ST16C554DIQ Quad UART with 16-Byte FIFOs

The ST16C554DIQ from STMicroelectronics is a high-performance quad universal asynchronous receiver-transmitter (UART) integrated circuit, designed to address the needs of multiport serial communication in embedded systems. This robust component is well-suited for applications that require high data throughput, reliability, and a minimal footprint.

The device integrates four independent UART channels onto a single chip, each boasting a 16-byte transmit and receive FIFO (First In, First Out) buffer, which significantly enhances data handling by reducing CPU overhead. This feature is particularly beneficial in systems where multiple serial ports are in operation, ensuring smooth and efficient data flow even under high traffic conditions.

Each UART channel of the ST16C554DIQ is fully programmable and can support a wide range of serial protocols with data transfer rates up to 1.5 Mbps. The flexibility in baud rate selection makes it an ideal choice for various applications, including industrial control systems, point-of-sale terminals, and complex networking environments where multiple devices need to communicate simultaneously.

Additional features of the ST16C554DIQ include:

• Automatic hardware and software flow control
• Sleep and power-saving modes for energy-efficient operation
• Modem control functions for comprehensive serial communication
• Standard industrial operating temperature range
• Available in a compact 64-pin LQFP (Low-profile Quad Flat Package) or TQFP (Thin Quad Flat Package)

The ST16C554DIQ also provides an interrupt status register that simplifies interrupt processing and supports multi-drop applications with its 9-bit data mode. Its robust design includes built-in protection against electrostatic discharge (ESD), ensuring the longevity and reliability of the component in harsh electrical environments.

Overall, the ST16C554DIQ is a versatile and reliable solution for designers looking to implement multiple serial interfaces in their embedded systems. Its combination of high-speed operation, FIFO buffers, and advanced features make it an excellent choice for a wide array of applications that require dependable serial communications.