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XR68C92 Datasheet(PDF) 1 Page - Exar Corporation |
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XR68C92 Datasheet(HTML) 1 Page - Exar Corporation |
1 / 33 page EXAR Corporation, 48720 Kato Road, Fremont, CA 94538 • (510) 668-7000 • FAX (510) 668-7017 XR68C92/192 PLCC Package DESCRIPTION The XR68C92/192 is a Dual Universal Asynchronous Receiver and Transmitter with 8 (XR68C92) / 16 (XR68C192) bytes transmit and receive FIFO. The XR68C92/192 is a pin-to-pin compatible and an improved version of the XR68C681 and the Philips SCC68692 UART with faster data access and other additional features. The operating speed of the receiver and transmitter can be selected independently from a table of eighteen fixed baud rates, a 16X clock derived from a programmable counter/timer, or an external 1X or 16X clock. The baud rate generator and counter/timer can operate directly from a crystal or from external clock input. The XR68C92/192 provides a power-down mode in which the oscillator is stopped but the register contents are retained. The XR68C92/192 is fabricated in an advanced CMOS process to achieve low power and high speed requirements. FEATURES Added features in devices with top marking of "D2" and newer: • 5 volt tolerant inputs • Pin to pin compatible and improved version of the SCC68692 and XR68C681 • Enhanced Multidrop mode operation with separate storage for address and data tags (9th bit) • 8 Bytes transmit/receive FIFO (XR68C92) •16 Bytes transmit/receive FIFO (XR68C192) • Standard baud rates from 50bps to 230.4kbps • Non-standard baud rate of up to 1Mbps • Transmit and Receive trigger levels • Watch dog timer • Programmable clock source for receiver and trans- mitter of each channel • Single interrupt output • 7 Multipurpose inputs, 8 Multipurpose outputs • 2.97 to 5.5 volt operation • Programmable character lengths (5, 6, 7, 8) • Parity, framing, and over run error detection • Programmable 16-bit timer/counter • On-chip crystal oscillator • Powerdownmode DUAL UNIVERSAL ASYNCHRONOUS RECEIVER AND TRANSMITTER August 2005 7 8 9 10 11 12 13 14 15 16 17 39 38 37 36 35 34 33 32 31 30 29 A3 IP0 R/-W -DTACK RXB N.C. TXB OP1 OP3 OP5 OP7 -CS -RESET XTAL2 XTAL1 RXA N.C. TXA OP0 OP2 OP4 OP6 XR68C92 XR68C192 Part number Package Operating temperature Device Status XR68C92CP 40-Lead PDIP 0° C to + 70° C Active. See the XR68C92CV for new designs. XR68C92CJ 44-Lead PLCC 0° C to + 70° C Active XR68C92CV 44-Lead LQFP 0° C to + 70° C Active XR68C92IP 40-Lead PDIP -40° C to + 85° C Active. See the XR68C92IV for new designs. XR68C92IJ 44-Lead PLCC -40° C to + 85° C Active XR68C92IV 44-Lead LQFP -40° C to + 85° C Active XR68C192CJ 44-Lead PLCC 0° C to + 70° C Active XR68C192CV 44-Lead LQFP 0° C to + 70° C Active XR68C192IJ 44-Lead PLCC -40° C to + 85° C Active XR68C192IV 44-Lead LQFP -40° C to + 85° C Active ORDERING INFORMATION Rev. 1.33 |
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