The XR16M781 is an Exar 1.62V to 3.63V serial communication chip with a VLIO bus interface and 64-byte FIFO. It supports 3.3V, 2.5V and 1.8V power supplies, with a maximum data transfer rate of 20 Mbps, 16 Mbps and 10 Mbps.
The XR16M781 is a high‑performance single‑channel UART that operates from 1.62 V to 3.63 V and includes a VLIO bus interface. It provides 64 bytes of transmit and receive FIFO memory, automatic hardware and software flow control, and supports data rates up to 20 Mbps.
The device is offered in 24‑pin QFN, 32‑pin QFN, and 25‑pin BGA packages and is suitable for applications such as PDAs, cellular phones, GPS, Bluetooth, and other battery‑operated devices. The datasheet includes pin descriptions, functional block diagrams, serial interface options, and mechanical dimensions.
| Supply voltage range | 1.62 V to 3.63 V |
|---|---|
| FIFO size | 64 bytes (TX and RX) |
| Maximum data rate | 20 Mbps at 3.3 V |
| Operating temperature | -40 °C to +85 °C |
| Available packages | 24‑Pin QFN, 32‑Pin QFN, 25‑Pin BGA |
The UART can operate at up to 20 Mbps when supplied at 3.3 V.
It works from 1.62 V up to 3.63 V.
The device includes 64 bytes of transmit and 64 bytes of receive FIFO.
It is offered in 24‑pin QFN, 32‑pin QFN, and 25‑pin BGA packages.