XR20M1170 I2C/SPI UART with 64-Byte FIFO Ideal for High Speed Data Transmission
The XR20M11701(M1170) is a high performance universal asynchronous receiver and transmitter (UART) with 64 byteTX and RX FIFOs and a selectable I2C/SPI slave interface.The M1170 operates from 1.62 to 3.63 volts. The enhanced features in the M1170 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 16selectable 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 M1170 is available in 28-pin QFN, 24-pin QFN, 16-pin QFN, 24-pin TSSOP and 16-pinTSSOP packages. The 28-pin QFN package has the EN485# and ENIR# pins to allow the UART to power-up in the Auto RS485mode or the Infrared mode.
The M1170 is designed to work with low supply voltage and high performance data communication systems that require fast data processing time. Increased performance is realized in the M1170 bythe larger transmit and receive FIFOs, FIFO trigger level control and automatic flow control mechanism. This allows the external processor to handle more networking tasks within a given time.This increases the service interval giving the external CPU additional time for other applications and reduces the overall UART interrupt servicing time. In addition, the programmable FIFO level trigger interrupt and automatic hardware/software flow control is uniquely provided for maximum data throughput performance especially when operating in a multi-channel system.The combination of the above greatly reduces the CPU's bandwidth requirement, increases performance, and reduces power consumption.
The M1170 supports maximum data rates of 16 Mbps at 3.3V with4X internal sampling clock rate, 8 Mbps at 3.3V with 8X sampling clock rate, and 4 Mbps at 3.3V with 16X internal sampling clock rate. The device can operate with an external 24 MHz crystal on pins XTAL1 and XTAL2, or external clock source of up to 64 MHz on XTAL1 pin.
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XR20M1170 、 XR20M1170IL16 、 XR20M1170IL24 、 XR20M1170IL28 、 XR20M1170IG16 、 XR20M1170IG24 |
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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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16-pin QFN;24-pin QFN;28-pin QFN;16-Lead TSSOP;24-Lead TSSOP |
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English Chinese Chinese and English Japanese |
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2017/12/26 |
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298 KB |
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