Overview
Information | 2.5V, 3.3V and 5V Low Power UART with 32-Byte FIFO |
---|---|
Data Bus Interface | Intel, Motorola |
# of Channels | 1 |
Max Data Rate 5V (Mbps) | 3.125 |
Max Data Rate 3.3V (Mbps) | 2 |
Max Data Rate 2.5V (Mbps) | 1 |
Max Data Rate 1.8V (Mbps) | na |
Tx FIFO (Bytes) | 16 |
Rx FIFO (Bytes) | 16 |
Auto Flow Control | ✔ |
Auto RS-485 Half-Duplex Control | |
Multidrop (9-bit) Mode | |
Fractional Baud Rate Generator | |
Power Down Mode | ✔ |
Supply Voltage Range VCC (V) | 2.25 to 5.5 |
Auto RTS/CTS | ✔ |
Package | QFN-32, TQFP-48 |
FIFO Level Counters | |
Selectable/ Programable Trigger Levels | S |
IrDA Sup | ✔ |
5V Tolerant Inputs | ✔ |
Max UART/GPIO Input Voltage (V) | 5.5 |
Max UART/GPIO Output Voltage (V) | VCC |
Temperature Range (°C) | -40 to 85 |
The XR16L580 (L580) is a 2.25 to 5.5 volt Universal Asynchronous Receiver and Transmitter (UART) with 5 volt tolerant inputs and a reduced pin count. It is pin-to-pin and software compatible to industry standard 16C450, 16C550, ST16C580, ST16C650A, and XR16C850 UARTs. It has 16 bytes of TX and RX FIFOs and is capable of operating up to serial data rate of 1 Mbps at 2.25 volt supply voltage. The internal registers is compatible to the 16C550 register set plus enhanced registers for additional features to support today’s high bandwidth data communication needs. The enhanced features include Intel or Motorola data bus interface to match your CPU interface, automatic hardware and software flow control to prevent data loss, selectable RX and TX trigger levels for more efficient interrupt service, wireless infrared (IrDA) encoder/decoder for wireless applications and a unique Power-Save mode to increase battery operating time. The device comes in the 48-TQFP and very small 32-QFN, 28-QFN and 24-QFN packages in industrial temperature range.
- Smallest Full Featured UART
- 2.25V to 5.5V Supply Voltage
- 5V Tolerant Inputs (except XTAL1)
- Intel/Motorola Bus Select
- '0 ns' Address Hold Time (TAH and TADH)
- Pin and Software Compatible to industry standard 16C450, 16C550, ST16C580, ST16C650A, and XR16C850 in the 48-TQFP package
- 16-byte Transmit FIFO
- 16-byte Receive FIFO with Errors Flags
- Selectable RX and TX FIFO Trigger Levels
- Automatic Hardware (RTS/CTS) Flow Control
- Automatic Software (Xon/Xoff) Flow Control
- Up to 3.125 Mbps Data Rate at 5V and 2 Mbps at 3.3V and 1 Mbps at 2.25V Operation with External Clock Input
- Infrared (IrDA) Encoder/Decoder
- Complete Modem Interface
- Power-Save Mode to conserve battery power
- Sleep Mode with Wake-up Interrupt
- Small packages: 24-QFN (4x4x0.9mm), 28-QFN (5x5x0.9mm) and 32-QFN (5x5x0.9mm)
- Compatible to standard 48-TQFP packages, without the following signals: IOR, IOW, CS1, CS2, TXRDY#, RXRDY#, RCLK, BAUDOUT#, OP1#, and OP2#
- Industrial Temperature Grade (-40ºC to +85ºC)
- Pb-Free, RoHS Compliant Versions Offered
- Handheld Terminals and Tablets
- Handheld Computers
- Wireless Portable Point-of-Sale Terminals
- Cellular Phones DataPort
- GPS Devices
- Personal Digital Assistants Modules
- Battery Operated Instruments
Documentation & Design Tools
Type | Title | Version | Date | File Size |
---|---|---|---|---|
Data Sheets | XR16L580 SMALLEST 2.25V to 5.5V UART with 16-Byte FIFO and Powersave | 1.4.2 | August 2011 | 963.1 KB |
Application Notes | AN-204, UART Sleep Mode | 1.0.0 | June 2010 | 515.8 KB |
Application Notes | DAN-176, Power-Save Feature: Sleep Current Down to 15µA | 1.0.0 | August 2004 | 42.5 KB |
Application Notes | DAN-136, MaxLinear 16L580 Compared to TI's TL6C550C (48-tqp) | 1.0.0 | November 2003 | 53.6 KB |
Application Notes | DAN-139, XR16L580 Compared to Industry Standard 16550 UART | 1.0.0 | November 2003 | 49 KB |
User Guides & Manuals | Evaluation Board User's Manual | 1.1.0 | October 2003 | 14.3 KB |
Product Flyers | Smallest Single Channel UART | 1.0.0 | May 2006 | 138.3 KB |
Product Brochures | Interface Brochure | R01 | June 2024 | 3.6 MB |
Schematics & Design Files | ISA Eval Board Schematic | 1.2.0 | August 2007 | 81.4 KB |
Schematics & Design Files | PCI Eval Board Schematic | 1.1.0 | July 2007 | 167.8 KB |
Software: Drivers | Linux 2.4 | 1.0 | December 2009 | 907.6 KB |
Software: Drivers | Linux 2.6.13 | 1.0.0 | December 2009 | 10.8 KB |
Software: Drivers | Linux 2.6.18 | 1.0.0 | December 2009 | 12.1 KB |
Software: Drivers | Windows 95 & 98 | 1.0.0.0 | December 2009 | 105.2 KB |
Software: Drivers | Windows NT | 1.0.0.0 | December 2009 | 663.4 KB |
Software: Drivers | Windows XP & 2000 | 1.3.0.0 | December 2009 | 61 KB |
Simulation Models
Package Type | Vcc | Temp | Mode | Version | File |
---|---|---|---|---|---|
QFN | 2.5V | Industrial | Intel | 2 | |
QFN | 2.5V | Industrial | Motorola | 1 | |
QFN | 3.3V | Industrial | Intel | 2 | |
QFN | 3.3V | Industrial | Motorola | 1 | |
QFN | 5V | Industrial | Intel | 2 | |
QFN | 5V | Industrial | Motorola | 1 | |
QFN | 2.5V | Industrial | Intel | 2 | |
QFN | 2.5V | Industrial | Motorola | 1 | |
QFN | 3.3V | Industrial | Intel | 2 | |
QFN | 3.3V | Industrial | Motorola | 1 | |
QFN | 5V | Industrial | Intel | 2 | |
QFN | 5V | Industrial | Motorola | 1 | |
QFN | 2.5V | Industrial | Intel | 2 | |
QFN | 2.5V | Industrial | Motorola | 1 | |
QFN | 3.3V | Industrial | Intel | 2 | |
QFN | 3.3V | Industrial | Motorola | 1 | |
QFN | 5V | Industrial | Intel | 2 | |
QFN | 5V | Industrial | Motorola | 1 | |
TQFP | 2.5V | Industrial | Intel | 2 | |
TQFP | 2.5V | Industrial | Motorola | 1 | |
TQFP | 3.3V | Industrial | Intel | 2 | |
TQFP | 3.3V | Industrial | Motorola | 1 | |
TQFP | 5V | Industrial | Intel | 2 | |
TQFP | 5V | Industrial | Motorola | 1 |
Quality & RoHS
Part Number | RoHS | Exempt | RoHS | Halogen Free | REACH | TSCA | MSL Rating / Peak Reflow | Package |
---|---|---|---|---|---|---|---|
XR16L580IM-F | N | Y | Y | Y | Y | L3 / 260ᵒC | TQFP48 |
XR16L580IL-F | N | Y | Y | Y | Y | L2 / 260ᵒC | QFN32 5x5 OPT3 |
XR16L580ILTR-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 | Order Samples | PDN |
---|---|---|---|---|---|---|---|---|
XR16L580IL | QFN32 5x5 OPT3 | -40 | 85 | OBS | XR16L580IL-F | |||
XR16L580IL-F | QFN32 5x5 OPT3 | -40 | 85 | OBS | XR16M890IL32-F (3.3V/2.5V) | |||
XR16L580IL24 | QFN24 4x4 OPT1 | -40 | 85 | OBS | XR16L580IL24-F | |||
XR16L580IL24-F | QFN24 4x4 OPT1 | -40 | 85 | OBS | XR16L580IL-F | |||
XR16L580IL24TR-F | QFN24 4x4 OPT1 | -40 | 85 | OBS | XR16L580ILTR-F | |||
XR16L580IL28 | QFN28 | -40 | 85 | OBS | XR16L580IL28-F | |||
XR16L580IL28-F | QFN28 | -40 | 85 | OBS | XR16L580IL-F | |||
XR16L580IL28TR-F | QFN28 | -40 | 85 | OBS | XR16L580ILTR-F | |||
XR16L580ILTR | QFN32 5x5 OPT3 | -40 | 85 | OBS | XR16L580ILTR-F | |||
XR16L580ILTR-F | QFN32 5x5 OPT3 | -40 | 85 | OBS | XR16M890IL32TR-F (3.3V/2.5V) | |||
XR16L580IM-F | TQFP48 | -40 | 85 | Active | Order | |||
XR16L580IMTR-F | TQFP48 | -40 | 85 | OBS | XR16L580IM-F |
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.
Packaging
Pkg Code | Details | Quantities | Dimensions |
---|---|---|---|
TQFP48 |
|
|
|
QFN24 4x4 OPT1 |
|
|
|
QFN32 5x5 OPT3 |
|
|
|
Notifications
FAQs & Support
Search our list of FAQs for answers to common technical questions.
For material content, environmental, quality and reliability questions review the Quality tab or visit our Quality page.
For ordering information and general customer service visit our Contact Us page.
Submit a Technical Support Question As a New Question
https://www.exar.com/quality-assurance-and-reliability/lead-free-program
The Parts & Purchasing section of the product page shows the Status of all orderable part numbers for that product. Click Show obsolete parts, to see all EOL or OBS products.
Please check that all the following conditions are satisfied first.
- no interrupts pending (ISR bit-0 = 1)
- modem inputs are not toggling (MSR bits 0-3 = 0)
- RX input pin is idling HIGH • divisor (the value in DLL register) is non-zero
- TX and RX FIFOs are empty
Be sure sleep mode bit has been set to 1. If there are multiple UART channels, the sleep conditions must be true for all channels.
See more on Sleep Mode in AN204 UART Sleep Mode.
Yes. Note: some devices do have powersave mode. If UART goes into powersave mode, then the registers are not accessible.
See more on Sleep Mode in AN204 UART Sleep Mode.
Read LSR register to check whether the UART receives the data or not.
- If LSR value is 0x60, it means that either UART receiver FIFO doesn’t receive the data or the data in receiver FIFO has been read out before the read of LSR.
- If LSR value is 0x00, it means data is still in the THR (clock doesn’t oscillate to transmit data).
- If LSR value is 0xFF, it means either UART is in powersave mode or UART is powered off. For those devices with powersave mode, be sure that UARTS are not in powersave mode.
See more on Sleep Mode in AN204 UART Sleep Mode.
- Check whether the register set can be accessed.
- Check whether the crystal is oscillating fully.
- Check whether the data can be transmitted in internal loopback mode.
See more on Sleep Mode in AN204 UART Sleep Mode.