XR16M2651

www.DataSheet4U.com MAY 2007 XR16M2651 HIGH PERFORMANCE DUART WITH 32-BYTE FIFO AND POWERSAVE FEATURE REV. 1.0.2 GENERAL DESCRIPTION The XR16M26511 (M2651) is a high performance dual universal asynchronous receiver and transmitter (UART) with 32 byte TX and RX FIFOs. The device operates from 1.62 to 3.63 volts and is pin-to-pin and software compatible to the XR16V2551 and XR16L2551. The device includes 2 additional capabilities over the XR16M2650: Intel and Motorola data bus selection and a “PowerSave” mode to minimize the sleep current. It supports Exar’s enhanced features of selectable FIFO trigger level, automatic hardware (RTS/CTS) and software flow control, and a complete modem interface. An internal loopback capability allows system diagnostics. Independent programmable fractional 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 M2651 is available in 48-pin TQFP and 32pin QFN packages. NOTE: 1 Covered by U.S. Patent #5,649,122 FEATURES 1.62 to 3.63 Volt Operation Pin-to-pin and software compatible to Exar’s XR16L2551, XR16V2551 and XR16M2551 Two independent UART channels ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ Register set is 16550 compatible Data rate of up to 16 Mbps at 3.3 V Data rate of up to 12.5 Mbps at 2.5 V Data rate of up to 8 Mbps at 1.8V Fractional Baud Rate Generator Transmit and Receive FIFOs of 32 bytes Selectable TX and RX FIFO Trigger Levels Automatic Hardware (RTS/CTS) Flow Control ...