PC16550DN/NOPB

Product Overview

Category

The PC16550DN/NOPB belongs to the category of integrated circuits (ICs) specifically designed for serial communication.

Use

This product is commonly used in various electronic devices that require reliable and efficient serial data transmission, such as computers, printers, modems, and industrial control systems.

Characteristics

• High-speed data transfer: The PC16550DN/NOPB supports baud rates up to 115.2 kbps, allowing for fast and efficient data transmission.
• FIFO buffer: It features a First-In-First-Out (FIFO) buffer, which helps in reducing CPU overhead and improving overall system performance.
• Error detection and correction: This IC incorporates error detection and correction mechanisms, ensuring data integrity during transmission.
• Versatile interface: The PC16550DN/NOPB supports both RS-232 and RS-485 interfaces, making it compatible with a wide range of devices.
• Low power consumption: It is designed to operate efficiently while consuming minimal power.

Package and Quantity

The PC16550DN/NOPB is available in a standard 40-pin dual in-line package (DIP). It is typically sold in reels or tubes containing multiple units, with quantities varying based on customer requirements.

Specifications

• Supply voltage: 3.3V
• Operating temperature range: -40°C to +85°C
• Data format: 8-bit
• Parity: None, Even, Odd
• Stop bits: 1, 1.5, 2
• Transmit/receive buffer size: 16 bytes
• Maximum baud rate: 115.2 kbps

Detailed Pin Configuration

The PC16550DN/NOPB has a total of 40 pins, each serving a specific function. Here is a detailed pin configuration:

1. VCC - Power supply voltage
2. GND - Ground
3. CTS - Clear to Send (input)
4. RTS - Request to Send (output)
5. RxD - Receive Data (input)
6. TxD - Transmit Data (output)
7. DSR - Data Set Ready (input)
8. DCD - Data Carrier Detect (input)
9. RI - Ring Indicator (input)
10. INT - Interrupt output 11-18. Data bus (D0-D7) 19-22. Address bus (A0-A3)
11. WR - Write control (input)
12. RD - Read control (input)
13. RESET - Reset input 26-33. Control signals (C0-C7) 34-40. Clock and timing signals

Functional Features

The PC16550DN/NOPB offers several functional features that enhance its performance and usability:

1. FIFO buffer: The integrated FIFO buffer reduces CPU overhead by storing incoming and outgoing data, allowing the CPU to perform other tasks simultaneously.
2. Programmable baud rate generator: This feature enables flexible configuration of the serial communication speed to match specific application requirements.
3. Auto flow control: The PC16550DN/NOPB supports automatic flow control using CTS and RTS signals, preventing data loss due to buffer overflow or underflow.
4. Enhanced error handling: It incorporates error detection and correction mechanisms, including parity checking and framing error detection, ensuring reliable data transmission.

Advantages and Disadvantages

Advantages

• High-speed data transfer capability
• Versatile interface compatibility
• Low power consumption
• Error detection and correction mechanisms
• Efficient FIFO buffer implementation

Disadvantages

• Limited transmit/receive buffer size (16 bytes)
• Requires external components for complete serial communication setup
• Relatively higher cost compared to simpler UART ICs

Working Principles

The PC16550DN/NOPB operates based on the Universal Asynchronous Receiver-Transmitter (UART) principle. It receives parallel data from the system bus, converts it into serial format, and transmits it over the communication line. Similarly, it receives serial data, converts it back to parallel format, and transfers it to the system bus.

The UART core of the PC16550DN/NOPB handles various tasks such as baud rate generation, data framing, error detection, and flow control. It interfaces with the system bus and the external devices through its pins, enabling seamless serial communication.

Detailed Application Field Plans

The PC16550DN/NOPB finds extensive application in the following fields:

1. Computer systems: It is widely used in desktop computers, laptops, and servers for reliable serial communication between peripherals like modems, mice, and keyboards.
2. Printers and scanners: The PC16550DN/NOPB facilitates efficient data transfer between printers, scanners, and the host computer, ensuring accurate and timely printing or scanning operations.
3. Industrial automation: It plays a crucial role in industrial control systems, allowing seamless communication between programmable