Adobe Acrobat Reader must be installed on your computer in order to view these files. To obtain a free copy of Acrobat Reader follow this link to the Adobe web site. Now you can download the whole catalog of THAT integrated circuit datasheets in one fell swoop. I'm posting this for a customer who asked for a minimal example of the time from a DS1302 and the temperature from a DS1620 being displayed on a Parallax 4x20 Serial LCD Display. I already had example code for displaying the Day, Date and Temperature on a 2x16 Display in my Binary / Digital Clock Project .

电子元件查询网查出的ds1302资料有ds1302 pdf和ds1302 datasheet,有多个芯片厂家的清晰datasheet资料,方便工程师快速阅读。 This subject comes up pretty frequently actually. I wish Maxim would publish more information in the datasheet for the DS1302 so customers would understand why this happens. The typical issue with the clock accuracy is that the clock is running fast, as is the case here. This is usually caused by improper mounting of the crystal in the system.