Overview
The TL16C554FN, produced by Texas Instruments, is an enhanced quadruple version of the TL16C550B asynchronous communications element (ACE). This component is designed to perform serial-to-parallel and parallel-to-serial conversions on data characters, making it a crucial part of asynchronous communication systems. Each channel of the quadruple ACE can operate independently, and the CPU can read the complete status of each channel at any time, including any error conditions encountered. The TL16C554FN is available in a 68-pin plastic-leaded chip-carrier (PLCC) FN package and supports various operating modes, including FIFO mode, to enhance system efficiency and reduce software overhead.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package Type | 68-pin PLCC (FN) | - |
| Operating Temperature Range | 0 to 70 | °C |
| Clock Frequency | Up to 16 MHz | - |
| Baud Rate | Up to 1 Mbaud | - |
| Character Length | 5-, 6-, 7-, or 8-Bit | - |
| Parity Bit | Even-, Odd-, or No-Parity | - |
| Stop Bit Generation | 1-, 1 1/2-, or 2-Stop Bit | - |
| Power Dissipation | 500 mW (at 70°C) | - |
| Input Voltage Range | 0 to 5.25 V (standard voltage) | V |
| Output Voltage Range | 2.4 V (high-level), 0.4 V (low-level) | V |
Key Features
- Integrated Asynchronous Communications Element with four improved TL16C550 ACEs plus steering logic.
- In FIFO mode, each ACE transmitter and receiver is buffered with a 16-byte FIFO to reduce CPU interrupts.
- Programmable baud rate generators allowing division of any input reference clock by 1 to (2^16 - 1).
- Full programmability of serial interface characteristics, including character length, parity, and stop bits.
- Independently controlled transmit, receive, line status, and data set interrupts.
- Modem control functions (CTS, RTS, DSR, DTR, RI, and DCD).
- Internal diagnostic capabilities, including loopback controls and error simulation.
- 3-State outputs providing TTL drive capabilities for bidirectional data bus and control bus.
Applications
The TL16C554FN is suitable for various applications requiring asynchronous communication, such as:
- Embedded systems needing multiple serial communication channels.
- Industrial control systems requiring reliable and efficient serial data transmission.
- Telecommunication equipment and modems.
- Computer peripherals and interfaces.
- Automotive and aerospace systems where robust serial communication is essential.
Q & A
- What is the TL16C554FN?
The TL16C554FN is an enhanced quadruple asynchronous communications element (ACE) produced by Texas Instruments.
- What package types are available for the TL16C554FN?
The TL16C554FN is available in a 68-pin plastic-leaded chip-carrier (PLCC) FN package and an 80-pin (TQFP) PN package.
- What is the maximum clock frequency supported by the TL16C554FN?
The TL16C554FN supports a maximum clock frequency of up to 16 MHz.
- What are the key features of the FIFO mode in the TL16C554FN?
In FIFO mode, each ACE transmitter and receiver is buffered with a 16-byte FIFO, reducing CPU interrupts and enhancing system efficiency.
- Can the TL16C554FN generate different baud rates?
Yes, the TL16C554FN includes programmable baud rate generators that can divide the input reference clock by 1 to (2^16 - 1).
- What types of parity and stop bits can the TL16C554FN support?
The TL16C554FN supports even-, odd-, or no-parity bits and 1-, 1 1/2-, or 2-stop bit generation.
- Does the TL16C554FN have internal diagnostic capabilities?
Yes, the TL16C554FN includes internal diagnostic capabilities such as loopback controls and error simulation.
- What modem control functions does the TL16C554FN support?
The TL16C554FN supports modem control functions including CTS, RTS, DSR, DTR, RI, and DCD.
- What is the operating temperature range of the TL16C554FN?
The operating temperature range of the TL16C554FN is from 0 to 70°C.
- Can the TL16C554FN be used in automotive and aerospace systems?
Yes, the TL16C554FN is suitable for use in automotive and aerospace systems due to its robust serial communication capabilities.
