XR19L200IL32-F MaxLinear

XR19L200 SINGLE CHANNEL INTEGRATED UART AND RS-232 TRANSCEIVER JULY 2007 REV. 1.0.2 APPLICATIONS GENERAL DESCRIPTION Battery-Powered Equipment The XR19L200 (L200) is a highly integrated device that combines a single channel Universal Asynchronous Handheld and Mobile Devices Receiver and Transmitter (UART) and an RS-232 Handheld Terminals transceiver. The L200 is designed to operate with a single Industrial Peripheral Interfaces 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 Point-of-Sale (POS) Systems supply. The device operates at 250 Kbps data rate with FEATURES worst case 3K ohms load. Both RS-232 driver outputs and receiver inputs can operate in harsh electrical environments Meets true EIA/TIA-232-F Standards from a 3.0 V to 5.5V of +/-15V without damage and can survive multiple +/-15kV operation ESD on the RS-232 lines, while maintaining RS-232 output levels. Up to 250 Kbps data transmission rate The L200 operates in three different modes: Awake, Partial 45us sleep mode exit (charge pump to full power) Sleep, and Full Sleep. Each mode can be invoked via ESD protection for RS-232 I/O pins at hardware or software. In the Awake mode, all functions are +/-15kV - Human Body Model active. In the Partial Sleep mode, the internal crystal oscillator or charge pump is turned off. In Full Sleep mode, +/-15kV - IEC 61000-4-2, Air-Gap Discharge the internal crystal oscillator and the charge pump is shut +/- 8kV - IEC 61000-4-2, Contact Discharge down. All the RS-232 receivers remain active in any of Software compatible with industry standard 16550 UART these four modes. 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 VREF+ Crystal BRG Charge Pump Osc/Buffer A2:A0 VREF- 16 Byte D7:D0 TX FIFO TX TXD IOR 16 Byte RX RXD 5K IOW (R/W ) RX FIFO CS INT (IRQ ) RESET (RESET ) Modem I/Os I/M *5 V Tolerant Inputs UART RS-232 Transceiver XR19L200 Exar Corporation 48720 Kato Road, Fremont CA, 94538 (510) 668-7000 FAX (510) 668-7017 www.exar.com Intel or Motorola Bus Interface UART Registers XTAL1 XTAL2 VCC (3.0 to 5.5V) GND ACP C2+ C2- C1+ C1-XR19L200 SINGLE CHANNEL INTEGRATED UART AND RS-232 TRANSCEIVER REV. 1.0.2 FIGURE 2. PIN OUT OF THE DEVICE 32 31 30 29 28 27 26 25 32 31 30 29 28 27 26 25 VCC RXD 1 24 C1+ RXD C1+ 1 24 2 23 I/M RESET I/M 2 23 RESET D5 3 XR19L200 22 GND D5 3 XR19L200 22 GND GND 4 21 INT GND 4 21 IRQ GND Intel Bus Mode Motorola Bus Mode D6 5 D6 5 20 A0 20 A0 32-pin QFN 32-pin QFN D7 6 D7 6 19 A1 19 A1 CS 7 CS 7 18 A2 18 A2 TXD 8 8 17 TXD 17 VREF- VREF - 15 16 9 10 11 12 13 14 91011121314 15 16 ORDERING INFORMATION PART NUMBER PACKAGE OPERATING TEMPERATURE RANGE DEVICE STATUS XR19L200IL32 32-QFN -40C to +85C Active 2 D4 XTAL1 XTAL2 D3 IOW D2 ACP D1 D0 GND VCC IOR VREF+ C2+ C1 - C2- D4 XTAL1 XTAL2 D3 R/W D2 ACP D1 D0 GND NC VCC VREF+ C2+ C1 - C2-