XR16L2751数据手册开发板套件编程器的评估演示板及套件规格书PDF

描述 Description

The XR16L2751 UART (Universal Asynchronous Receiver Transmitter) is a dual-channel, 2.25V to 5.5V supply product with 5V tolerant inputs. It has a selectable Intel or Motorola data bus interface, and its pin-out is comparable to the ST16C2550CQ and XR16C2850CM. It has a PowerSave feature in sleep mode; this isolates the data bus interface from other bus activities that could cause a wasteful power drain. The PowerSave feature also eliminates the requirement for external buffers, which can reduce cost and board space.
Several device family features can enable more data byte transfer per interrupt service -- this can lower CPU bandwidth requirements. The programmable TX and RX FIFO interrupt trigger levels, and FIFO counters, further reduce the interrupt service period. Additionally, the automatic hardware (RTS/CTS) and software (Xon/Xoff) flow control (with auto RTS hysteresis) eliminates data loss and re-transmission, which can increase data throughput.
Data rates of up to 6.125Mbps at 5V, 4Mbps at 3.3V and 3Mbps at 2.5V are supported at 8x sampling clock rate. The device supports on-chip crystal oscillator or external clock inputs. The 2751 is offered in a low profile 48-pin TQFP package in commercial and industrial temperature grade.
For UART technical support or to obtain an IBIS model for this product, please email Exar's UART Technical Support group.

特性 Features

·Support data rates up to 6.125Mbps at 5.0V, 4 Mbps at 3.3V, and 3 Mbps at 2.5V ·Transmit and receive FIFO level counters·Automatic Sleep-mode·Automatic Xon/Xoff software flow control·Data rate up to 6.25 Mbps·Infrared (IrDA 1.0) data encoder/decoder·Programmable Tx and Rx FIFO trigger levels·Automatic RTS/CTS·Pb-Free, RoHS Compliant Versions Offered

应用 Application

·Portable Appliances·Factory Automation and Process control·Cellular Data Devices·Ethernet Network Routers·Telecommunications Network Routers