Overview
The TL16C450FNR, produced by Texas Instruments, is a CMOS version of an asynchronous communications element (ACE). It functions as a serial input/output interface in microcomputer systems, performing serial-to-parallel and parallel-to-serial conversions. The device is capable of handling data from peripheral devices or modems and reporting the status of operations, including any error conditions encountered. It is designed to be a faster plug-in replacement for the National Semiconductor NS16C450 and is compatible with most popular microprocessors.
Key Specifications
| Parameter | Description |
|---|---|
| Package | PLCC (FN) - 44 pins |
| Operating Temperature Range | 0 to 70°C |
| Baud Rate Generation | dc to 256 Kbit/s, divisible by 1 to (2^16 - 1) |
| Character Length | 5-, 6-, 7-, or 8-bit characters |
| Parity Bit Generation and Detection | Even-, odd-, or no-parity bit |
| Stop Bit Generation | 1-, 1 1/2-, or 2-stop bits |
| Interrupts | Transmit, receive, line status, and data set interrupts independently controlled |
| Modem Control Functions | CTS, RTS, DSR, DTR, RI, and DCD |
Key Features
- Programmable baud rate generator allowing division of any input reference clock by 1 to (2^16 - 1) and generating an internal 16× clock.
- Full double buffering eliminates the need for precise synchronization.
- Standard asynchronous communication bits (start, stop, and parity) added or deleted to or from the serial data stream.
- Independent receiver clock input.
- Complete status reporting capabilities and internal diagnostic capabilities including loopback controls and error simulation.
- Fully prioritized interrupt system controls and modem control functions.
- Easily interfaces to most popular microprocessors.
- 3-State TTL drive capabilities for bidirectional data bus and control bus.
- Line break generation and detection.
Applications
The TL16C450FNR is primarily used in microcomputer systems as a serial input/output interface. It is suitable for various applications requiring asynchronous communication, such as:
- Serial communication interfaces in embedded systems.
- Modem and peripheral device communication.
- Industrial control systems requiring serial data exchange.
- Telecommunication equipment and networking devices.
Q & A
- What is the TL16C450FNR used for?
The TL16C450FNR is used as a serial input/output interface in microcomputer systems, performing serial-to-parallel and parallel-to-serial conversions.
- What are the key features of the TL16C450FNR?
Key features include a programmable baud rate generator, full double buffering, standard asynchronous communication bits, independent receiver clock input, and complete status reporting capabilities.
- What is the operating temperature range of the TL16C450FNR?
The operating temperature range is 0 to 70°C.
- What types of parity bits can the TL16C450FNR generate and detect?
The device can generate and detect even-, odd-, or no-parity bits.
- Does the TL16C450FNR support modem control functions?
Yes, it supports modem control functions including CTS, RTS, DSR, DTR, RI, and DCD.
- Can the TL16C450FNR be used with various microprocessors?
Yes, it easily interfaces to most popular microprocessors.
- What is the purpose of the baud rate generator in the TL16C450FNR?
The baud rate generator divides any input reference clock by 1 to (2^16 - 1) and generates an internal 16× clock.
- Does the TL16C450FNR have internal diagnostic capabilities?
Yes, it includes loopback controls for communications link fault isolation and error simulation.
- How does the TL16C450FNR handle interrupts?
The device has a fully prioritized interrupt system with transmit, receive, line status, and data set interrupts independently controlled.
- What package type is the TL16C450FNR available in?
The TL16C450FNR is available in a PLCC (FN) package with 44 pins.
