Low Voltage I²C/SPI UART and Integrated RS-232 Product Family

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XR20M1172

The XR20M1172 (M1172) is a high performance two channel universal asynchronous receiver and transmitter (UART) with 64 byte TX and RX FIFOs and a selectable I²C/SPI slave interface. The M1172 operates from 1.62 to 3.63V. It is software compatible to the SC16CIS762/752, 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 16Mbps 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 M1172 is available in the 32-pin QFN, 28-pin TSSOP and 20-pin TSSOP packages. The 32-pin QFN package has the EN485# and ENIR# pins to allow the UART to power-up in the Auto RS-485 mode or the Infrared mode.

 

FEATURES 1.62 to 3.6V operation S/W compatible to Philips' SC16IS762/752 Selectable I2C/SPI interface Full-featured UART Data rate of up to 16Mbps at 3.3V Data rate of up to 12.5Mbps at 2.5V Data rate of up to 8Mbps at 1.8V 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# Wireless Infrared (IrDA 1.0 and 1.1) encoder/decoder Automatic sleep mode (< 15µA at 3.3V) General purpose I/Os Full modem interface Crystal oscillator (up to 24MHz) or external clock (up to 64MHz) input 32-QFN, 28-TSSOP, 20-TSSOP packages

APPLICATIONS Portable appliances Battery operated devices Cellular data devices Factory automation and process controls

 

 

XR20V2172

The XR20V2172 (V2172) is a high performance two channel universal asynchronous receiver and transmitter (UART) with 64 byte TX and RX FIFOs, a selectable I²C/SPI slave interface and RS232 transceiver. The V2172 operates from 2.97 to 3.63V. The enhanced features in the V2172 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 complete modem interface. Onboard registers provide the user with operational status and data error flags. An internal loopback capability allows system diagnostics. The V2172 is available in the 64-pin QFN.

 

FEATURES Selectable I2C/SPI interface Meets true EIA/TIA-232-F standards from +2.97V to +3.63V operation Data rate up to 1Mbps 45µs sleep mode exit (charge pump to full power) ESD protection for RS-232 I/O pins at +/-15kV - Human Body Model +/-15kV - IEC 1000-4-2, Air-Gap Discharge +/- 8kV - IEC 1000-4-2, 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 64-QFN packages

APPLICATIONS Portable appliances Battery operated devices Cellular data devices Factory automation and process controls

 

 

 Featured Products

Part Number		Description	Data Sheet	App. Notes
XR20M1172IG28		Dual Channel I2C/SPI UART with 64-Byte FIFO 28-Lead TSSOP
XR20M1172IL32-F		Dual Channel I2C/SPI UART with 64-Byte FIFO 32-Pin QFN
XR20V2172IL64-F		Dual Channel I2C/SPI UART with 64-Byte FIFO and Integrated RS-232 Transceiver

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