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XR20M1170G16-0B Datasheet(PDF) 1 Page - Exar Corporation |
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XR20M1170G16-0B Datasheet(HTML) 1 Page - Exar Corporation |
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1 / 56 page  Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (510) 668-7000 • FAX (510) 668-7017 • www.exar.com XR20M1170 I2C/SPI UART WITH 64-BYTE FIFO JULY 2012 REV. 1.1.0 GENERAL DESCRIPTION The XR20M11701 (M1170) is a high performance universal asynchronous receiver and transmitter (UART) with 64 byte TX 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, an 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 M1170 is available in the 24-pin QFN, 16-pin QFN, 24-pin TSSOP and 16- pin TSSOP packages. NOTE: 1 Covered by U.S. Patent #5,649,122 APPLICATIONS • Portable Appliances • Battery-Operated Devices • Cellular Data Devices • Factory Automation and Process Controls FEATURES • 1.62 to 3.6 Volt Operation • Selectable I2C/SPI Interface • SPI clock frequency up to ■ 18 MHz at 3.3 V ■ 16 MHz at 2.5 V ■ 8 MHz at 1.8 V • Full-featured UART ■ Data rate of up to 16 Mbps at 3.3 V ■ Data rate of up to 12.5 Mbps at 2.5 V ■ Data rate of up to 8 Mbps at 1.8 V ■ 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 (< 15 uA at 3.3V) ■ General Purpose I/Os ■ Full modem interface • Crystal oscillator (up to 24MHz) or external clock (up to 64MHz) input • 24-QFN, 16-QFN, 24-TSSOP, 16-TSSOP packages FIGURE 1. XR20M1170 BLOCK DIAGRAM I2C/SPI Interface I2C/SPI# SO A1/SI A0/CS# SCL SDA IRQ# Crystal Osc/Buffer BRG UART Regs XTAL2 XTAL1 64 Byte TX FIFO GPIOs TX RX CTS# RTS# GPIO[7:0] 1.62V – 3.63V VCC 64 Byte RX FIFO |
Similar Part No. - XR20M1170G16-0B |
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Similar Description - XR20M1170G16-0B |
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