Datasheet Details
| Part number | XR21B1421 |
|---|---|
| Manufacturer | Exar (now MaxLinear) |
| File Size | 387.20 KB |
| Description | Enhanced 1-Ch Full-Speed USB HID to UART Bridge |
| Datasheet |
 XR21B1421 Datasheet
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General Description
The XR21B1421 is an enhanced Universal Asynchronous Receiver and Transmitter (UART) bridge to HID class USB interface.
The USB interface is fully compliant to the USB 2.0 (Full-Speed) specification with 12 Mbps USB data transfer rate.
Key Features
- ±15kV ESD on USBD+/USBD.
- USB 2.0 Compliant, Full-Speed (12Mbps).
- Unique pre-programmed USB serial number.
- Internally generated 48MHz core clock.
- Enhanced UART features.
- Baud rates up to 12 Mbps.
- Fractional Baud Rate Generator.
- 512-byte TX and 512-byte RX FIFOs.
- Auto Hardware / Software Flow Control.
- Multidrop and Half-Duplex Modes.
- Auto RS-485 Half-Duplex Control.
- Selectable GPIO or Modem.
