Interface between DS3231 and 8051 microcontroller

Abstract: This application note provides a hardware circuit and software routine for the interface between a DS3231 and an 8051 microcontroller.

Figure 1. DS3231 pin configuration
Figure 1. Description of the DS3231 pin configuration. This application note describes the connection of the DS3231 and the 8051 microcontroller and provides a basic interface program. The microcontroller used in this article is DS2250, and the software is written in C language. How it works This program uses two general-purpose ports of a microcontroller as the master of the I²C bus, and the DS3231 as a slave device on the same bus. The program can demonstrate the setting and reading of time and date, and can read and display temperature data. Using this software can display the time, date and temperature information on the LCD monitor, here uses a standard HD44780 controller.

Figure 1 and Figure 2 show the pin arrangement and typical circuit of DS3231 respectively. Figure 3 lists the program list.

Figure 2. Typical circuit of DS3231
View larger image Figure 2. Typical circuit of DS3231

Figure 3. Sample software
Download text file Figure 3. Sample software

Road Traffic Signs are graphical symbols that display traffic regulations and road information. They can make traffic regulations visually, concisely and concisely expressed. At the same time, they also express the content that is difficult to describe in words. They are used to manage traffic and indicate the direction of driving to ensure the smooth flow of roads and the safety of driving. Applicable to highways, urban roads and all special highways, with the nature of the law, vehicles, pedestrians must comply with.

Road Traffic Signs

Road Traffic Signs,Traffic Light Sign,Road Safety Signs,Highway Road Traffic Signs

Yangzhou Heli Photoelectric Co., Ltd. , https://www.heli-eee.com

Posted on