|Information||3.3V Dual LPC UART with 128-Byte FIFO|
|Data Bus Interface||Intel LPC|
|# of Channels||2|
|Max Data Rate (Mbps)||3|
|Tx/Rx FIFO (Bytes)||128/128|
|Auto Flow Control||✔|
|Auto RS-485 Half-Duplex Control||✔|
|Multidrop (9-bit) Mode||✔|
|Power Down Mode||✔|
|5V Tolerant Inputs||✔|
|Supply Voltage Range VCC (V)||3 to 3.6|
|Max UART/GPIO Input Voltage (V)||5.5|
|Max UART/GPIO Output Voltage (V)||VCC|
|Temperature Range (°C)||-40 to 85|
The XR28V382 (V382) is a dual Universal Asynchronous Receiver and Transmitter (UART) for the Intel Low Pin Count (LPC) bus interface. This device can replace or supplement a Super I/O device to add additional serial ports to the system.
The V382 UARTs support any 16-bit I/O address supported by the system. The register set is based on the industry standard 16550 UART, so the V382 operates with standard serial port drivers without requiring a custom driver to be installed.
The 128 byte Transmit and Receive FIFOs reduce CPU overhead and minimize the chance of buffer overflow and data loss. In addition to the 16550 UART registers, there are also Configuration register set where enhanced features such as the 9-bit (multidrop) mode, IrDA mode and the Watchdog Timer can be enabled.
The V382 is available in a 32-pin QFN package.
- 128 Byte Transmit and Receive FIFO
- Compliant to LPC 1.1 Specifications
- -40°C to +85°C Industrial Temp Operation
- Watchdog Timer with WDTOUT# signal
- 2 independent UART channels
- Programmable I/O mapped base addresses
- Data rates up to 3 Mbps
- Selectable RX FIFO interrupt trigger levels
- Auto RS-485 Half-Duplex Control mode
- Programmable character lengths (5, 6, 7, 8) with even, odd, or no parity
- IrDA mode and separate IRTXA# and IRRXA# pins for the first UART channel
- 9-bit (Multidrop) mode
- External 24MHz/48MHz clock
- Single 3.3V Supply Voltage ( ± 10%)
- 5V tolerant inputs
- 32-QFN package (5mm x 5mm)
- Industrial and Embedded PCs
- Factory Automation and Process Controls
- Network Routers
- System Board Designs
Documentation & Design Tools
|Data Sheets||XR28V382 3.3V Dual LPC UART with 128-Byte FIFO||1.0.2||March 2018||2.4 MB|
|Application Notes||DAN-190, MaxLinear UARTs in RS-485 Applications||R01||July 2023||2.4 MB|
|User Guides & Manuals||XR28V384/XR28V382 Evaluation Board User's Manual||R00||August 2020||2.7 MB|
|Errata||XR28V38X Errata||1A||November 2017||641 KB|
|Product Brochures||Interface Brochure||November 2023||3.7 MB|
|Schematics & Design Files||XR28V382-0A Evaluation Board Files: BRD, DSN, BOM, Schematic, Manual||March 2019||1.4 MB|
Quality & RoHS
|Part Number||RoHS | Exempt||RoHS||Halogen Free||REACH||TSCA||MSL Rating / Peak Reflow||Package|
|XR28V382IL32-F||N||Y||Y||Y||Y||L2 / 260ᵒC||QFN32 5x5 OPT3|
|XR28V382IL32TR-F||N||Y||Y||Y||Y||L2 / 260ᵒC||QFN32 5x5 OPT3|
Click on the links above to download the Certificate of Non-Use of Hazardous Substances.
Parts & Purchasing
|Part Number||Pkg Code||Min Temp||Max Temp||Status||Suggested Replacement||Buy Now||PDN|
|XR28V382IL32-F||QFN32 5x5 OPT3||-40||85||EOL|
|XR28V382IL32TR-F||QFN32 5x5 OPT3||-40||85||EOL|
Active - the part is released for sale, standard product.
EOL (End of Life) - the part is no longer being manufactured, there may or may not be inventory still in stock.
CF (Contact Factory) - the part is still active but customers should check with the factory for availability. Longer lead-times may apply.
PRE (Pre-introduction) - the part has not been introduced or the part number is an early version available for sample only.
OBS (Obsolete) - the part is no longer being manufactured and may not be ordered.
NRND (Not Recommended for New Designs) - the part is not recommended for new designs.
FAQs & Support
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MxL UARTs Auto RS-485 Direction Control
This video describes how the automatic RS-485 half-duplex direction control feature in MaxLinear UARTs reduces driver development and frees up CPU/MCU loading. This feature eliminates the need to monitor the status of the UART’s transmit shift register and automatically switches MaxLinear RS-485 transceivers from the transmit mode to the receive mode. This video summarizes the content in application note DAN-190.