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參數(shù)資料
| 型號： | S-3531A |
| 廠商： | Seiko Instruments Inc. |
| 英文描述： | CMOS Real-Time Clock IC Supporting an IIC-Bus(支持IIC-BUS的CMOS實時時鐘芯片) |
| 中文描述： | CMOS實時時鐘IC支持一個IIC總線（支持IIC總線的實時時鐘芯片的CMOS） |
| 文件頁數(shù)： | 31/31頁 |
| 文件大?。?/td> | 185K |
| 代理商： | S-3531A |
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30
Collection of Product FAQs
Author: Shirai Masaaki
Date: 99/04/13 (Tuesday) 14:26 (modified: 99/04/13)
<Information level>
A:
Public (Printing O.K.)
Index:
A: General
<Product>
Division name: 01 IC
Category 1:
17 ASSP
Category 2:
2. Real-Time Clock
Cal No.:
Overall
Related documents:
Question:
Why is an auto calendar available through the year 2099
Answer:
The SII’s RTC denotes the year using its last two digits. These digits are then divided by four, and if
they are divisible the year is determined to be a leap year (the auto calendar determines both 1996 and
2000 to be leap years). The actual calendar, however, does not treat a year with “00” as its last two
digits as a leap year (except for the year 2000; see the following). Accordingly, although 2100 is not a
leap year, the RTC treats it as one. Therefore, this auto calendar is available through 2099.
(Note) A year is defined as a leap year when its last two digits are “00” and its first two digits are
divisible by four.
<Remarks>
FAQ No.: 17S35001
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