UART/I2C/IrDA Serial Port to USB Bridge - TUSB3410


UART/I2C/IrDA Serial Port to USB Bridge



The TUSB3410 device provides bridging between a USB port and an enhanced UART serial port. The device contains an 8052 microcontroller unit (MCU) with 16KB of RAM that can be loaded from the host or from the external onboard memory through an I2C. The device also contains 10KB of ROM that allows the MCU to configure the USB port at boot time. The ROM code also contains an I2C bootloader. All device functions (such as the USB command decoding, UART setup, and error reporting) are managed by the internal MCU firmware in unison with the PC host.


  • Fully Compliant With USB 2.0 Full-Speed
    Specifications: TID#40340262
  • Supports 12-Mbps USB Data Rate (Full Speed)
  • Supports USB Suspend, Resume, and Remote
    Wake-Up Operations
  • Configurable to Bus-Powered and Self-Powered
  • Supports a Total of Three Input and Three Output
    (Interrupt, Bulk) Endpoints
  • Integrated 8052 Microcontroller With:
    • 256 × 8 RAM for Internal Data
    • 10K × 8 ROM (With USB and I2C Bootloader)
    • 16K × 8 RAM for Code Space Loadable From
      Host or I2C Port
    • 2K × 8 Shared RAM Used for Data
      Buffers and Endpoint Descriptor Blocks (EDBs)
    • Master I2C Controller for EEPROM Device
    • MCU Operates at 24 MHz, Providing 2-MIPS
    • 128-ms Watchdog Timer
  • Enhanced UART Features:
    • Software and Hardware Flow Control
    • Automatic RS-485 Bus Transceiver Control,
      With and Without Echo
    • Selectable IrDA Mode for Up to 115.2-kbps
    • Software-Selectable Baud Rate From 50 BPS to
      921.6 kbps
    • Programmable Serial-Interface Characteristics ul>
    • 5-, 6-, 7-, or 8-Bit Characters
    • Even, Odd, or No Parity-bit Generation and
    • 1-, 1.5-, or 2-Stop Bit Generation
  • Line Break Generation and Detection
  • Internal Test and Loopback Capabilities
  • Modem Control Functions (CTS, RTS, DSR, RI
    and DCD)
  • Internal Diagnostic Capability
    • Loopback Control for Communications
      Link-Fault Isolation
    • Break, Parity, Overrun, Framing-Error

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Parametrics Compare all products in USB Peripheral

USB Speed (Mbps)
Number of Endpoints IN
Number of Endpoints OUT
Supply Voltage(s) (V)
MCU Code Space (KBytes)
GPIO Pins (#)
Operating Temperature Range (C)
Approx. Price (US$)
Integrated MCU Architecture
Application Interface
Special Features
TUSB3410 TUSB3210
12    12   
3    3   
3    3   
3.3    3.3   
16    8   
4    32   
-40 to 85
0 to 70   
0 to 70   
2.25 | 1ku    3.15 | 1ku   
8052    8052   
Catalog    Catalog   
Bulk Transfer
Control Transfer
Interrupt Transfer
Remote Wakeup   
Bulk Transfer
Control Transfer
Interrupt Transfer
Remote Wakeup   

Other qualified versions of TUSB3410

Version Part Number Definition
Automotive TUSB3410-Q1 Q100 devices qualified for high-reliability automotive applications targeting zero defects