LCX028ALT
Input Equivalent Circuit
To prevent static charges, protective diodes are provided for each pin except the power supplies. In addition,
protective resistors are added to all pins except the video signal inputs. All pins are connected to VSS with a
high resistor of 1MΩ (typ.). The equivalent circuit of each input pin is shown below: (Resistance value: typ.)
(1) VSIG1 to VSIG12, PSIG
HVDD
Input
1MΩ
(2) HCK1, HCK2
HVDD
250Ω
Input
250Ω
1MΩ
(3) RGT
Input
HVDD
2.5kΩ
(4) HST
Input
HVDD
250Ω
(5) PCG, VCK
Input
VVDD
250Ω
Signal line
250Ω
250Ω
1MΩ
Level conversion circuit
(2-phase input)
Level conversion circuit
(2-phase input)
2.5kΩ
1MΩ
Level conversion circuit
(single-phase input)
250Ω
Level conversion circuit
(single-phase input)
1MΩ
250Ω
1MΩ
Level conversion circuit
(single-phase input)
(6) VST, BLK, ENB, DWN, VB1, VB2
VVDD
Input
2.5kΩ
(7) COM, COML, COMR
VVDD
Input
2.5kΩ Level conversion circuit
(single-phase input)
1MΩ
LC
1MΩ
(8) HVDD, VSSG, VVDD
Input
1MΩ
–5–
are all Vss.