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XR19L200 Datasheet(PDF) 1 Page - Exar Corporation |
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XR19L200 Datasheet(HTML) 1 Page - Exar Corporation |
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1 / 40 page  Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (510) 668-7000 • FAX (510) 668-7017 • www.exar.com XR19L200 SINGLE CHANNEL INTEGRATED UART AND RS-232 TRANSCEIVER MAY 2007 REV. 1.0.1 GENERAL DESCRIPTION The XR19L200 (L200) is a highly integrated device that combines a single channel Universal Asynchronous Receiver and Transmitter (UART) and an RS-232 transceiver. The L200 is designed to operate with a single 3.3V or 5V power supply. The L200 is fully compliant with EIA/TIA-232-F Standards from a +3.0V to +5.5V power supply. The device operates at 250 Kbps data rate with worst case 3K ohms load. Both RS-232 driver outputs and receiver inputs can operate in harsh electrical environments of +/-15V without damage and can survive multiple +/-15kV ESD on the RS-232 lines, while maintaining RS-232 output levels. The L200 operates in three different modes: Awake, Partial Sleep, and Full Sleep. Each mode can be invoked via hardware or software. In the Awake mode, all functions are active. In the Partial Sleep mode, the internal crystal oscillator or charge pump is turned off. In Full Sleep mode, the internal crystal oscillator and the charge pump is shut down. All the RS-232 receivers remain active in any of these four modes. APPLICATIONS • Battery-Powered Equipment • Handheld and Mobile Devices • Handheld Terminals • Industrial Peripheral Interfaces • Point-of-Sale (POS) Systems FEATURES • Meets true EIA/TIA-232-F Standards from a 3.0 V to 5.5V operation • Up to 250 Kbps data transmission rate • 45us 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 • Software compatible with industry standard 16550 UART • Intel/Motorola bus select • Quarter-modem interface (TXD, RXD) • Sleep modes to conserve battery power • Wake-up interrupt upon exiting low power modes FIGURE 1. BLOCK DIAGRAM XR19L200 UART RS-232 Transceiver A2:A0 D7:D0 IOR# IOW# (R/W#) CS# INT (IRQ#) RESET (RESET#) I/M# Crystal Osc/Buffer BRG 16 Byte TX FIFO 16 Byte RX FIFO Modem I/Os TX RX Charge Pump TXD 5K RXD *5 V Tolerant Inputs VREF+ VREF- |
Similar Part No. - XR19L200_07 |
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Similar Description - XR19L200_07 |
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