ST16C654

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




Application

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




Pinout






Specifications

Power Supply Range Voltage at Any Pin Operating Temperature Storage Temperature Package Dissipation

7 Volts GND-0.3 V to 7 V -40° to +85 -65° to +150 500 mW

Specifications
CH	4
CPUInterface	Intel or Motorola
Data Rate@5/3.3/2.5V	1.5/0.5/na
Tx/RxFIFO(Bytes)	64/64
Tx/RxFIFOCtrs	No
Tx/RxFIFOINT Trig	4 Levels/ 4 Levels
AutoRTS/CTS	Yes
IrDaSup	Yes
5VTolInputs	No
Sup V	2.97 - 5.5
Pkgs	PLCC-68, QFP-100, LQFP-64

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. An internal loopback capability allows onboard diagnostics. The 654 is available in 64 pin TQFP, 68 pin PLCC and 100 pin QFP packages. The 64 pin package only offers the 16 mode interface, but the 68 and 100 pin packages offer an additional 68 mode interface which allows easy integration with Motorola processors. The ST16C654CQ64 (64 pin) offers three state interrupt output while the ST16C654DCQ64 provides continuous interrupt output. The 100 pin package provides additional FIFO status outputs (TXRDY# and RXRDY# A-D), separate infrared transmit data outputs (IRTX A-D) and channel C external clock input (CHCCLK). The ST16C654/654D is compatible with the industry standard ST16C454 and ST16C654/554D.