Pin No.
Pin name
22 Clamp pulse
input
23 R output
24 G output
25 B output
26 Color killer
filter
Equivalent circuit
VCC
10 kΩ
22
20 µ A
µPC1830
Function descriptions
Matrix clamp pulse input pin.
Clamp operation is performed at
2.8 V or more.
VCC
23
24
25
2 mA
50 Ω
500 Ω
VCC
26
10 kΩ
10 kΩ
Matrix R, G, and B output pins.
DC level is approx. 2.0 V.
Sync. signal component, added to
Y-input (16 pin), appears in R, G,
and B output pins.
Filter connection pin of color killer
sync detector.
27
fSC VCO output
VCC
27
125 Ω
125 Ω
3.3 kΩ
2.9 mA
fSC VCO oscillator output pin.
Connect this pin to pin 28 via a
3.58 MHz oscillation filter and to
pin 29 via a 4.43 MHz oscillation
filter.
8