- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄384875 > R2033T (Ricoh Co., Ltd.) 3 wire interface Real-Time Clock ICs PDF資料下載
參數(shù)資料
| 型號： | R2033T |
| 廠商： | Ricoh Co., Ltd. |
| 英文描述： | 3 wire interface Real-Time Clock ICs |
| 中文描述： | 3線接口實時時鐘芯片 |
| 文件頁數(shù)： | 29/50頁 |
| 文件大?。?/td> | 542K |
| 代理商： | R2033T |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁當(dāng)前第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁
R2033K/T
Measurement of Oscillation Frequency
29
Frequency
Counter
OSCIN
OSCOUT
32KOUT
VSS
32768Hz
VDD
CLKC
* 1) The R2033K/T is configured to generate 32.768-kHz clock pulses for output from the 32KOUT pin.
* 2) A frequency counter with 6 (more preferably 7) or more digits on the order of 1ppm is recommended for
use in the measurement of the oscillation frequency of the oscillation circuit.
Adjustment of Oscillation frequency
The oscillation frequency of the oscillation circuit can be adjusted by varying procedures depending on the
usage of Model R2033K/T in the system into which they are to be built and on the allowable degree of time count
errors. The flow chart below serves as a guide to selecting an optimum oscillation frequency adjustment
procedure for the relevant system.
Start
Course (B)
Use 32-kHz clock output without regard
to its frequency precision
NO
YES
Use 32-kHz
clock output
YES
NO
Course (C)
Course (A)
Course (D)
YES
YES
NO
NO
Allowable time count precision on order of oscillation
frequency variations of crystal oscillator (*1) plus
frequency variations of RTC (*2) (*3)
Allowable time count precision on order of oscillation
frequency variations of crystal oscillator (*1) plus
frequency variations of RTC (*2) (*3)
* 1) Generally, quartz crystal units for commercial use are classified in terms of their center frequency
depending on their load capacitance (CL) and further divided into ranks on the order of
±
10,
±
20, and
±
50ppm
depending on the degree of their oscillation frequency variations.
* 2) Basically, Model R2033K/T is configured to cause frequency variations on the order of
±
5 to
±
10ppm at
25
°
C.
* 3) Time count precision as referred to in the above flow chart is applicable to normal temperature and actually
affected by the temperature characteristics and other properties of quartz crystal units.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| R2043T | 4-wire Serial Interface |
| R2043T-E2 | 4-wire Serial Interface |
| R2043K | 4-wire Serial Interface |
| R2043K-E2 | 4-wire Serial Interface |
| R3111Q181B | LOW VOLTAGE DETECTOR |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| R2033T-E2 | 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:3 wire interface Real-Time Clock ICs |
| R203426000 | 功能描述:RF 連接器 SSMB(M) STR NA PCB RoHS:否 制造商:Bomar Interconnect 產(chǎn)品:Connectors 射頻系列:BNC 型式:Jack (Female) 極性: 觸點電鍍:Gold 阻抗: 端接類型:Solder 主體類型:Straight Bulkhead 電纜類型: |
| R203426000W | 功能描述:RF 連接器 EMB DR CI RoHS:否 制造商:Bomar Interconnect 產(chǎn)品:Connectors 射頻系列:BNC 型式:Jack (Female) 極性: 觸點電鍍:Gold 阻抗: 端接類型:Solder 主體類型:Straight Bulkhead 電纜類型: |
| R203553000 | 功能描述:RF 連接器 SSMB(M) STR BH SP RoHS:否 制造商:Bomar Interconnect 產(chǎn)品:Connectors 射頻系列:BNC 型式:Jack (Female) 極性: 觸點電鍍:Gold 阻抗: 端接類型:Solder 主體類型:Straight Bulkhead 電纜類型: |
| R203665000 | 功能描述:RF 連接器 SSMB(M)R/A PCB NC PN RoHS:否 制造商:Bomar Interconnect 產(chǎn)品:Connectors 射頻系列:BNC 型式:Jack (Female) 極性: 觸點電鍍:Gold 阻抗: 端接類型:Solder 主體類型:Straight Bulkhead 電纜類型: |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。