TG16C552: Dual Channel Uart for Serial Data Communication with Printer Port

General Description | Technical Data Sheet | Ordering Information

The TG16C552 is a dual-channel high performance Universal Asynchronous Receiver/Transmitter (UART) offering data rates up to 1.5 Mbps. The TG16C552 is a dual functional upgrade of the industry standard 16C450, with the addition of a 16-byte transmit and receive FIFO and parallel port. On power-up, the TG16C552 is equivalent to the 16C452. The TG16C552 can invoke the FIFO mode of operation via setting its internal register bit for each uart. The addition of the 16-Byte transmit and receive FIFOs act as a buffer to relieve the CPU or controller of additional software overhead and improve efficiency. Additionally, there are two new pins on each of the TG16C552 uarts versus the 16C452. The addition of these pins, TXRDY- and RXRDY-, allows communication with a DMA controller.

The TG16C552 uarts implement serial-to-parallel conversions on data received from a peripheral device or modem and parallel-to-serial conversion on data received from the CPU or controller. Internal registers allow for Error Indications, Operation Status, and complete Modem Controls, which can be used to monitor transmit and receive activity. Independent control of the transmit, receive, line status, and data set interrupts, allows the uart to operate under many different processor interrupt systems. The flexibility of the on-board Programmable Baud Rate Generator, allows for selection of transmit and receive clock rates from 50bps to 1.5Mbps. For ease of trouble shooting and fault isolation, the internal Loop-Back capability aids in diagnostic testing in conjunction with Break, Parity, Over-run, and Framing Error simulation register data. In addition to the dual uarts, the TG16C552 provides a fully bi-directional parallel data port which supports the standard CENTRONICSä interface and the PS/2ä bi-directional option. The parallel data port can also be configured to act like a general-purpose input/output interface. The printer status registers give the user control and status of the parallel port operation.

The TG16C552 is ideally suited for PC, PCI, and embedded systems applications, such as high-speed COM ports or internal modems, that require uarts and a printer port. The TG16C552 is available in 68-pin PLCC package. It is fabricated in an advanced 0.5m CMOS process to achieve low power drain and high-speed performance.

Technical Data Sheet

Click here to view a complete data sheet on the TG16C552 Version 1.5 (109KB pdf format), or right click to download the file to your computer.

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Ordering Information

* The commercial temperature product will operate over, but is not 100% tested, over the Industrial range. If 100% testing is required for the Industrial temperature range, order the "I" suffix product.