Overview
The SC28L198A1A, produced by NXP USA Inc., is a Philips 28L198 Octal UART, a single-chip CMOS-LSI communications device. This component provides eight full-duplex asynchronous channels, each equipped with 16-byte receiver and transmitter FIFOs. It supports automatic in-band flow control using Xon/Xoff characters and address recognition in wake-up mode. The device is versatile, operating on both 3.3V and 5V supply voltages, making it suitable for a wide range of applications in various industries.
Key Specifications
| Parameter | Description |
|---|---|
| Supply Voltage | 3.3V ± 10% or 5V ± 10% |
| Package Type | 100-Pin Plastic Low–Profile Quad Flat Pack (LQFP) |
| Operating Temperature | –40 °C to +85 °C |
| UART Channels | 8 full-duplex asynchronous channels |
| FIFO Size | 16 bytes for each receiver and transmitter |
| Baud Rate | 22 fixed rates; 50 – 230.4K baud or 100 to 460.8K baud; additional non-standard rates up to 500K baud |
| Parity and Stop Bits | 5 to 8 data bits plus parity; odd, even, force or no parity; 1, 1.5 or 2 stop bits |
| Interrupt Handling | Programmable interrupt priorities; global interrupt and control registers; vectored interrupts |
| Power Down Mode | Available |
| Crystal Oscillator | On-chip crystal oscillator, 2–8 MHz |
Key Features
- Single 3.3V and 5V power supply
- Eight full-duplex UART channels with 16-byte FIFOs each
- 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 vectored interrupts
- Watch dog timer for each receiver (64 receive clock counts)
- Flexible baud rate selection with external 1x or 16x clock inputs
- 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.
- Two global inputs and two global outputs for general purpose I/O
- High speed CMOS technology and TTL input levels
Applications
- Statistical Multiplexers
- Data Concentrators
- Packet-switching networks
- Process Control and Building or Plant Control
- Laboratory data gathering
- ISDN front ends
- Computer Networks
- 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 a Philips 28L198 Octal UART, a single-chip CMOS-LSI communications device providing eight full-duplex asynchronous channels.
- What are the supply voltage options for the SC28L198A1A? The device operates on both 3.3V ± 10% and 5V ± 10% supply voltages.
- What is the package type of the SC28L198A1A? The SC28L198A1A comes in a 100-Pin Plastic Low–Profile Quad Flat Pack (LQFP).
- What is the operating temperature range of the SC28L198A1A? The operating temperature range is –40 °C to +85 °C.
- How many UART channels does the SC28L198A1A have? The device has eight full-duplex asynchronous UART channels.
- What is the size of the FIFOs in the SC28L198A1A? Each UART channel 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.
- Does the SC28L198A1A support flow control? Yes, it supports in-band flow control using Xon/Xoff characters and hardware handshaking using CTSN/RTSN.
- What are some of the key features of the SC28L198A1A's interrupt handling? It includes programmable interrupt priorities, global interrupt and control registers, and vectored interrupts.
- What are some common applications of the SC28L198A1A? Applications include statistical multiplexers, data concentrators, packet-switching networks, process control, and more.
