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參數(shù)資料
| 型號(hào)： | AN1759 |
| 廠商： | 飛思卡爾半導(dǎo)體(中國(guó))有限公司 |
| 英文描述： | Add a Non-Volatile Clock to the MC68HC705J1A |
| 中文描述： | 添加非易失時(shí)鐘的MC68HC705J1A |
| 文件頁(yè)數(shù)： | 1/24頁(yè) |
| 文件大?。?/td> | 316K |
| 代理商： | AN1759 |
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Motorola, Inc., 1998
AN1759
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AN1759
Add a Non-Volatile Clock to the MC68HC705J 1A
By Mark Glenewinkel
Field Applications Engineering
Consumer Systems Group
Austin, Texas
Introduction
Many embedded systems require the measurement of time. This can be
accomplished internally by some MCUs that have on-chip real-time
clocks. Even so, for date, month, and leap year measurement, this task
can take substantial amounts of bandwidth and code space.
The DS1307 64x8 serial real-time clock provides calendar and time
keeping functions along with system-enhancing non-volatile RAM. With
a 2-wire interface, timekeeping can be managed easily.
Some applications of using the DS1307 are:
Logging of chronological events
Tracking power down time of a system
Providing alarm functions
F
For More Information On This Product,
Go to: www.freescale.com
n
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