參數(shù)資料
型號: S-3530AECA
元件分類: 時(shí)鐘/數(shù)據(jù)恢復(fù)及定時(shí)提取
英文描述: REAL TIME CLOCK, UUC8
封裝: 2.10 X 1.60 MM, DIE-8
文件頁數(shù): 18/34頁
文件大?。?/td> 630K
代理商: S-3530AECA
REAL-TIME CLOCK
Rev.1.3_00
S-3530A
Seiko Instruments Inc.
25
Adjustment of Oscillating Frequency
1. Configuration of the oscillating circuit
Since crystal oscillation is sensitive to external noises (clock accuracy is affected), the following measures are
essential for optimizing your oscillating circuit configuration:
(1) Place S-3530A, crystal oscillator and external capacitor (Cg) as close to each other as possible.
(2) Make high the insulation resistance between pins and the substrate wiring patterns of XIN and XOUT.
(3) Do not place any signal or power lines close to the oscillating circuit.
XIN
XOUT
Cg
S-3530A
Cd
Rd
Rf
Crystal oscillator:32,768 Hz
CL
=6 pF
Cg
=3 to 35 pF
Oscillating circuit internal constant standard
values:
Rf
=20 M
Rd
=220 k
Figure 24 Connection diagram
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