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參數(shù)資料
| 型號(hào)： | S-3511A |
| 廠商： | Seiko Instruments Inc. |
| 英文描述： | CMOS Real-Time Clock IC（3 Lines）(3線，CMOS實(shí)時(shí)時(shí)鐘芯片) |
| 中文描述： | CMOS實(shí)時(shí)時(shí)鐘IC（3線）（3線，實(shí)時(shí)時(shí)鐘芯片的CMOS） |
| 文件頁數(shù)： | 19/31頁 |
| 文件大?。?/td> | 183K |
| 代理商： | S-3511A |
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Real-Time Clock
S-3511A
18
Seiko Instruments Inc.
3.
Adjustment of oscillating frequencies
Matching of a crystal oscillator with the nominal frequency must be performed with suspended capacity on the board included. Select a
crystal oscillator and optimize the Cg value in accordance with the flow chart below.
(*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 capacity). The CL value = 6pf and RI value = 30K TYP. are recommended
values.
(*2)
Cg value selection must be performed on the actual PCB since suspended capacity affects it. Select the Cg value in a
range from 3pf to 35pf. 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.
Note 1 :
Oscillating frequencies are changed by ambient temperature and power voltage. Refer to property samples.
Note 2 :
The 32KHZ 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.
NO
YES
START
Variable
capacity
Select a crystal oscillator.
NO
Is Cg in the
specification
(*1)
(*2)
Cg set
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)
(*3)
<Trimer capacitor>
<Fixed capacitor>
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PDF描述 |
|---|---|
| S-3511 | REAL-TIME CLOCK |
| S-3511AEFS | REAL-TIME CLOCK |
| S-3520CF | REALTIME CLOCK |
| S-3530A | CMOS Real-Time Clock IC Supporting an IIC-Bus(支持IIC-BUS的CMOS實(shí)時(shí)時(shí)鐘芯片) |
| S-3530 | REAL-TIME CLOCK |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| S-3511AEFS | 制造商:SII 制造商全稱:Seiko Instruments Inc 功能描述:REAL-TIME CLOCK |
| S-3511AEFS-TB01 | 功能描述:實(shí)時(shí)時(shí)鐘 實(shí)時(shí)時(shí)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(shí)間格式:HH:MM:SS RTC 存儲(chǔ)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 |
| S-35-12 | 制造商:MEANWELL 制造商全稱:Mean Well Enterprises Co., Ltd. 功能描述:S-350-12 350W 12V 29A 單路輸出明緯開關(guān)電源 |
| S35120 | 制造商:Microsemi Corporation 功能描述:STD RECOVERY RECTFR 1.2KV 70A 2PIN DO-203AB - Bulk |
| S35140 | 制造商:Microsemi Corporation 功能描述:STD RECOVERY RECTFR 1.4KV 70A 2PIN DO-203AB - Bulk |
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