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參數(shù)資料
| 型號： | S1C60L05D |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 4-BIT, MROM, 0.08 MHz, MICROCONTROLLER, UUC53 |
| 封裝： | DIE-53 |
| 文件頁數(shù)： | 96/104頁 |
| 文件大?。?/td> | 697K |
| 代理商： | S1C60L05D |
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S1C60N05 TECHNICAL MANUAL
EPSON
83
APPENDIX: TECHNICAL INFORMATION
How to obtain
capacitor value and
oscillation frequency
The standard resistor and the thermistor are oscillated according
to S1C60N05 A/D converter principles. It is necessary to
determine the value of the external capacitor for the oscillation.
This section describes how to determine the standard resistor
value, the external capacitor value and the CR oscillation fre-
quency.
Table A.1
Item
Standard resistor
value (R1)
Computation of
capacitor for
oscillation
Computation of
frequency from the
standard resistance
Description
Thermistor resistance value at the standard
temperature.
The relationship between the frequency,
capacitor, and the resistor is as follows:
f =
K
f: Oscillation frequency
CR
K: CR oscillation frequency
coefficient
C: Capacitor
R: Resistance
From the equation above, C can be obtained
based on f and K conditions of S1C60N05.
If the C value is smaller within the conditions,
the precision is higher.
If the C value is determined by the above
equation, the frequency (fCR1) by the standard
resistance can be obtained by the following
equation:
fCR1 (kHz) =
K
CR1
Thermistor 103AT usage example
At 25
°C, the 103AT resistance is 10 k.
Thus the standard resistance is 10 k
.
The f and K conditions of S1C60N05 are as follows:
f(max) = 85 kHz (limit of IC operation)
1
≤K≤3 (Oscillation coefficient in S1C60N05)
With these conditions, the following equation can be
derived:
85 kHz
≥
K
CR2(TMAX)
R2(TMAX): Minimum resistance of Thermistor
K=3 is the worst condition, then
C
≥
3
85
×103×2.23×103
= 15,800 (pF)
As a result, the following is determined:
C = 22,000 (pF) (Value for general purpose product)
The following is obtained:
fCR1 =
(1 to 3)
22,000
×10-12×10×103
= 4.5 to 13.5 (kHz)
By the above equations, the capacitor value (22,000 pF) and the
oscillation frequency (4.5–13.5 kHz) by the standard resistance are
determined.
For the details of 103AT, see Appendix C.
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相關(guān)代理商/技術(shù)參數(shù) |
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| S1C60L08 | 制造商:EPSON 制造商全稱:EPSON 功能描述:4-bit Single Chip Microcomputer |
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| S1C60N16 | 制造商:EPSON 制造商全稱:EPSON 功能描述:4-bit Single Chip Microcomputer |
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