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參數(shù)資料
| 型號： | S-3530AECA |
| 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, UUC8 |
| 封裝： | 2.10 X 1.60 MM, DIE-8 |
| 文件頁數(shù)： | 20/34頁 |
| 文件大?。?/td> | 630K |
| 代理商： | S-3530AECA |
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REAL-TIME CLOCK
Rev.1.3_00
S-3530A
Seiko Instruments Inc.
27
3. Adjustment of oscillating frequencies
Matching of a crystal oscillator with the nominal frequency must be performed with parasitic capacitance on
the board included. Select a crystal oscillator and optimize the Cg value in accordance with the flow chart below.
NO
YES
START
Variable
capacity
Select a crystal oscillator.
NO
Is Cg in the
specification ?
*1
*2
Set Cg
NO
Is it an
optimal
value ?
YES
Change Cg
END
YES
Set to the center of
variable capacitor.
Does
the frequency
match ?
NO
YES
Make fine adjustment
of the frequency in
variable capacity.
*3
<Trimer capacitor>
<Fixed capacitor>
*1. For making matching adjustment of the IC with a crystal, contact an appropriate crystal maker to determine
the CL value (load capacity) and RI value (equivalent serial resistance). The CL value
= 6 pF and RI value =
30 k
typ. are recommended values.
*2. Cg value selection must be performed on the actual PCB since parasitic capacitance affects it. Select the Cg
value in a range from 3 pF to 35 pF. If the frequency does not match, change the CL value of the crystal.
*3. Adjust the rotation angle of the variable capacity so that the capacity value is somewhat smaller than the
center, and confirm the oscillating frequency and the center value of the variable capacity. This is done in
order to make the capacity of the center value smaller than one half of the actual capacity value because a
smaller capacity value makes a greater quantity of changes in a frequency. If the frequency does not
match, change the CL value of the crystal.
Caution 1. Oscillating frequencies are changed by ambient temperature and power voltage.
Refer to property samples.
2. The 32 kHz crystal oscillator operates slower at higher or lower ambient temperature than 20
to 25
°°°°C. Therefore, it is recommended to adjust or set the oscillator to operate somewhat
faster at normal temperature.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| S-3531AECA-TB-01 | REAL TIME CLOCK, UUC8 |
| S-35380A-T8T1G | REAL TIME CLOCK, PDSO8 |
| S-35380A-J8T1G | REAL TIME CLOCK, PDSO8 |
| S-35390A-I8T1-G | 1 TIMER(S), REAL TIME CLOCK, PDSO8 |
| S-35390A-J8T1G | 1 TIMER(S), REAL TIME CLOCK, PDSO8 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| S-3530AEFS | 制造商:SII 制造商全稱:Seiko Instruments Inc 功能描述:REAL-TIME CLOCK |
| S-3530AEFS-TB01 | 功能描述:實(shí)時時鐘 實(shí)時時鐘 RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 總線接口:I2C 日期格式:DW:DM:M:Y 時間格式:HH:MM:SS RTC 存儲容量:64 B 電源電壓-最大:5.5 V 電源電壓-最小:1.8 V 最大工作溫度:+ 85 C 最小工作溫度: 安裝風(fēng)格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
| S3534BR-L006-030-E69 | 制造商:Bonitron 功能描述:UNDERVOLTAGE RIDE-THRU PRODUCT |
| S3534CR-E020-00.5-E69 | 制造商:Bonitron 功能描述:UNDERVOLTAGE RIDE-THRU PRODUCT |
| S3534UR-L006-02.0-E66 | 制造商:Bonitron 功能描述:UNDERVOLTAGE RIDE-THRU PRODUCT |
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