Figure 4-7 Circuit Surrounding The Voltage Adjustment Knob - Fujitsu F2MC-8FX Series User Manual

MB95F136JBS

Figure 4-7 Circuit surrounding the voltage adjustment knob

In the starter kit, the circuit is configured as shown in "Figure 4-7 Circuit surrounding the voltage
adjustment knob", and adjusting this volume switch changes the value of the voltage applied, and
applies this voltage to the pins that perform the A/D conversion. The applied voltage can be digitally
converted in 256 steps, and handled as internal signals. In this sample program, the size of the
applied voltage is obtained using an A/D converter, and the buzzer sound changes according to this
value.
16
AN01
GND
70
AN07-00200-03E
VCC5
可変抵抗
Variable resistance
(ボリュームSW)
(Volume switch)