ST16C654DCQ64(2005) Datasheet PDF - Exar Corporation

GENERAL DESCRIPTION
   The ST16C654/654D1 (654) is an enhanced quad Universal Asynchronous Receiver and Transmitter (UART) each with 64 bytes of transmit and receive FIFOs, transmit and receive FIFO trigger levels, automatic hardware and software flow control, and data rates of up to 1.5 Mbps. Each UART has a set of registers that provide the user with operating status and control, receiver error indications, and modem serial interface controls. Selectable interrupt polarity provides flexibility to meet design requirements. 

FEATURES
● Pin-to-pin compatible with ST16C454, ST16C554
   and TI’s TL16C554AFN and TL16C754BFN
● Intel or Motorola Data Bus Interface select
● Four independent UART channels
   ■ Register Set Compatible to 16C550
   ■ Data rates of up to 1.5 Mbps
   ■ 64 Byte Transmit FIFO
   ■ 64 Byte Receive FIFO with error tags
   ■ 4 Selectable TX and RX FIFO Trigger Levels
   ■ Automatic Hardware (RTS/CTS) Flow Control
   ■ Automatic Software (Xon/Xoff) Flow Control
   ■ Progammable Xon/Xoff characters
   ■ Wireless Infrared (IrDA 1.0) Encoder/Decoder
   ■ Full modem interface
● 2.97V to 5.5V supply operation
● Sleep Mode (200 uA typical)
● Crystal oscillator or external clock input

APPLICATIONS
● Portable Appliances
● Telecommunication Network Routers
● Ethernet Network Routers
● Cellular Data Devices
● Factory Automation and Process Controls