Pin No.
Pin name
36 Composite
video signal
input
Equivalent circuit
VCC
36
5 kΩ
5 kΩ
µPC1830
Function descriptions
Composite video signal or separate
Y signal input pin. This pin also
serves as a clamp pin.
Input the signal with C coupling.
DC level is approx. 2.3 V.
37 Subcolor
control
38 Contrast
control
39 Sync.
separation
input
VCC
10 kΩ
40 kΩ
70 kΩ
37
38
Decoder color and contrast
adjustment pins.
VCC
5 kΩ
16 kΩ
167 Ω
100 Ω
5 kΩ
VCC
5 kΩ
39
Input pin of sync. separation
circuit.
11