參數(shù)資料
型號: S1C621C0D
元件分類: 微控制器/微處理器
英文描述: 4-BIT, MROM, 1.3 MHz, MICROCONTROLLER, UUC74
封裝: DIE-74
文件頁數(shù): 97/108頁
文件大?。?/td> 992K
代理商: S1C621C0D
S1C621C0 TECHNICAL MANUAL
EPSON
81
CHAPTER 7: ELECTRICAL CHARACTERISTICS
7.7 R/F Converter Characteristics
The following characteristics change depending on the conditions (components used, board pattern, etc.).
Use the following characteristics as reference values.
Item
Symbol
Min.
Typ.
Max.
Unit
Condition
R/F conversion counter value
CRS1
CRS2
MC
×0.93
MC
×0.97
-15
MC
×1.07
MC
×1.03
+15
count
1 k
≤ RSEN < 10 k
10 k
≤ RSEN ≤ 2 M
VSS = 0 V, VDD = 3.0 V, fOSC1 = 32.768 kHz, CRF = 2,200 pF, RREF = 10 k
or 50 k, Ta = -40°C to 85°C
The following values do not include errors caused by changing temperature of the external attached elements (RREF, CRF)
Unless otherwise specified:
RREF
[k] + 0.15
RSEN
[k] + 0.15
* MC =
× Measurement counter value
(1) Sensor resistance-Oscillation frequency ratio
Figure 7.7.1 shows the oscillation frequency ratio (ratio of oscillation frequency by the reference resist-
ance to oscillation frequency by the sensor resistance) when the following elements are connected.
(Typ.)
If the R/F conversion uses SEN0 or SEN1, both characteristics will be the same.
Reference resistance (RREF) .................... 10 k
Sensor resistance (RSEN0, RSEN1) ........... 10 k
to 20 M
Oscillating capacitor (CRF) ..................... 2,200 pF
Fig. 7.7.1 Oscillation frequency ratio-resistance curve
1k
0.001
Sensor resistance [
]
Oscillation
frequency
ratio
0.01
0.1
1.0
10k
100k
1M
10M
VDD = 2.2 to 5.5 V
VSS = 0 V
Ta = -40 to 85°C
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