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| 摘要: |
| 介绍了实时时钟芯片X1 2 0 3的结构、外围电路及其工作原理 ,阐述了以单片机和X1 2 0 3所构成的低成本定时控制器在广告牌系统、门禁系统中的应用。并举例说明对X1 2 0 3内部寄存器、I2 C总线串行数据通信的编程方法 |
| 关键词: 实时时钟,I2C总线,‘Y2K’,备用电源,门禁系统 |
| DOI： |
| 分类号:TN492 |
| 基金项目: |
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| The Serial Real Time Clock Chip X1203 and its Application |
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LI Xi_hua 1 WANG Yi_xian 2
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| Abstract: |
| The structure,external circuit and working principle of real time clock chip X1203 are introduced.The applications of low_cost timing controller which consists of single chip computer and X1203,in billboard system and door_prohibiting system are illustrat |
| Key words: real time clock,I 2C bus,Y2k,standby power supply,door prohibits system |
