High-Precision Timing System Based on Microcontroller

Abstract:

The task of timing system is countdown on a set date and showing the time from current date to the setting date to enhance people’s attention and sense of urgency. A kind of high-precision timing system is introduced. The system is controlled by single-chip microcontroller. High integration clock chip is used as clock module. System hardware design and software design are introduced. System hardware design includes design of clock module, its connection with single-chip microcomputer, and the design of display module. System software design includes the settings of single-chip serial port, its initialization, the reading and writing of the clock module, the countdown program and the display program. Compared with other timing system which consists of frequency demultiplication by multivibrator, this system is more stable and reliable. The accumulative error is zero when long-time running continuously. Because the system control module is simple, it is convenient to be developed and utilized. Practice shows that this high-precision timing system can meet practical needs well.

• Periodical: Advanced Materials Research (Volumes 546-547)
• Pages: 131-136
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.546-547.131
• Online since: July 2012
• Authors: Rui Cao
• Keywords: Clock Chip, High-Precision, Microcontroller, Timing

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