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參數資料
| 型號： | V30208TSS |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | Ultra Low Power 1-Bit 32 kHz RTC |
| 中文描述： | 超低功耗1位32 kHz的時鐘 |
| 文件頁數： | 5/14頁 |
| 文件大?。?/td> | 470K |
| 代理商： | V30208TSS |
5
Typical Frequency on I/O Pin
+80
+30
-20
-70
-120
-170
+3
+2
+1
0
-1
-2
s/day
Address 10 hex = 00 hex
Quartz with 8.2 pF load capacitance
External trimming capacitor between X and V [pF]
O
T
[ C]
A
Typical drift for ideal 32'768 Hz quartz
Note :
The trimming capacitor value must not exceed 15 pF.
Greater values may disturb the oscillator function.
Fig. 5
-50
-30
-10
+10 30
50
70
90
0
3
6
9
12
15
[ppm]
D
F
F
o
Quartz Characteristics
= the ratio of the change in frequency to the nominal value
expressed in ppm (It can be thought of as the frequency
deviation at any temperature.)
= the temperature of interest in C
= the turnover temperature (25 ± 5 C)
To determine the clock error (accuracy) at a given temperature, add
O
the frequency tolerance at 25 C to the value obtained from the
formula above.
Fig. 6
[ppm]
-100
-200
-300
-400
T - 100
T - 50
Temperature [ C]
O
O
T [ C]
T
O
T +50
T +100
D
F
F
o
D
F
F
o
ppm
O
C
2
=-0.038
(T - T ) ±10%
D
F/F
o
T
T
O
F
m
mx
V3020
R
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| V3020SO8A | 制造商:EMMICRO 制造商全稱:EM Microelectronic - MARIN SA 功能描述:Ultra Low Power 1-Bit 32 kHz RTC |
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| V3020TP8B | 制造商:EMMICRO 制造商全稱:EM Microelectronic - MARIN SA 功能描述:Ultra Low Power 1-Bit 32 kHz RTC |
| V3020XSO8A | 制造商:EMMICRO 制造商全稱:EM Microelectronic - MARIN SA 功能描述:Ultra Low Power 1-Bit 32 kHz RTC |
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