參數(shù)資料
型號： MSM62X42BRS
廠商： OKI ELECTRIC INDUSTRY CO LTD
元件分類： 時鐘/數(shù)據(jù)恢復(fù)及定時提取
英文描述： REAL TIME CLOCK, PDIP18
封裝： 0.300 INCH, PLASTIC, DIP-18
文件頁數(shù)： 9/27頁
文件大?。?/td> 210K
代理商： MSM62X42BRS
Semiconductor
MSM62X42B
57
APPLICATION NOTE
Power Supply
Pattern Layout
The oscillation circuit of 32.768kHz consists of high impedance in the oscillation stage to
realize the minimum current consumption. In addition, it is a feature that the time when the
oscillation waveform passes the threshold vicinity is long. For this reason, the power supply
anti-noise by the same method as an analog IC must be considered. As an actual example,
set a tantalum capacitor (4.7
F) and a ceramic capacitor (0.01F) near this IC. In case that an
another IC, for instance, RAM for backup, exists in battery backup circuit, set a bypass
capacitor close to it.
Maximum value of allowable power supply noise should be 300mV.
Start
Power On
TEST bit
REST bit
24/12 bit
STOP bit
REST bit
24/12 bit
Set the current Time
HOLD bit
STOP bit
Start Operation
VDD= 0 to VDD= 5V
All registers and STD,P
output=undefined
*1=*2(=1 or 0)
¨
0
1
*1
1
0
*2
¨
0
¨
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