- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄384875 > R2043T-E2 (RICOH COMPANY LTD) 4-wire Serial Interface PDF資料下載
參數(shù)資料
| 型號(hào)： | R2043T-E2 |
| 廠商： | RICOH COMPANY LTD |
| 元件分類： | XO, clock |
| 英文描述： | 4-wire Serial Interface |
| 中文描述： | REAL TIME CLOCK, PDSO10 |
| 封裝： | 4 X 2.9 MM, 1 MM HEIGHT, TSSOP-10 |
| 文件頁數(shù)： | 28/48頁 |
| 文件大小： | 458K |
| 代理商： | R2043T-E2 |
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頁當(dāng)前第28頁第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
R2043K/T
O
Measurement of Oscillation Frequency
12345
Rev.2.06 - 28 -
Frequency
Counter
OSCIN
OSCOUT
32KOUT
VSS
32768Hz
VDD
* 1)
* 2)
The R2043K/T is configured to generate 32.768-kHz clock pulses for output from the 32KOUT pin.
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.
O
Adjustment of Oscillation frequency
The oscillation frequency of the oscillation circuit can be adjusted by varying procedures depending on the usage
of Model R2043K/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, crystal oscillators 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 R2043K/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 crystal oscillators.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| R2043K | 4-wire Serial Interface |
| R2043K-E2 | 4-wire Serial Interface |
| R3111Q181B | LOW VOLTAGE DETECTOR |
| R3111Q191A | LOW VOLTAGE DETECTOR |
| R3111Q191B | LOW VOLTAGE DETECTOR |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| R20440 | 制造商:Microsemi Corporation 功能描述:STD RECOVERY RECTFR 400V 12A 2PIN DO-4 - Bulk |
| R2045D | 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:4-wire Serial Interface Real Time Clock Module |
| R2045S | 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:4-wire Serial Interface Real Time Clock Module |
| R20460 | 制造商:Microsemi Corporation 功能描述:STD RECOVERY RECTFR 600V 12A 2PIN DO-4 - Bulk |
| R20480 | 制造商:Microsemi Corporation 功能描述:STD RECOVERY RECTFR 800V 12A 2PIN DO-4 - Bulk |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。