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SH69P55A/K55A
66
Application Circuit (for reference only)
AP1:
(1) Operating voltage: 5.0V
(2) Oscillator: Crystal 8MHz
(3) PORTA, PORTF: LED SEG1-8.
PORTD, PORTE.3, PORTE.2: LEDCOM1-6.
PORTA, PORTD are shared as keyscan ports.
PORTG.1 is used as tone output.
PORTI.0 is used as Zero Cross Detect function for AC Power line.
PORTG.0 is used as PWM output.
PORTB are used as ADC ports.
SH69
P5
5A/69
K
55
A
V
DD
OSCI
/PORTC2
OSCO
/PORTC1
V
DD
10uF
10k
8MHz
C3 = 12p
RESET
C4 = 12p
0.1uF
/PORTC3
GND
PORTA.0
PORTA.2
PORTA.1
PORTA.3
PORTF.0
PORTF.2
PORTF.1
PORTF.3
PORTD.0
PORTD.2
PORTD.1
PORTD.3
PORTE.3
PORTE.2
PORTG.1
PORTB
PORTI0
AC power
ADC input
V
DD
R2 = 1k
Q1
SPEAKER
R3 = 1M
Zero detect for AC power line
PWM output
R4
R5
R6
R7
R8
R9
R10
R11
R12
R13
R14
R15
R16
R1
7
R1
8
R1
9
R2
0
PORTG.0
47k X 4
47k X5
2k X 8
0.1uF