Overview
The SC28L198A1A,518, produced by NXP USA Inc., is a highly integrated CMOS-LSI communications device designed to provide advanced UART (Universal Asynchronous Receiver-Transmitter) functionality. This octal UART offers eight full-duplex asynchronous channels, making it suitable for a wide range of applications requiring multiple serial communication interfaces. The device supports both 3.3V and 5V supply voltages, enhancing its versatility in various system designs.
Key Specifications
| Parameter | Value |
|---|---|
| Supply Voltage | 3.3V ± 10%, 5V ± 10% |
| Number of Channels | 8 full-duplex asynchronous channels |
| FIFO Depth | 16 bytes (receiver and transmitter) |
| Baud Rate Range | 50 – 230.4K baud or 100 – 460.8K baud; additional non-standard rates up to 500K baud |
| Package Type | 100-Pin Plastic Low–Profile Quad Flat Pack (LQFP) |
| Operating Temperature | -40 °C to +85 °C |
| Data Bits and Parity | 5 to 8 data bits plus parity (odd, even, force, or no parity) |
| Stop Bits | 1, 1.5, or 2 stop bits |
Key Features
- Single chip CMOS-LSI communications device with eight full-duplex asynchronous channels
- 16-byte receiver and transmitter FIFOs for each UART
- In-band flow control using programmable Xon/Xoff characters and CTSN/RTSN hardware handshaking
- Automatic address detection in multi-drop mode and 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
- Watchdog timer for each receiver (64 receive clock counts)
- Flexible baud rate selection with internal generators and external 1x or 16x clock inputs
- Parity, framing, and overrun error detection; false start bit detection; line break detection and generation
- Programmable channel mode (normal, diagnostic modes, automatic echo, local loopback, remote loopback)
- 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 and on-chip crystal oscillator (2–8 MHz)
- TTL input levels and high-speed CMOS technology
Applications
- Statistical multiplexers and data concentrators
- Packet-switching networks
- Process control and building or plant control systems
- Laboratory data gathering and ISDN front ends
- Computer networks and point-of-sale terminals
- Automotive, cab, and engine controls
- Entertainment systems, MIDI keyboard control, and music systems
- Theater lighting control and terminal servers
- Computer-printer/plotter links
Q & A
- What is the SC28L198A1A,518 used for?
The SC28L198A1A,518 is used as an octal UART providing eight full-duplex asynchronous communication channels, suitable for various applications requiring multiple serial interfaces.
- What are the supported supply voltages for the SC28L198A1A,518?
The device supports both 3.3V and 5V supply voltages.
- What is the FIFO depth of each UART channel in the SC28L198A1A,518?
Each UART channel has a 16-byte receiver and transmitter FIFO.
- What are the baud rate options for the SC28L198A1A,518?
The device supports baud rates from 50 – 230.4K baud or 100 – 460.8K baud, with additional non-standard rates up to 500K baud.
- What type of package does the SC28L198A1A,518 come in?
The device is packaged in a 100-Pin Plastic Low–Profile Quad Flat Pack (LQFP).
- What is the operating temperature range for the SC28L198A1A,518?
The operating temperature range is -40 °C to +85 °C.
- Does the SC28L198A1A,518 support flow control?
Yes, it supports in-band flow control using programmable Xon/Xoff characters and CTSN/RTSN hardware handshaking.
- What are some of the error detection features of the SC28L198A1A,518?
The device includes parity, framing, and overrun error detection, as well as false start bit detection and line break detection and generation.
- Can the SC28L198A1A,518 be used in power-down mode?
Yes, the device has a power-down mode to conserve power when not in use.
- What is the purpose of the watchdog timer in the SC28L198A1A,518?
The watchdog timer is used for each receiver and counts 64 receive clock counts to ensure proper operation.
