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ST16C550CQ-BC

Updated: 2026-07-29

Overview

The ST16C550CQ-BC is a UART IC designed to facilitate serial communication in industrial and embedded applications. It is known for its robustness and reliability, making it a preferred choice in environments requiring stable data transmission. This component integrates advanced features such as FIFO buffers to reduce CPU overhead and programmable baud rates for flexibility in communication speed. Its low power consumption makes it suitable for battery-operated devices and energy-efficient systems.

Structure and Working Principle

The ST16C550CQ-BC operates by converting parallel data from a CPU into serial data for transmission and vice versa. It includes a transmitter and receiver section, each with its own FIFO buffer to handle data efficiently. The IC supports standard UART protocols and can be configured for various data formats, including 5 to 8 data bits, 1 or 2 stop bits, and parity options. Its internal registers allow for easy programming and control, enabling seamless integration into diverse systems.

Key Features

Key features of the ST16C550CQ-BC include 16-byte FIFO buffers for both transmitter and receiver, reducing interrupt overhead and improving system performance. It supports baud rates up to 1.5 Mbps, catering to high-speed communication needs. Additionally, the IC offers low power consumption modes, making it ideal for portable and energy-sensitive applications. Its wide operating voltage range (3.3V to 5V) ensures compatibility with various system designs.

Application Areas

The ST16C550CQ-BC is widely used in industrial automation systems, where reliable serial communication is critical. It is also employed in telecommunications equipment, data acquisition systems, and embedded computing platforms. Other applications include point-of-sale terminals, medical devices, and automotive electronics, where its robustness and efficiency are highly valued. Its versatility makes it a staple in many B2B and OEM environments.

Maintenance and Precautions

To ensure longevity, the ST16C550CQ-BC should be protected from electrostatic discharge (ESD) during handling and installation. Proper voltage levels must be maintained to prevent damage to the IC. Thermal management is also important, especially in high-temperature environments. Adequate heat dissipation measures, such as heatsinks or proper PCB layout, should be implemented to maintain optimal performance.

B2B Procurement Guide

When procuring the ST16C550CQ-BC, verify the supplier's credibility and ensure the components are genuine. Bulk purchases may offer cost savings, but always confirm lead times and minimum order quantities. Check for compatibility with your system's voltage and communication protocols. It’s advisable to request samples for testing before large-scale procurement to ensure performance meets expectations.