SC16C654BIBM,151

SC16C654BIBM,151 2. Features

SC16C654BIBM,151 1. General description

The SC16C654B/654DB is a Quad Universal Asynchronous Receiver and Transmitter(QUART) used for serial data communications. Its principal function is to convert paralleldata into serial data and vice versa. The UART can handle serial data rates up to 5 Mbit/s.It comes with an Intel or Motorola interface.The SC16C654B/654DB is pin compatible with the ST16C654 and TL16C754 and it willpower-up to be functionally equivalent to the 16C454. Programming of control registersenables the added features of the SC16C654B/654DB. Some of these added features arethe 64-byte receive and transmit FIFOs, automatic hardware or software flow control andinfrared encoding/decoding. The selectable auto-flow control feature significantly reducessoftware overload and increases system efficiency while in FIFO mode by automaticallycontrolling serial data flow using RTS output and CTS input signals. TheSC16C654B/654DB also provides DMA mode data transfers through FIFO trigger levelsand the TXRDY and RXRDY signals. (TXRDY and RXRDY signals are not available in theHVQFN48 package.) On-board status registers provide the user with error indications,operational status, and modem interface control. System interrupts may be tailored tomeet user requirements. An internal loop-back capability allows on-board diagnostics.The SC16C654B/654DB operates at 5 V, 3.3 V and 2.5 V, and the industrial temperaturerange, and is available in plastic PLCC68, LQFP64, HVQFN48 and LFBGA64 packages.On the HVQFN48 package, only channel C has all the modem pins. Channel A andchannel B have only RTS and CTS pins, and channel D does not have any modem pin.n 4 channel UARTn 5 V, 3.3 V and 2.5 V operationn Industrial temperature range (- 40 (cid:176) C to +85 (cid:176) C)n SC16C654B is pin and software compatible with the industry-standardST16C454/554, ST16C654, ST68C454/554, TL16C554n SC16C654DB is pin and software compatible with ST16C654D, and softwarecompatible with ST16C454/554, ST68C454/554, TL16C554n Up to 5 Mbit/s data rate at 5 V and 3.3 V and 3 Mbit/s at 2.5 Vn 5 V tolerant inputsn 64-byte transmit FIFOn 64-byte receive FIFO with error flagsn Automatic software (Xon/Xoff)/hardware (RTS/CTS) flow controln Programmable Xon/Xoff characters