參數(shù)資料
型號: M41T66Q6F
廠商: STMICROELECTRONICS
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, QCC16
封裝: 3 X 3 MM, ROHS COMPLIANT, QFN-16
文件頁數(shù): 31/33頁
文件大小: 336K
代理商: M41T66Q6F
M41T66
Description
Figure 4.
Hardware hookup for SuperCap backup operation
1.
Open drain
2.
For a crystal with a load capacitance (CL) of 12.5 pF, two parallel external 12.5 pF capacitors (C1 and C2)
must be added to achieve better clock accuracy.
3.
It can also be connected to another power supply.
4.
Due to the output buffer circuitry used for the SQW output, this pin must not be taken to a voltage greater
than VCC. Diode required on SQW pin for SuperCap (or battery) backup. Low threshold BAT42 diode
recommended.
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