Overview
The SC28L198A1A is a highly integrated Octal UART (Universal Asynchronous Receiver-Transmitter) produced by NXP USA Inc. This CMOS-LSI communications device is designed to provide eight full-duplex asynchronous channels, making it an ideal solution for various communication-intensive applications. The device supports both 3.3V and 5V supply voltages and features advanced functionalities such as automatic in-band flow control, address recognition, and programmable interrupt priorities.
Key Specifications
| Parameter | Description |
|---|---|
| Supply Voltage | 3.3V ± 10% or 5V ± 10% |
| UART Channels | 8 full-duplex asynchronous channels |
| FIFOs | 16-byte receiver and transmitter FIFOs for each UART |
| Baud Rate | 22 fixed rates; 50 – 230.4K baud or 100 to 460.8K baud, additional non-standard rates up to 500K baud |
| Package Type | 84-Pin Plastic Leaded Chip Carrier (PLCC) or 100-Pin Plastic Low-Profile Quad Flat Pack (LQFP) |
| Operating Temperature | -40°C to +85°C |
| Crystal Oscillator | On-chip crystal oscillator, 2–8 MHz |
| Data Formats | 5 to 8 data bits plus parity, odd, even, force or no parity, 1, 1.5 or 2 stop bits |
Key Features
- Single 3.3V and 5V power supply
- Eight industry-standard full-duplex UART channels
- In-band flow control using programmable Xon/Xoff characters
- Flow control using CTSN/RTSN hardware handshaking
- Automatic address detection in multi-drop mode
- Three-byte general purpose character recognition
- Fast data bus with 30 ns data bus release time and 125 ns bus cycle time
- Programmable interrupt priorities and global interrupt and control registers
- Vectored interrupts with programmable interrupt vector formats
- Watch dog timer for each receiver (64 receive clock counts)
- Parity, framing, and overrun error detection
- False start bit detection and line break detection and generation
- Programmable channel mode: normal (full duplex), diagnostic modes (automatic echo, local loop back, remote loop back)
- Four I/O ports per UART for modem controls, clocks, RTSN, I/O etc., with change of state detectors
- Two global inputs and two global outputs for general purpose I/O
- Power down mode
- TTL input levels and high speed CMOS technology
Applications
- Statistical Multiplexers
- Data Concentrators
- Packet-switching networks
- Process Control and Building or Plant Control
- Laboratory data gathering
- ISDN front ends
- Computer Networks and Point-of-Sale terminals
- Automotive, cab, and engine controls
- Entertainment systems and MIDI keyboard control
- Theater lighting control
- Terminal Servers and Computer-Printer/Plotter links
Q & A
- What is the SC28L198A1A?
The SC28L198A1A is an Octal UART (Universal Asynchronous Receiver-Transmitter) produced by NXP USA Inc., providing eight full-duplex asynchronous channels.
- What are the supported supply voltages for the SC28L198A1A?
The device supports both 3.3V ± 10% and 5V ± 10% supply voltages.
- How many UART channels does the SC28L198A1A have?
The SC28L198A1A has eight full-duplex asynchronous UART channels.
- What is the size of the FIFOs in the SC28L198A1A?
Each UART has 16-byte receiver and transmitter FIFOs.
- What are the baud rate options for the SC28L198A1A?
The device supports 22 fixed baud rates and additional non-standard rates up to 500K baud.
- What are the package types available for the SC28L198A1A?
The device is available in 84-Pin PLCC and 100-Pin LQFP packages.
- What is the operating temperature range for the SC28L198A1A?
The operating temperature range is -40°C to +85°C.
- Does the SC28L198A1A have an on-chip crystal oscillator?
Yes, it has an on-chip crystal oscillator that operates at 2–8 MHz.
- What data formats are supported by the SC28L198A1A?
The device supports 5 to 8 data bits plus parity, with options for odd, even, force, or no parity, and 1, 1.5, or 2 stop bits.
- What are some of the key applications for the SC28L198A1A?
Key applications include statistical multiplexers, data concentrators, packet-switching networks, process control, and various other communication-intensive systems.
