EXAR, the market leader, offers the industry's broadest line-up of
UART and serial protocol transceivers solutions.
With over 200 devices, wide 2.25 to 5.5V power supply range, 1 to 128 bytes of FIFO and compliance with the universal 3.3/5V PCI, Intel and Motorola bus interfaces, including single protocol ICs that support RS-232, RS-422 or RS-485 as well as dual and multi-protocol ICs that support from 2 to 8 of the most popular interface standards with a single IC, Exar has already done the difficult work for you.
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
Features
- 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