- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄378193 > RS5C62 (RICOH COMPANY LTD) REAL-TIME CLOCK PDF資料下載
參數(shù)資料
| 型號(hào)： | RS5C62 |
| 廠商： | RICOH COMPANY LTD |
| 元件分類： | XO, clock |
| 英文描述： | REAL-TIME CLOCK |
| 中文描述： | 1 TIMER(S), REAL TIME CLOCK, PDSO20 |
| 封裝： | SSOP-20 |
| 文件頁數(shù)： | 40/48頁 |
| 文件大?。?/td> | 419K |
| 代理商： | RS5C62 |
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頁當(dāng)前第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
Category
Questions and Answers
Question 4 : Why should you avoid connecting either end of the oscillatory capacitors C
G
and C
D
to the
VSS pin instead of the VDD pin
Question 5 : Synchroscopic observation of the OSCOUT pin output shows that it has an oscillatory
waveform having a small amplitude or approximating to the VDD pin input. What is the cause of this
phenomenon
RP/RF/RS5C62
36
V
DD
Vp-p:Approx.
1.5 to 2.0V
Approx.
2.0V
V
SS
Internal constant voltage output
Sample Measurements of Variations in Oscillation Characteristics of ICs
V
DD
: 5V at room temperature
C
G
: Approx. 10.5pF, C
D
: Approx. 12.5pF
Total of 54 ICs sampled from 6 lots for measurement
Average variation: 0ppm
Standard deviation: 0.630ppm
Number of samples
5
0
10
–10
–5
0
LOT1
LOT2
LOT3
LOT4
LOT5
LOT6
5
10
15
20
25
30
ppm
Answer 4:Because the oscillatory circuit is driven by a constant voltage of 2V relative to the VDD pin,
either one end of the oscillatory capacitors C
G
and C
D
must be connected to the VDD pin with-
out exception. When either one end of the oscillatory capacitors C
G
and C
D
is connected to the
VSS pin instead of the VDD pin, the oscillatory circuit is still operational but subject directly to
fluctuations in the voltage of the system power supply. Under sharp fluctuations between 5V
and battery voltage in particular, the oscillatory circuit may be brought to a temporary stop.
Thus, it is not recommendable to connect either one end of the oscillatory capacitors C
G
and
C
D
to the VSS pin.
Answer 5:To reduce power consumption, the oscillatory circuit is driven by a constant voltage of about 2V
relative to the VDD pin, so that the OSCOUT pin output has an oscillatory waveform shown in
the figure below. Its amplitude will vary slightly depending on the capacitance of the oscillatory
capacitor C
D
. Note that the oscillatory waveform measurements on the OSCOUT pin cannot be
directly applied to adjustment of oscillation frequencies, which are shifted by use of a probe.
(For how to adjust oscillation frequencies, see “4. Adjustment of Oscillation Frequencies” in
“USAGE”.)
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| RSBL-9-S | Using Permanent Magnet, High sensitivity Two Poles Signal Relay RSB RELAYS |
| RSB-12 | Using Permanent Magnet, High sensitivity Two Poles Signal Relay RSB RELAYS |
| RSB-12-S | Using Permanent Magnet, High sensitivity Two Poles Signal Relay RSB RELAYS |
| RSB-24 | Using Permanent Magnet, High sensitivity Two Poles Signal Relay RSB RELAYS |
| RSB-24-S | Using Permanent Magnet, High sensitivity Two Poles Signal Relay RSB RELAYS |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| RS5CLAMP | 制造商:Dialight 功能描述: |
| RS5D | 制造商:LUGUANG 制造商全稱:Shenzhen Luguang Electronic Technology Co., Ltd 功能描述:Surface Mount Rectifiers |
| RS5D-10 | 制造商:TE Connectivity 功能描述: |
| RS5D-10,000 OHMS | 制造商:TE Connectivity 功能描述: |
| RS5D-10000 OHMS | 制造商:TE Connectivity 功能描述: |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。