CT-161-CD Fujitsu Semiconductor America Inc, CT-161-CD Datasheet - Page 90

• Manufacturer Part Number: CT-161-CD
• Description: KIT 16LX FOR MB90F387
• Manufacturer: Fujitsu Semiconductor America Inc
• Series: F²MC-16LXr
• Type: MCUr

Specifications of CT-161-CD

• Contents: Board, Cable, CD
• For Use With/related Products: MB90F387S
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 865-1103

shows the peripheral circuit diagram of the "temperature sensor" on the Starter Kit board. In this
circuit, when the resistance of the "temperature sensor" changes, the input voltage of the A/D
converter of the microcomputer also changes. Suppose the resistance of the "temperature sensor" is
R
formula. (The necessary knowledge to calculate it is only Ohm's law.)
TH
. Then, the input voltage of the A/D converter V
Figure 8-2 Peripheral circuit diagram of "temperature sensor" (image)
Table 8.3
voltage summarizes the relationship between the measured temperature from 5 to 50
[Input voltage of the A/D converter]
Because R=10[k Ω ] and Vcc ＝ 5.0[V],
the input voltage to the A/D converter V
formula.
According to the Ohm's law, the current in the circuit I is as shown below:
Therefore, V
Figure 8-2 Peripheral circuit diagram of "temperature sensor" (image)
Relationship between the measured temperature of Starter Kit and A/D input
Microcomput
I
V
V
=
AN
AN
AN1
R
1
1
=
=
V
+
AD
AD
is
CC
R
10000
R
er
TH
TH
5.0
×
×
I
+
R
=
TH
R
R
TH
R
TH
-
+
84
×
R
Pin AN1
-
V
TH
CC
AN1
AN1
[V] can be obtained by using the following
GND
can be calculated by using the following
Vcc
GND
V
Starter Kit board
AN1
R=10[k Ω ]
Temperature
sensor
R=10 k Ω
GND
R
TH
Vcc=5.0[V]
I
© Fujitsu
o
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