Nuvoton ARM Cortex-M NuMicro NUC472 Series, User Manual, Page: 28 / 37

MuMaker-PFM-NUC472
June 17, 2016 Page 28 of 37 Rev 1.00
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UC47
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Push Buttons 4.10
Figure 4-10 shows the push buttons circuit for the NUC472 series MCU.
Figure 4-10 Push Buttons Circuit
Buzzer 4.11
Figure 4-11 shows the buzzer circuit for the NUC472 series MCU.
Figure 4-11 Buzzer Circuit
Keys
KXI_1
KXI_0
PC_12
PC_13
KXI_1
KXI_0
SW2 SW SW1 SW
Buzzer
R46
33
R0603
BZ1
LF-MB12A05(2400Hz)
1
2
BUZZER
VCC
Q3
S8550 (PNP)
1
2
3
PD_11
BUZZER
S8550
BUZZER
1
Base
3
Collector
2
Emitter