FEDL9042-01
OKI Semiconductor
ML9042-xx
Note 3:
Note 4:
OSC1
OSC1
OSC1
OSCR3
OSCR5
OSC2
OSCR3
OSCR5
OSC2
OSCR3
OSCR5
OSC2
Rf = 85 kΩ±2%
The wire between OSC1 and Rf and the wire between The wire between OSCR3 and OSC2, or between OSCR5
OSC2 and Rf should be as short as possible.
Keep OSCR3 and OSCR5 open.
and OSC2 should be as short as possible. Keep open
between OSC1 and OSCR3, or between OSC1 and OSCR5.
Note 5:
tHW
tLW
VDD
2
VDD
2
VDD
2
fIN
waveform
Applied to the pulses entering from the OSC1 pin
fduty = tHW/(tHW + tLW) ×100 (%)
Note 6:
0.8VDD
0.2VDD
0.8VDD
0.2VDD
trf
tff
Applied to the pulses entering from the OSC1 pin
Note 7: The maximum value of the voltage multiplier input voltage should be set at 2.75 V, and the
minimum value of the voltage multiplier input voltage should be set by monitoring the voltage
of V0 in actual use so that the voltage multiplier output voltage meets the specification for the
bias voltage for driving LCD after contrast adjustment.
Note 8: For 1/4 bias, V2 and V3B pins are short-circuited. V3A pin is open.
For 1/5 bias, V3A and V3B pins are short-circuited. V2 pin is open.
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