XR20V2170
XR20V2170 is I2C/SPI UART manufactured by Exar.
DESCRIPTION
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 2.97 to 3.63 volts. The enhanced features in the V2170 include a programmable fractional baud rate generator, an 8X and 4X sampling rate that allows for a maximum baud rate of 250 Kbps 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 plete 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: 1 Covered by U.S. Patent #5,649,122
FEATURES
- Selectable I2C/SPI Interface
- Meets true EIA/TIA-232-F Standards from +2.97V to +3.63V operation
- Data rate up to 250 Kbps
- 45us sleep mode exit (charge pump to full power)
- ESD protection for RS-232 I/O pins at
- -
- +/-15k V
- Human Body Model +/-15k V
- IEC 61000-4-2, Air-Gap Discharge
+/- 8k V
- IEC 61000-4-2, Contact Discharge
- Full-featured UART
- -
- -
- -
- -
- 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 sleep mode General Purpose I/Os Full modem interface
APPLICATIONS
- Portable Appliances
- Battery-Operated Devices
- Cellular Data Devices
- Factory Automation and Process Controls
FIGURE 1. XR20V2170 BLOCK DIAGRAM
- 40-QFN packages
VCC (2.97
- 3.63V)
XTAL1
XTAL2
C2+
C1+
C2-
C1-
VR EF+ C ry s ta l O s c / B u ffe r 6 4 B y te TX & RX F IF O TX...
