavior in bus-powered equipment.
Typical applications include legacy USB upgrades, industrial serial adapters, instrument-control panels, firmware-programming fixtures, USB-to-RS232 bridges when paired with suitable line-driver circuitry, and embedded systems that need to expose I2C or SPI peripherals to a USB host. The SLEEP# behavior is particularly useful where the host frequently suspends the USB bus and the peripheral system must avoid unnecessary current draw.
Designers should distinguish the electrical USB interface from the UART, I2C, and SPI domains. Each protocol requires the correct pull-ups, termination, voltage compatibility, and firmware configuration. Board layouts should also preserve a short USB signal path, provide stable ground references, and decouple the device close to its supply pins. Verify signal levels and bus topology before treating the bridge as a direct replacement for a simpler UART-only converter.
This page combines manufacturer and distributor product information, protocol-use guidance, drop-in replacement analysis, and practical integration notes. It is intended to help engineers compare bridge capabilities, verify package compatibility, and plan a robust USB-to-serial interface before committing a PCB design to production.
Drop-in alternatives for CY7C65213-28PVXIT — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with CY7C65213-28PVXIT (same form factor and footprint) — differing in Package, Internal Oscillator, Product Type, USB Standard.
CY7C65213-28PVXI
✅ Drop-InContact for price
View Datasheet →CY7C65213A-28PVXIT
✅ Drop-In📋 Reference alternative (not in catalog)
FT232RL-REEL
✅ Drop-InContact for price
View Datasheet →FT232RL-REEL
✅ Drop-InContact for price
View Datasheet →CY7C65213-28PVXIT Specifications
| Product Type | EZ-USB serial bridge controller |
| USB Standard | USB 2.0 Full-Speed |
| USB Interface | USB 2.0 |
| UART Maximum Data Rate | 3 Mbps |
| Supported Peripheral Interfaces | UART, I2C, and SPI |
| Embedded Memory | 32 KB |
| Package | 28-pin SSOP |
| Mounting Type | Surface mount |
| USB Suspend Control | SLEEP# asserted during USB suspend |
| Legacy USB GPIO Support | GPIO support |
CY7C65213-28PVXIT 28-pin ssop Pin Configuration Guide
Pin configuration for CY7C65213-28PVXIT (28-pin ssop package). Pin numbering, functions, and connection diagrams are defined in the manufacturer datasheet. Refer to it for the exact footprint and soldering guidelines.
No detailed pinout data available for CY7C65213-28PVXIT.
Refer to the datasheet for full pin configuration.
Typical Applications
CY7C65213-28PVXIT is suitable for 6 applications: Legacy USB-to-Serial Upgrade, Industrial Sensor and Configuration Interface, USB-to-RS232 Instrument Adapter, Flash Programming and Bootloader Fixture, USB-to-SPI Sensor Gateway, USB-to-I2C Configuration Bridge.
Legacy USB-to-Serial Upgrade
The CY7C65213-28PVXIT fits legacy USB upgrades because it combines a Full-Speed USB 2.0 host interface with a UART capable of 3 Mbps. Firmware can present the attached serial device as a configured USB endpoint without requiring the host to implement a dedicated USB peripheral controller. This is useful when upgrading an existing serial appliance while retaining its established UART connector and protocol. The 32 KB of embedded memory provides space for descriptors, endpoint state, and application logic. Before release, verify the UART electrical levels, connector protection, and whether the target host expects the bridge's particular driver or interface behavior.
Recommended
Industrial Sensor and Configuration Interface
The CY7C65213-28PVXIT is suitable for an industrial configuration fixture that must access UART, I2C, or SPI peripherals through a USB connection. Its Full-Speed USB 2.0 interface supports the bridge role, while the selectable protocol paths allow one controller design to cover sensors, memory devices, and serial adapters. The 3 Mbps UART rate is appropriate for many control and logging links, and the embedded 32 KB supports local configuration and buffering. Industrial equipment should still isolate external buses from noise and ground-potential differences. Validate connector protection, logic thresholds, bus pull-ups, and restart behavior across power-loss and USB-suspend events.
Recommended
USB-to-RS232 Instrument Adapter
The CY7C65213-28PVXIT can serve as the USB-facing controller in a USB-to-RS232 instrument adapter. The 28-pin SSOP bridges Full-Speed USB to a UART operating up to 3 Mbps, allowing a modern host to communicate with legacy serial instrumentation while retaining a standard USB connector. The 32 KB embedded memory can hold device descriptors and protocol-control code, while SLEEP# behavior supports reduced activity during USB suspend. An RS232 adapter also requires an external line driver or transceiver because the bridge does not directly provide the physical RS232 voltage interface. Confirm polarity, grounding, ESD protection, and supported host drivers before production.
Recommended
Flash Programming and Bootloader Fixture
The CY7C65213-28PVXIT fits production programming fixtures where a USB host must reach an embedded target through UART, I2C, or SPI. The controller's multiple protocol options allow the fixture to cover bootloader protocols and peripheral-memory access with one bridge device, while the 3 Mbps UART channel supports faster transfer than many low-speed serial links. Its 32 KB embedded memory can support protocol state, device descriptors, and buffering. Keep sensitive programming voltages and signals outside the bridge's supply domain, and verify timing against the target device. Protection networks should be designed so they do not distort bus levels during high-speed programming operations.
Recommended
USB-to-SPI Sensor Gateway
The CY7C65213-28PVXIT is applicable to a compact sensor gateway that exposes SPI devices to a USB host. Its Full-Speed USB 2.0 interface handles host traffic while the bridge firmware translates commands to the SPI peripheral, avoiding a USB-capable microcontroller in a simple gateway design. The 28-pin SSOP supports compact assembly, and the 32 KB embedded memory can hold endpoint configuration and basic sensor-control routines. SPI timing, chip-select behavior, and logic thresholds must be checked against each sensor. The fixture should include pull-ups or pull-downs only where required by the bus specification, and should avoid long unprotected traces where cable noise or ground offsets could affect reliability.
Recommended
USB-to-I2C Configuration Bridge
The CY7C65213-28PVXIT supports a USB-to-I2C configuration path for control panels, test systems, and service tools that need to configure an I2C peripheral from a USB host. The bridge consolidates USB enumeration and peripheral control in one controller, while the 3 Mbps UART channel remains available for auxiliary diagnostics. Its 32 KB embedded memory allows the designer to implement command parsing, status reporting, and device descriptors without a separate application processor. The I2C bus still requires correct pull-ups and compatible logic levels. Confirm address allocation, bus capacitance, clock stretching behavior, and the consequences of holding the peripheral bridge in reset during system startup.
Recommended
Recommended Products Summary
Engineering reference data for CY7C65213-28PVXIT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | CY7C65213-28PVXI | CY7C65213A-28PVXIT | FT232R | FT232RL |
|---|---|---|---|---|---|
| Brand | Infineon Technologies | Infineon Technologies | Infineon Technologies | FTDI | FTDI |
| Package | 28-SSOP | 28-SSOP | 28-SSOP | 28-SSOP | 28-SSOP |
| Product Type | EZ-USB serial bridge controller | EZ-USB serial bridge controller | EZ-USB serial bridge controller | USB-UART bridge | USB-UART bridge |
| Supported Bridge Protocols | UART, I2C, and SPI | UART, I2C, and SPI | UART, I2C, SPI, and RS485 | UART | UART |
Key Differentiators
- Supports three peripheral protocols through one USB controller (vs FT232R)
- Provides a 3 Mbps UART interface (vs CY7C65213-28PVXI)
- Offers 8 GPIO functions in the related A-series option (vs CY7C65213-28PVXIT)
- Exposes SLEEP# behavior for USB suspend (vs FT232RL)
Design Notes
Place the USB D+ and D- traces as a short, impedance-controlled pair directly between the connector and the CY7C65213-28PVXIT. Avoid routing the differential pair through test pads, switches, or unrelated circuitry unless the production test strategy specifically requires them. Provide a continuous ground reference beneath the pair, keep the USB interface away from switching nodes and high-current return paths, and follow the manufacturer layout and component-placement guidance.
Separate the bridge supply from noisy external-bus power where practical, and place the local bypass capacitor close to the device supply and ground pins. The SLEEP# output provides a mechanism for reducing peripheral-system activity during USB suspend, but the complete current budget must include pull-ups, transceivers, level shifters, and attached loads. Confirm the device's operating-voltage limits and absolute maximum ratings in the manufacturer datasheet before setting the rail voltage.
Do not treat USB-to-UART, USB-to-I2C, and USB-to-SPI operation as electrically interchangeable. UART normally uses point-to-point signaling, while I2C requires suitable pull-ups and a defined bus address, and SPI requires clock, data, and chip-select handling. Also verify host-driver expectations, UART polarity, signal levels, connector protection, and FT232R substitution behavior before releasing a replacement design.
Assign the bridge pins directly from the manufacturer pin-description table and preserve the 28-pin SSOP land pattern without changing pin numbering to accommodate a generic layout. Keep I2C pull-ups near the bus endpoint rather than automatically placing them at the controller, and route SPI clock and data together to minimize skew. If an RS485 function is used with the CY7C65213A variant, place termination and protection at the cable interface instead of beside the controller.
Compliance Information
The manufacturer material identifies USB 2.0 suspend-current behavior but does not establish the requested RoHS, REACH, lead-free, halogen-free, conflict-minerals, or automotive qualification status. AEC-Q100 is not applicable to this general-purpose interface controller unless a separate automotive-qualified orderable variant is selected.