特性 Features

- 1.62V to 3.6V with 5V Tolerant Serial Inputs

- Programmable Sleep Mode with automatic wake-up

- Intel or Motorola Data Bus Interface select

- Each UART is independently controlled with:

- 16C550 Compatible Register Set

- 64-byte Transmit and Receive FIFOs

- Transmit and Receive FIFO Level Counters

- Programmable TX and RX FIFO Trigger Levels for

DMA and Interrupt Generation

- Programmable Receive FIFO Trigger Levels for

Software/Hardware Flow Control

- Programmable hysteresis(Table A-D) for Software/

Hardware Flow Control

- Automatic RTS/CTS Flow Control

- Automatic Xon/Xoff Software Flow Control with

Optional Data Flow Resume by Xon Any Character

- DMA Signaling Capability for both Received and

Transmitted Data

- RS485 HDX Control Output

- RS485 auto address detection

- Infrared (IrDA 1.0/1.1) Data Encoder/Decoder

- Programmable Data Rate with Prescaler

- Up to 16 Mbps Serial Data Rate with 64MHz external clock

input

- Crystal oscillator(up to 24MHz) or external clock(up to

80MHz) input

- Built in Power-On-Reset circuit

- Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)

- Halogen and Antimony Free. “Green” Device (Note 3)

Application

- Remote Access Servers

- Ethernet Network to Serial Ports

- Network Management

- Factory Automation and Process Control

- Point-of-Sale Systems

- Multi-port RS-232/RS-422/RS-485 Cards