SCC2698BC1A84,518

The SCC2698B Enhanced Octal Universal Asynchronous Receiver/Transmitter (Octal UART) from NXP Semiconductors is a single-chip MOS-LSI communications device offering eight independent full-duplex asynchronous receiver/transmitter channels in one package. Fabricated with CMOS technology, it combines high density with low power consumption.

This Octal UART supports programmable data formats, including 5 to 8 data bits plus parity, with selectable odd, even, no parity, or force parity options. It also allows for 1, 1.5, or 2 stop bits. The operating speed for each receiver and transmitter can be independently selected from 26 fixed baud rates (50 to 38.4K baud), a 16X clock derived from a programmable counter/timer, or an external 1X or 16X clock. Error detection for parity, framing, and overrun is included, along with false start bit detection.

The device features quadruple buffered receiver data registers to minimize overrun potential and reduce interrupt overhead. A handshaking capability (RTS/CTS) is provided to disable a remote UART transmitter when the receiver buffer is full. It also includes a power-down mode for reduced power consumption. The SCC2698B is TTL compatible and operates from a single +5V power supply.

Designed for applications such as clustered terminal systems, the SCC2698B is available in an 84-PLCC (J-Lead) package suitable for surface mounting. It offers configurable GPIO, an internal oscillator, and timer/counter functionality, with four multi-function programmable 16-bit counter/timers and four interrupt outputs.