XR20M1172 Dual Channel I2C/SPI UART with 64-Byte FIFO
The XR20M11721(M1172) is a high performance two channel universal asynchronous receiver and transmitter(UART) with 64 byte TX and RX FIFOs and a selectableI2C/SPI slave interface. The M1172 operates from 1.62V to 3.63V.Features include a programmable fractional baud rate generator,and 8X and 4X sampling rate that allows for a maximum baud rate of 16 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 M1172 is available in both 32-pin QFN and 28-pin TSSOP packages. The 32-pin QFN package has theEN485# and ENIR# pins to allow the UART to power-up in the Auto RS-485 mode or the Infrared mode.
The XR20M1172 includes features that simplify the hardware and software designs for half-duplex RS-485 and infrared applications.These features can be enabled in the 28-pin TSSOP package by software. The 32-pin QFN offers flexibility to enable these modes in both software and hardware. Enabling the Auto RS-485 or IR mode in the hardware allows the 32-pin QFN device to power up in a state which completely eliminates unwanted noise on the RS-485network or remote IR transceiver.
●Major Features
■1.62V to 3.63V Operation
■Selectable I2C/SPI Interface
■Crystal oscillator (up to 24MHz) or external clock (up to 64MHz) input
■Full-featured UART
■32-QFN and 28-TSSOP packages
■Pb-Free, RoHS Compliant Versions Offered
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[ Portable Appliances ][ Battery-Operated Devices ][ Cellular Data Devices ][ Factory Automation ] |
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Datasheet |
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Please see the document for details |
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32-pin QFN;28-Lead TSSOP |
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English Chinese Chinese and English Japanese |
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2017/12/26 |
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301 KB |
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