Product category: Communications ICs (Wired)
News Release from: Nu Horizons Electronics Corp | Subject: Exar XR20V2170
Edited by the Electronicstalk Editorial Team on 23 October 2007
UARTs take interfaces and RS232 onboard
Universal asynchronous receivers and transmitters with integral I2C/SPI interfaces and RS232 transceivers reduce bill of materials, component count and cost
Available from stock at Nu Horizons Electronics, the Exar XR20V2170 (single-channel) and XR20V2172 (dual-channel) are universal asynchronous receivers and transmitters (UARTs) with integral I2C/SPI interfaces and RS232 transceivers. The devices reduce bill of materials, component count and cost when connecting microcontroller-based systems to the outside world via RS232 links.
This article was originally published on Electronicstalk on 23 October 2007 at 8.00am (UK)
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The I2C or SPI interface is software selectable and the RS232 pins are ESD protected.
In both devices the full-featured UART has a fractional baud rate generator and transmit and receive FIFOs of 64byte.
Each has 16 selectable transmitter and receiver FIFO trigger levels, automatic hardware and software flow control, general purpose I/Os and a full modem interface.
The single channel XR20V2170 version supports datarates up to 250Kbit/s, and the dual-channel XR20V2172 version operates at up to 1Mbit/s.
Both versions feature an automatic sleep mode to minimise power consumption, making them suitable for portable, battery-powered applications, as well as factory automation and process controls.
Both meet true EIA/TIA-232-F standards.
The XR20V2170 comes in a 40-QFN package and operates from 2.97 to 3.63V.
The XR20V2172 has a 64-QFN package with an operating voltage range of 3.3 to 5.5V.
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