Overview
The TL16C554FNR is an enhanced quadruple version of the TL16C550B asynchronous communications element (ACE) produced by Texas Instruments. This component integrates four improved ACEs along with steering logic, making it a robust solution for serial communication applications. Each channel of the TL16C554FNR performs serial-to-parallel conversion on data received from peripheral devices or modems and parallel-to-serial conversion on data transmitted by the CPU. This allows for comprehensive status reporting, error detection, and efficient data handling.
Key Specifications
| Parameter | Description | Value |
|---|---|---|
| Package Type | 68-pin plastic-leaded chip-carrier (PLCC) FN package | 68 pins |
| Operating Temperature Range | 0°C to 70°C (TL16C554), -40°C to 85°C (TL16C554I) | 0°C to 70°C |
| Supply Voltage | 4.75 V to 5.25 V | 5 V nominal |
| Clock Frequency | Up to 16 MHz | 16 MHz |
| Data Rate | Up to 1 Mbps | 1 Mbps |
| FIFO Size | 16 bytes (plus three bits of error data per byte in the receiver FIFO) | 16 bytes |
| Number of Channels | 4 | Quadruple ACE |
| Baud Rate Generator | Programmable, divides input reference clock by 1 to (2^16-1) | Programmable |
| Modem Control Functions | CTS, RTS, DSR, DTR, RI, and DCD | Yes |
| Interrupt System | Fully prioritized interrupt system controls | Fully prioritized |
Key Features
Integrated Asynchronous Communications Element: Consists of four improved TL16C550 ACEs plus steering logic.
FIFO Mode: Each ACE transmitter and receiver is buffered with a 16-byte FIFO to reduce the number of interrupts to the CPU.
Programmable Baud Rate Generators: Allow division of any input reference clock by 1 to (2^16-1) and generate an internal 16 × clock.
Modem Control Functions: Includes CTS, RTS, DSR, DTR, RI, and DCD.
Auto-Flow Control: Selectable autoflow control feature in FIFO mode to reduce software overhead and increase system efficiency.
Internal Diagnostic Capabilities: Loopback controls for communications link fault isolation, break, parity, overrun, framing error simulation.
Fully Prioritized Interrupt System: Independently controlled transmit, receive, line status, and data set interrupts.
Applications
The TL16C554FNR is suitable for various serial communication applications, including:
Modem Interfaces: Supports modem control functions and auto-flow control.
Serial Data Transmission: Ideal for systems requiring high-speed serial data transmission up to 1 Mbps.
Embedded Systems: Used in embedded systems where multiple serial communication channels are needed.
Industrial Automation: Useful in industrial automation for reliable and efficient serial communication.
Network Devices: Can be used in network devices requiring multiple asynchronous communication channels.
Q & A
- Q: What is the maximum data rate supported by the TL16C554FNR?
A: The TL16C554FNR supports a maximum data rate of up to 1 Mbps.
- Q: What types of packages are available for the TL16C554FNR?
A: The TL16C554FNR is available in a 68-pin plastic-leaded chip-carrier (PLCC) FN package and an 80-pin (TQFP) PN package.
- Q: What is the operating temperature range for the TL16C554FNR?
A: The operating temperature range for the TL16C554 is 0°C to 70°C, and for the TL16C554I, it is -40°C to 85°C.
- Q: Does the TL16C554FNR support modem control functions?
A: Yes, the TL16C554FNR includes modem control functions such as CTS, RTS, DSR, DTR, RI, and DCD.
- Q: What is the size of the FIFO in the TL16C554FNR?
A: Each ACE transmitter and receiver is buffered with a 16-byte FIFO, plus three bits of error data per byte in the receiver FIFO.
- Q: Can the TL16C554FNR be used in industrial automation?
A: Yes, the TL16C554FNR is suitable for industrial automation due to its reliable and efficient serial communication capabilities.
- Q: How does the TL16C554FNR handle interrupts?
A: The TL16C554FNR features a fully prioritized interrupt system with independently controlled transmit, receive, line status, and data set interrupts.
- Q: What is the clock frequency supported by the TL16C554FNR?
A: The TL16C554FNR supports a clock frequency of up to 16 MHz.
- Q: Does the TL16C554FNR support auto-flow control?
A: Yes, the TL16C554FNR has a selectable autoflow control feature in FIFO mode to reduce software overhead and increase system efficiency.
- Q: What are the key diagnostic capabilities of the TL16C554FNR?
A: The TL16C554FNR includes loopback controls for communications link fault isolation, break, parity, overrun, and framing error simulation.
