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XR68C192CV Datasheet(PDF) 1 Page - Exar Corporation |
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XR68C192CV Datasheet(HTML) 1 Page - Exar Corporation |
1 / 32 page EXAR Corporation, 48720 Kato Road, Fremont, CA 94538 • (510) 668-7000 • FAX (510) 668-7017 XR68C92/192 Rev. P2.10 PLCC Package DUAL UNIVERSAL ASYNCHRONOUS RECEIVER AND TRANSMITTER DESCRIPTION The XR68C92/192 is a Dual Universal Asynchronous Receiver and Transmitter with 8 (XR68C92) or 16 (XR68C192) bytes of transmit and receive FIFOs. The XR68C92/192 is pin-to-pin and functionally compatible to the XR68C681 and Philips SCC68681 UART with additional features. The operating speed of the receiver and transmitter can be selected independently from a table of twenty four 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 •Pin to pin and functionally compatible to XR68C681 and SCC68692 •Full duplex transmit and receive operation •8 bytes of transmit/receive FIFOs (XR68C92) •16 bytes of transmit/receive FIFOs (XR68C192) •Programmable character lengths (5, 6, 7, 8) •Parity, framing, and over run error detection •Programmable 16-bit timer/counter •On-chip crystal oscillator •Single interrupt output with eight selectable interrupt- ing conditions •External 1X or 16X clock •Data rate up to 1Mbps •Independent transmit and receive baud rates from 50bps to 230.4kbps •6 General purpose inputs •8 General purpose outputs •TTL compatible inputs, outputs •4 Transmit/receive trigger levels •Watch dog timer •Multi-drop mode compatible with 8051 nine bit mode •3.3 or 5 volts operation •Loopback modes •Power down mode ORDERING INFORMATION Part number Pins Package Operating temperature XR68C92CP 40 PDIP 0° C to + 70° C XR68C92CJ 44 PLCC 0° C to + 70° C XR68C92CV 44 TQFP 0° C to + 70° C XR68C92IP 40 PDIP -40° C to + 85° C XR68C92IJ 44 PLCC -40° C to + 85° C XR68C92IV 44 TQFP -40° C to + 85° C Part number Pins PackageOperating temperature XR68C192CP 40 PDIP 0° C to + 70° C XR68C192CJ 44 PLCC 0° C to + 70° C XR68C192CV 44 TQFP 0° C to + 70° C XR68C192IP 40 PDIP -40° C to + 85° C XR68C192IJ 44 PLCC -40° C to + 85° C XR68C192IV 44 TQFP -40° C to + 85° C May 2000 www.exar.com 7 8 9 10 11 12 13 14 15 16 17 39 38 37 36 35 34 33 32 31 30 29 A4 IP 0 R/-W -D T A C K RXB N.C. TX B OP 1 OP 3 OP 5 OP 7 -C S -R ES ET XT A L 2 XT A L 1 RXA N.C. TX A OP 0 OP 2 OP 4 OP 6 XR 68 C 9 2 X R 68 C 1 92 |
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