XR68C92 Datasheet | Exar

DESCRIPTION XR68C92/192 DUAL UNIVERSAL ASYNCHRONOUS RECEIVER AND TRANSMITTER August 2005 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 patible 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 patible 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 - Power down mode ORDERING INFORMATION A3 7 IP0 8 R/-W 9 -DTACK 10 RXB 11 N.C. 12 TXB 13 OP1 14 OP3 15 OP5 16 OP7 17 PLCC Package XR68C92 XR68C192 Part number Package XR68C92CP 40-Lead PDIP XR68C92CJ 44-Lead PLCC XR68C92CV...