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參數(shù)資料
| 型號： | S-35L32AEFSG |
| 元件分類： | 時鐘/數(shù)據(jù)恢復及定時提取 |
| 英文描述： | REAL TIME CLOCK, PDSO10 |
| 封裝： | 0.50 MM PITCH, PLASTIC, SSOP-10 |
| 文件頁數(shù)： | 24/37頁 |
| 文件大?。?/td> | 502K |
| 代理商： | S-35L32AEFSG |
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REAL-TIME CLOCK
S-35L32A
Rev.1.3_00
30
Seiko Instruments Inc.
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>
Figure 26 Crystal oscillation setting flow
*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.
DISCONTINUED
PRODUCT
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| S-35L32AEFS-TB | 功能描述:實時時鐘 REAL TIME CLOCK 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: 安裝風格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
| S35PF | 制造商:MICROSEMI 制造商全稱:Microsemi Corporation 功能描述:Silicon Power Rectifier |
| S35-RO | 功能描述:撥動開關 3PDT ON-MOM 15A RoHS:否 制造商:C&K Components 觸點形式:DPDT 開關功能:ON - ON - ON 電流額定值: 電壓額定值 AC:20 V 電壓額定值 DC:20 V 功率額定值:0.4 VA 端接類型:V-Bracket 安裝風格: 端子密封:Epoxy 觸點電鍍:Gold 照明:Not Illuminated |
| S35T | 制造商:Enhance Technology 功能描述:STORPACK, 3X5.25" HDDS - Bulk |
| S3-5V | 制造商:Panasonic Electric Works 功能描述: |
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