Overview
The TL16C554PNR, manufactured by Texas Instruments, is an enhanced quadruple version of the TL16C550B asynchronous communications element (ACE). This component integrates four improved TL16C550 ACEs along with steering logic, making it a robust solution for serial communication needs. Each channel of the TL16C554PNR performs serial-to-parallel conversion on data characters received from peripheral devices or modems and parallel-to-serial conversion on data characters transmitted by the CPU. This device is designed to minimize system overhead and maximize system efficiency by incorporating all necessary logic on the chip.
Key Specifications
| Specification | Value |
|---|---|
| Package | 80-pin LQFP (PN) |
| Operating Temperature Range | 0°C to 70°C |
| Number of Channels | 4 |
| FIFO Size | 16 bytes |
| Data Rate (Max) | 1 Mbps |
| Supply Voltage | 4.75 V to 5.25 V |
| False Start Bit Detection | Yes |
| Modem Control | Yes (CTS, RTS, DSR, DTR, RI, DCD) |
| Mounting Type | Surface Mount |
| Clock Rate | Up to 16 MHz |
Key Features
- Integrated Asynchronous Communications Element
- Consists of four improved TL16C550 ACEs plus steering logic
- In FIFO mode, each ACE transmitter and receiver is buffered with 16-byte FIFO to reduce CPU interrupts
- In TL16C450 mode, hold and shift registers eliminate the need for precise synchronization between the CPU and serial data
- Programmable baud rate generators allowing division of any input reference clock by 1 to (2^16 - 1) and generating an internal 16 × clock
- Adds or deletes standard asynchronous communication bits (start, stop, and parity) to or from the serial data stream
- Independently controlled transmit, receive, line status, and data set interrupts
- Fully programmable serial interface characteristics: 5-, 6-, 7-, or 8-bit characters, even-, odd-, or no-parity bit, 1-, 1 1/2-, or 2-stop bit generation
- Complete status reporting capabilities and line break generation and detection
- Internal diagnostic capabilities: loopback controls for communications link fault isolation, break, parity, overrun, framing error simulation
- Fully prioritized interrupt system controls and modem control functions
- 3-state outputs provide TTL drive capabilities for bidirectional data bus and control bus
Applications
The TL16C554PNR is suitable for a variety of applications requiring robust serial communication capabilities, including:
- Embedded systems and microcontrollers needing multiple serial interfaces
- Industrial automation and control systems
- Telecommunication equipment and modems
- Point-of-sale terminals and other serial communication-intensive devices
- Medical devices requiring reliable serial communication
Q & A
- What is the TL16C554PNR?
The TL16C554PNR is a quadruple UART (Universal Asynchronous Receiver Transmitter) with 16-byte FIFOs, manufactured by Texas Instruments.
- What package types are available for the TL16C554PNR?
The TL16C554PNR is available in an 80-pin LQFP (PN) package and a 68-pin PLCC (FN) package.
- What is the maximum data rate supported by the TL16C554PNR?
The TL16C554PNR supports a maximum data rate of 1 Mbps.
- Does the TL16C554PNR support modem control functions?
Yes, the TL16C554PNR supports modem control functions including CTS, RTS, DSR, DTR, RI, and DCD.
- What is the purpose of the FIFO in the TL16C554PNR?
The FIFO (First-In-First-Out) buffer reduces the number of interrupts to the CPU by storing up to 16 bytes of data in both receive and transmit modes.
- Can the TL16C554PNR operate in different baud rates?
Yes, the TL16C554PNR has programmable baud rate generators that can divide the input reference clock by a divisor between 1 and (2^16 - 1).
- What are the key diagnostic capabilities of the TL16C554PNR?
The TL16C554PNR includes loopback controls for communications link fault isolation, break, parity, overrun, and framing error simulation.
- How does the TL16C554PNR handle interrupts?
The TL16C554PNR has independently controlled transmit, receive, line status, and data set interrupts, and a fully prioritized interrupt system.
- What are the typical applications for the TL16C554PNR?
The TL16C554PNR is used in embedded systems, industrial automation, telecommunication equipment, point-of-sale terminals, and medical devices.
- What is the operating temperature range of the TL16C554PNR?
The operating temperature range of the TL16C554PNR is from 0°C to 70°C.
- Does the TL16C554PNR support false start bit detection?
Yes, the TL16C554PNR supports false start bit detection.
