The MC68B50P is a member of the MC6800 family of asynchronous communications interface adapters (ACIAs) manufactured by Freescale Semiconductor (formerly Motorola). It provides a flexible means of implementing asynchronous serial data communication interfaces in microprocessor-based systems.

Applications

• Serial communication ports in embedded systems.
• Terminal interfaces for industrial control equipment.
• Data acquisition systems requiring serial data transfer.
• Communication links in point-of-sale (POS) terminals.
• Serial printers and other peripherals.

Features

• Full-duplex asynchronous operation. Allows simultaneous transmission and reception of data.
• Programmable word length, parity, and stop bits. Supports a wide range of serial communication protocols.
• Internal baud rate generator. Provides a convenient and accurate clock source for serial data transmission.
• Modem control signals. Facilitates the implementation of modem interfaces.
• Interrupt capability. Allows the microprocessor to respond quickly to incoming data or status changes.
• Double buffered transmitter and receiver. Prevents data loss during high-speed data transfer.

Benefits

• Simplified serial communication interface design. The MC68B50P handles many of the complexities of asynchronous serial communication, reducing the burden on the microprocessor.
• High data throughput. The double-buffered transmitter and receiver allow for efficient data transfer at high baud rates.
• Flexible configuration. The programmable word length, parity, and stop bits allow the MC68B50P to be adapted to a wide range of serial communication protocols.
• Reduced system cost. The internal baud rate generator eliminates the need for an external clock source.
• Improved system performance. The interrupt capability allows the microprocessor to respond quickly to incoming data, improving overall system responsiveness.

Additional Details

The MC68B50P operates from a single +5V power supply. It is available in a 24-pin DIP package. The device is compatible with TTL logic levels. The baud rate generator can be programmed to generate a variety of standard baud rates. The MC68B50P also includes a loopback mode for testing purposes.