TL16C552FN Dual Universal Asynchronous Receiver and Transmitter (UART) with FIFO PLCC-68 (TL16C552FN PLCC-68 IC)
The TL16C552FN is a high-performance, dual-channel Universal Asynchronous Receiver and Transmitter (UART) designed to provide two independent serial communication ports in a single package. This IC features a 16-byte Transmit and Receive FIFO (First-In, First-Out) for each channel, which significantly enhances system performance by reducing CPU interrupts during high-speed data transfers. It is functionally compatible with the industry-standard 16550 UART and includes an additional bidirectional parallel port (Centronics-compatible), making it a comprehensive I/O solution for complex digital systems.
This IC is primarily used in multi-port serial boards, industrial automation controllers, and embedded computing systems. It is a specialized component for advanced electronics projects in India involving custom multi-channel RS-232/RS-485 interfaces, legacy printer port emulation, and building high-reliability communication gateways for networked industrial machinery.
Key Features
- Dual independent UART channels with individual controls
- Integrated 16-byte Transmit and Receive FIFOs for each channel
- Bidirectional parallel port (Centronics/IEEE 1284 compatible)
- Fully software compatible with 16450 and 16550 UARTs
- Programmable baud rate generator for each channel (up to 1.5 Mbps)
- Complete modem control capability (CTS, RTS, DSR, DTR, RI, CD)
- Independent receiver clock input for asynchronous operation
- Support for 5, 6, 7, and 8-bit character lengths
- Prioritized interrupt system for efficient data handling
Specifications
- IC Type = Dual UART with FIFO and Parallel Port
- Data Rate = Up to 1.5 Mbps
- FIFO Depth = 16-Byte (TX and RX per channel)
- Supply Voltage (VCC) = 4.75V to 5.25V (5V Typical)
- Logic Interface = 8-Bit Parallel Data Bus
- Modem Control = Full (Two independent sets)
- Package Type = PLCC-68
- Number of Pins = 68
- Mounting Type = Surface Mount / Socket (Through-Hole)
- Operating Temperature = 0 to 70 degrees Celsius
Interfaces
- PIN 1 to 8 (D0 to D7) = 8-Bit Parallel Data Bus
- PIN 10, 34 (VCC) = Positive Supply Voltage (5V)
- PIN 26, 60 (GND) = Ground (0V)
- PIN 13 (TXA) / PIN 47 (TXB) = Serial Data Outputs
- PIN 15 (RXA) / PIN 49 (RXB) = Serial Data Inputs
- PIN 18 to 25 (PD0 to PD7) = 8-Bit Parallel Port Data
- PIN 27 to 29 (A0 to A2) = Address Selection Pins
- PIN 31, 32 (CS0, CS1) = UART Channel Select Pins
- PIN 36, 37 (IOR, IOW) = Read and Write Control Signals
