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XR16V2650 Datasheet(PDF) 1 Page - Exar Corporation |
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XR16V2650 Datasheet(HTML) 1 Page - Exar Corporation |
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1 / 47 page  Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (510) 668-7000 • FAX (510) 668-7017 • www.exar.com XR16V2650 HIGH PERFORMANCE DUART WITH 32-BYTE FIFO MAY 2007 REV. 1.0.2 GENERAL DESCRIPTION The XR16V26501 (V2650) is a high performance dual universal asynchronous receiver and transmitter (UART) with 32 bytes TX and RX FIFOs. The device operates from 2.25 to 3.6 volts with 5 Volt tolerant inputs and is pin-to-pin compatible to Exar’s ST16C2550, XR16C2550 and XR16V2550. The V2650 register set is compatible to the ST16C2550, the XR16L2550 and the XR16V2550. It supports Exar’s enhanced features of selectable FIFO trigger level, automatic hardware (RTS/CTS) and software 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. Independent programmable baud rate generators are provided in each channel to select data rates up to 16 Mbps at 3.3 Volt with 4X sampling clock. The V2650 is available in 48-pin TQFP and 32-pin QFN packages. NOTE: 1 Covered by U.S. Patent #5,649,122 APPLICATIONS • Portable Appliances • Telecommunication Network Routers • Ethernet Network Routers • Cellular Data Devices • Factory Automation and Process Controls FEATURES • 2.25 to 3.6 Volt Operation • 5 Volt Tolerant Inputs • Pin-to-pin compatible to ST16C2550, XR16C2550, XR16L2550 and XR16V2550 in the 48-TQFP package • Two independent UART channels ■ Register set compatible to XR16V2550 ■ Data rate of up to 16 Mbps at 3.3 V, and 12.5 Mbps at 2.5 V with 4X sampling rate ■ Fractional Baud Rate Generator ■ Transmit and Receive FIFOs of 32 bytes ■ Selectable TX and RX FIFO Trigger Levels ■ Automatic Hardware (RTS/CTS) Flow Control ■ Automatic Software (Xon/Xoff) Flow Control ■ Wireless Infrared (IrDA 1.0) Encoder/Decoder ■ Automatic sleep mode ■ Full modem interface • Device Identification and Revision • Crystal oscillator (up to 32MHz) or external clock (up to 64MHz) input • 48-TQFP and 32-QFN packages FIGURE 1. XR16V2650 BLOCK DIAGRAM XTAL1 XTAL2 Crystal Osc/Buffer TXA, RXA, DTRA#, DSRA#, RTSA#, DTSA#, CDA#, RIA#, OP2A# 8-bit Data Bus Interface UART Channel A 32 Byte TX FIFO BRG IR ENDEC TX & RX UART Regs 2.25 to 3.6 Volt VCC GND * 5 Volt Tolerant Inputs TXB, RXB, DTRB#, DSRB#, RTSB#, CTSB#, CDB#, RIB#, OP2B# UART Channel B (same as Channel A) A2:A0 D7:D0 CSA# CSB# INTA INTB IOW# IOR# Reset TXRDYA# TXRDYB# RXRDYA# RXRDYB# 32 Byte RX FIFO |
Similar Part No. - XR16V2650_07 |
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Similar Description - XR16V2650_07 |
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