Overview
The SCC2681AC1N40,112 from NXP USA Inc. is a Dual Universal Asynchronous Receiver/Transmitter (DUART) integrated circuit. This single-chip MOS-LSI communications device provides two independent full-duplex asynchronous receiver/transmitter channels. It is designed to interface directly with microprocessors and can be used in either polled or interrupt-driven systems. The SCC2681 is manufactured using a CMOS process, allowing for efficient operation and low power consumption.
Key Specifications
| Specification | Details |
|---|---|
| Package Type | DIP40 plastic dual in-line package; 40 leads (600 mil) |
| Operating Voltage | +5 V ± 10% |
| Temperature Range | –40 °C to +85 °C (Industrial) |
| Baud Rate Options | Eighteen fixed baud rates, 16× clock derived from a programmable counter/timer, or an external 1× or 16× clock |
| Data Transfer Rate | Up to 1 MB/sec (1×), up to 125 kB/sec (16×) |
| Interrupt System | Single active-LOW interrupt output (INTRN) with Interrupt Mask Register (IMR) and Interrupt Status Register (ISR) |
| Counter/Timer | Programmable counter/timer with six commands and output visible on OP pins or as Rx/Tx clock |
Key Features
- Two independent full-duplex asynchronous receiver/transmitter channels
- Operating mode and data format of each channel can be programmed independently
- Automatic wake-up mode for multidrop applications
- Start-end break interrupt/status and break detection within a character
- On-chip crystal oscillator
- Single +5 V power supply
- Output port can be configured to provide up to six separate wire-ORable interrupt outputs
Applications
The SCC2681AC1N40,112 is suitable for a variety of communication-intensive applications, including:
- Embedded systems requiring multiple serial communication channels
- Industrial control systems
- Networked devices and multidrop configurations
- Microprocessor-based systems needing asynchronous communication capabilities
Q & A
- What is the SCC2681AC1N40,112?
The SCC2681AC1N40,112 is a Dual Universal Asynchronous Receiver/Transmitter (DUART) integrated circuit from NXP USA Inc.
- How many communication channels does it provide?
It provides two independent full-duplex asynchronous receiver/transmitter channels.
- What are the operating voltage and temperature range?
The operating voltage is +5 V ± 10%, and the temperature range is –40 °C to +85 °C (Industrial).
- What are the baud rate options for the SCC2681AC1N40,112?
The baud rate options include eighteen fixed baud rates, a 16× clock derived from a programmable counter/timer, or an external 1× or 16× clock.
- Does the SCC2681AC1N40,112 support interrupt-driven systems?
Yes, it supports both polled and interrupt-driven systems.
- What is the maximum data transfer rate?
The maximum data transfer rate is up to 1 MB/sec (1×) and up to 125 kB/sec (16×).
- Does the SCC2681AC1N40,112 have an on-chip crystal oscillator?
Yes, it has an on-chip crystal oscillator.
- How many interrupt outputs can be configured?
The output port can be configured to provide up to six separate wire-ORable interrupt outputs.
- What are some typical applications for the SCC2681AC1N40,112?
Typical applications include embedded systems, industrial control systems, networked devices, and microprocessor-based systems.
- Is the SCC2681AC1N40,112 suitable for multidrop configurations?
Yes, it supports automatic wake-up mode for multidrop applications.
