Overview
The TL16C550CFNR, produced by Texas Instruments, is a highly advanced asynchronous communications element (ACE) designed to enhance serial communication capabilities in various electronic systems. This component is a functional upgrade of the TL16C550B and the TL16C450, offering improved features and performance. It operates in both character mode (compatible with the TL16C450) and FIFO mode, significantly reducing software overhead by buffering received and transmitted characters.
The TL16C550CFNR supports serial-to-parallel and parallel-to-serial conversions, making it versatile for use with peripheral devices and modems. It includes comprehensive modem control functions and a prioritized interrupt system, which can be tailored to minimize software management of the communications link.
Key Specifications
| Parameter | Minimum | Typical | Maximum | Unit |
|---|---|---|---|---|
| Supply Voltage (VCC) | 4.75 | 5 | 5.25 | V |
| Operating Free-Air Temperature (TA) | 0 | 25 | 70 | °C |
| Storage Temperature (Tstg) | -65 | 150 | °C | |
| Clock Rate | 16 MHz | |||
| Baud Rate | Up to 1 Mbit/s | |||
| FIFO Depth | 16 bytes (including 3 error status bits per byte) | |||
| Input Voltage (VI) | 0 | VCC | V | |
| Output Voltage (VO) | 0 | VCC | V |
Key Features
- Programmable Auto-RTS and Auto-CTS for autoflow control, eliminating overrun errors.
- Supports 5-V and 3.3-V operation.
- Independent receiver clock input.
- Transmit, receive, line status, and data set interrupts independently controlled.
- Fully programmable serial interface characteristics:
- 5-, 6-, 7-, or 8-bit characters.
- Even-, odd-, or no-parity bit generation and detection.
- 1-, 1 1/2-, or 2-stop bit generation.
- Baud generation from dc to 1 Mbit/s.
- False-start bit detection and complete status reporting capabilities.
- 3-state output TTL drive capabilities for bidirectional data bus and control bus.
- Line break generation and detection.
- Internal diagnostic capabilities including loopback controls, break, parity, overrun, and framing error simulation.
- Fully prioritized interrupt system controls.
- Modem control functions (CTS, RTS, DSR, DTR, RI, and DCD).
Applications
The TL16C550CFNR is suitable for a wide range of applications requiring advanced serial communication capabilities, including:
- Embedded systems and microcontrollers.
- Industrial automation and control systems.
- Telecommunication equipment and modems.
- Point-of-sale terminals and other serial communication devices.
- Medical devices requiring reliable serial communication.
Q & A
- What is the maximum baud rate supported by the TL16C550CFNR?
The TL16C550CFNR supports baud rates up to 1 Mbit/s with a 16-MHz input clock.
- Does the TL16C550CFNR support both 5-V and 3.3-V operation?
- What is the depth of the FIFO in the TL16C550CFNR?
The receiver and transmitter FIFOs store up to 16 bytes, including three additional bits of error status per byte for the receiver FIFO.
- How does the autoflow control feature work in the TL16C550CFNR?
The autoflow control feature uses Auto-RTS and Auto-CTS to control serial data flow, preventing overrun errors by ensuring data transmission only when the receiver FIFO has space.
- What types of parity bits can the TL16C550CFNR generate and detect?
The TL16C550CFNR can generate and detect even-, odd-, or no-parity bits.
- Does the TL16C550CFNR support line break generation and detection?
- What modem control functions are available on the TL16C550CFNR?
The TL16C550CFNR includes modem control functions such as CTS, RTS, DSR, DTR, RI, and DCD.
- Can the TL16C550CFNR be used in safety-critical applications?
Users should refer to the datasheet and consult with Texas Instruments regarding the use in safety-critical applications, as there are specific disclaimers and considerations.
- What is the operating free-air temperature range for the TL16C550CFNR?
The operating free-air temperature range for the TL16C550CFNR is from 0°C to 70°C.
- Does the TL16C550CFNR have internal diagnostic capabilities?
