The XR28V384 (V384) is a quad 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 V384 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 V384 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 V384 is available in a 48-pin TQFP 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
- 4 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
- 48-TQFP package (7mm x 7mm)
- Industrial and Embedded PCs
- Factory Automation and Process Controls
- Network Routers
- System Board Designs
Parts & Purchasing
|Part Number||Pkg Code||Min Temp||Max Temp||Status||Buy Now||Order Samples|
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.
Quality & Environmental Data
|Part Number||RoHS | Exempt||RoHS||Halogen Free||REACH||TSCA||MSL Rating / Peak Reflow||Package|
|XR28V384IM48-F||N||Y||Y||Y||Y||L3 / 260ᵒC||TQFP48|
|XR28V384IM48TR-F||N||Y||Y||Y||Y||L3 / 260ᵒC||TQFP48|
Click on the links above to download the Certificate of Non-Use of Hazardous Substances.
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Frequently Asked Questions
Find the product page of the part that you want to get an evaluation board for and click on Parts & Purchasing. Example:
Find the icons under Buy Now or Order Samples:
Click on the Buy Now icon and see who has stock and click on the Buy button:
Alternatively, you can click on the Order Samples
If the icons are missing, then contact Customer Support.
In this example, we looked for XRA1201. Click on part number header or on the link at the bottom of the result. This brings you to the product page. For example:
Click on Parts & Purchasing, highlighted with the blue arrow above. The screen changes to:
Notice the status column and the “Show obsolete parts” link. A legend tells you the definition of the different statuses. Click on the “Show obsolete parts” link to see EOL or OBS part numbers along with the Active part numbers, the legend still present:
Another method to find out if a part is OBS or EOL is to click on SUPPORT at the top:
And then Product Change Notifications:
Type the part into the search, and click on one of the part numbers from the drop down menu. Then you can look for the Product Discontinuation Notice, which generally is at the top of the list, for example:
If you see this, it tells you that this particular orderable part has been discontinued and when the last order date is, or was. If you click on the file, then you can view the notice we sent about this if you purchased the part in the recent past. It may also advise of a replacement part. When an orderable part first becomes discontinued, Product Discontinuation Notices are sent are sent to those who have purchased the parts in the recent past, if purchased directly, with a dated opportunity to place a last order.
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