TL16C552 Dual UART with 16-Byte FIFOs & Parallel Port

Description

The TL16C552 is a powerhouse for hobbyists and developers looking to add serious communication capabilities to their custom projects. This Dual Asynchronous Communications Element (ACE) with an Integrated Centronix-style Parallel Port is the "Swiss Army Knife" of I/O expansion. Whether you are building a custom vintage-style computer, a home automation gateway, or a data logger that needs to talk to multiple devices at once, the TL16C552 provides two independent UARTs and a bidirectional parallel port all in one package.

FEATURES

• Dual UART Functionality: Two fully independent channels for serial communication, allowing you to talk to two different devices simultaneously.

• 16-Byte FIFO Buffers: Built-in 16-byte buffers for both transmit and receive on each UART to reduce CPU overhead and prevent data loss at high speeds.

• Integrated Parallel Port: Features a Centronix-style bidirectional parallel port, perfect for legacy printer support or high-speed 8-bit data transfers.

• Programmable Baud Rate Generator: Easily set your communication speeds to match any project requirements.

• Fully Prioritized Interrupt System: Efficiently manages data flow by alerting your controller only when data is ready or transmission is complete.

• Standardized Interfacing: Compatible with most 8-bit and 16-bit microprocessor buses.

• Modem Control Functions: Includes full modem control signals (CTS, RTS, DSR, DTR, RI, and DCD) for professional-grade serial networking.

Applications

• Vintage Computer Restoration: Add modern, reliable serial and parallel I/O to your 8-bit or 16-bit homebrew computers.

• Multi-Sensor Data Loggers: Connect multiple serial sensors (like LiDAR, GPS, or CO2 monitors) to a single master controller.

• Industrial Automation Gateways: Bridge older parallel machinery with modern serial-based monitoring systems.

• Custom Communication Hubs: Create a central hub for DIY home automation that requires various interface types.

• Embedded Linux Projects: Expand the I/O of single-board computers that lack sufficient hardware UARTs.

• The Ultimate All-in-One Communication Controller

• Dual UART + Parallel Port Integration for Advanced Projects

• Professional-Grade Serial and Parallel Expansion for Makers

Parameters

• Supply Voltage (Vcc): 4.75V to 5.25V (Standard 5V Logic)

• Package Type: 68-pin PLCC (Plastic Leaded Chip Carrier)

• Clock Frequency: Supports up to 16 MHz

• UART Compatibility: Functional equivalent to the TL16C550C

• Operating Temperature: 0°C to 70°C (Commercial Grade)

• I/O Logic Levels: TTL Compatible

• Data Rates: Supports standard baud rates up to 1 Mbps with appropriate clocking