XR20V2170
Overview
Information | I²C/SPI UART with 64-Byte FIFO and Integrated RS-232 Transceiver |
---|---|
Data Bus Interface | I2C/SPI |
Max Data Rate 3.3V (Mbps) | 0.25 |
Max Data Rate 2.5V (Mbps) | na |
Max Data Rate 1.8V (Mbps) | na |
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) | 2.97 to 3.63 |
FIFO Level Counters | ✔ |
5V Tolerant Inputs | |
Max UART/GPIO Input Voltage (V) | |
Max UART/GPIO Output Voltage (V) | |
Tx/Rx FIFO (Bytes) | 64/64 |
Package | QFN-40 |
No. of GPIOs | |
Integrated Level Shifters | |
Program. Trigger Levels | ✔ |
Temperature Range (°C) | -40 to 85 |
# of Channels | 1 |
The XR20V2170¹ (V2170) is a high performance universal asynchronous receiver and transmitter (UART) with 64 byte TX and RX FIFOs, a selectable I²C/SPI slave interface and RS232 transceiver. The V2170 operates from 2.25 to 3.63 volts. It is software compatible to the SC16CIS760/750/740, but with additional features such as a programmable fractional baud rate generator, and 8X and 4X sampling rate that allows for a maximum baud rate of 1 Mbps at 3.3V. The standard features include 16 selectable TX and RX FIFO trigger levels, automatic hardware (RTS/CTS) and software (Xon/Xoff) flow control, and a complete modem interface. Onboard registers provide the user with operational status and data error flags. An internal loopback capability allows system diagnostics. The V2170 is available in the 40-pin QFN.
NOTE: ¹Covered by U.S. Patent #5,649,122
- 2.25 to 3.6 Volt Operation
- S/W compatible to Philips' SC16IS760/750/740
- Selectable I²C/SPI Interface
- ESD protection for RS-232 I/O pins at
- +/-15kV - Human Body Model
- +/-15kV - IEC 61000-4-2, Air-Gap Discharge
- +/- 8kV - IEC 61000-4-2, Contact Discharge
- Full-featured UART
- Data rate of up to 1 Mbps at 3.3V
- Data rate of up to 1 Mbps at 2.5V
- Fractional Baud Rate Generator
- Transmit and Receive FIFOs of 64 bytes
- 16 Selectable TX and RX FIFO Trigger Levels
- Automatic Hardware (RTS/CTS) Flow Control
- Automatic Software (Xon/Xoff) Flow Control
- Halt and Resume Transmission Control
- Automatic RS-485 Half-duplex Direction Control Output via RTS#
- Automatic sleep mode (< 15 uA at 3.3V)
- General Purpose I/Os
- Full modem interface
- Crystal oscillator (up to 24MHz) or external clock (up to 64MHz) input
- 40-QFN packages
- Pb-Free, RoHS Compliant Versions Offered
- Portable Appliances
- Battery-Operated Devices
- Cellular Data Devices
- Factory Automation and Process Controls
Documentation & Design Tools
Type | Title | Version | Date | File Size |
---|---|---|---|---|
Application Notes | AN-204, UART Sleep Mode | 1.0.0 | June 2010 | 515.8 KB |
Application Notes | DAN-189, MaxLinear UARTs in GPS Applications | 1.0.0 | April 2008 | 139 KB |
Schematics & Design Files | I2C/SPI Eval Board Schematic | 1.1.0 | July 2007 | 83.9 KB |
Software: Drivers | Linux 3.x.x | 1.2.0 | February 2016 | 12.5 KB |
Product Brochures | Interface Brochure | October 2019 | 1.3 MB |
Parts & Purchasing
Part Number | Pkg Code | Min Temp | Max Temp | Status | Suggested Replacement | PDN |
---|---|---|---|---|---|---|
XR20V2170IL40-F | QFN40 6x6 OPT3 | -40 | 85 | OBS | XR20M1170IL16-F ,SP3243EUCR-L | |
XR20V2170IL40TR-F | QFN40 6x6 OPT3 | -40 | 85 | OBS | XR20M1170IL16TR-F ,SP3243EUCR-L/TR |
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
Notifications
FAQs & Support
Search our list of FAQs for answers to common technical questions.
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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.
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.
- 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.
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.
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.