SC16C754 Datasheet | NXP Semiconductors

Description The SC16C754 is a quad universal asynchronous receiver/transmitter (UART) with 64-byte FIFOs, automatic hardware/software flow control, and data rates up to 5 Mbits/s (3.3 V and 5 V). The SC16C754 offers enhanced features . It has a transmission control register (TCR) that stores receiver FIFO threshold levels to start/stop transmission during hardware and software flow control. With the FIFO RDY register, the software gets the status of TXRDY/RXRDY for all four ports in one access. On-chip status registers provide the user with error indications, operational status, and modem interface control. System interrupts may be tailored to meet user requirements. An internal loop-back capability allows on-board diagnostics. The UART transmits data, sent to it over the peripheral 8-bit bus, on the TX signal and receives characters on the RX signal. Characters can be programmed to be 5, 6, 7, or 8 bits. The UART has a 64-byte receive FIFO and transmit FIFO and can be programmed to interrupt at different trigger levels. The UART generates its own desired baud rate based upon a programmable divisor and its input clock. It can transmit even, odd, or no parity and 1, 1.5, or 2 stop bits. The receiver can detect break, idle, or framing errors, FIFO overflow, and parity errors. The transmitter can detect FIFO underflow. The UART also contains a software interface for modem control operations, and has software flow control and hardware flow control capabilities. The SC16C754 is available in plastic LQFP80 and PLCC68 packages. 2. Features s Pin patible with SC16C654IA68 and SC16C554IA68 with additional enhancements s Up to 5 Mbits/s baud rate (at 3.3 V and 5 V; at 2.5 V maximum baud rate is 3 Mbits/s) s 64-byte transmit FIFO s 64-byte receive FIFO with error flags s Programmable and selectable transmit and receive FIFO trigger levels for DMA and interrupt generation s Software/hardware flow control x Programmable Xon/Xoff characters x Programmable auto-RTS and auto-CTS s...