XR21V1410 is an enhanced Universal Asynchronous Receiver and Transmitter (UART) with a USB interface.
The XR21V1410 is a full‑speed USB 2.0 compliant UART with an internal 48 MHz clock, eliminating the need for an external crystal. It features a 128‑byte TX FIFO, a 384‑byte RX FIFO, and automatic transceiver direction control for half‑duplex RS‑485 applications.
Designed for portable appliances, dongles, battery‑operated devices, and industrial automation, the device operates from a 2.97‑3.63 V supply, offers 5 V tolerant inputs, and is available in a 16‑pin QFN package. The datasheet includes pin assignments, USB and I²C interface details, and configuration options via EEPROM.
| USB data rate | 12 Mbps |
|---|---|
| Internal clock | 48 MHz |
| Operating voltage | 2.97 V to 3.63 V |
| Input tolerance | 5 V tolerant |
| Package | 16‑pin QFN |
| TX FIFO size | 128 bytes |
| RX FIFO size | 384 bytes |
| Operating temperature | -40 °C to +85 °C |
| USB Vendor ID | 0x04E2 |
| USB Product ID | 0x1410 |
| I²C EEPROM address | 0xA0 |
| GPIO count | 6 |
It supports a 12 Mbps full‑speed USB 2.0 data rate.
The device provides six general‑purpose I/O pins.
It operates from a single 2.97 V to 3.63 V power supply.
The default USB Vendor ID is 0x04E2.