HD66766R Datasheet, PDF (75/97 Pages) Hitachi Semiconductor – 132 x 176-dot Graphics LCD Controller/Driver for 65K Colors

HD66766R
Rev. 1.0-1 / September 2002
Example 2: 1/176 duty ratio, Vcc = VREFL = 2.4V, Vci = 2.8V, 1/13 bias
BS2-0 = H’8
: bias adjustment 1.4 times
BT2-0 = H’4
BT3 = H’1
: step-up circuit 1 2 times step-up circuit 2 5 times
: operate voltage inverting circuit
DC2-0 = H’6
TBD
: step-up circuit 1 frequency 32 clocks step-up circuit 2 frequency 128 clocks
AP1-0 = H’1
: low fixed current in the amplifier
VC2-0 = H’4
: internal Vci1 regulator off 2.8V directly supplied to Vci1
VR3-0 = H’2
: VREFM = 1.4 x VREFL
CT6-0
: appropriate contrast setting values
Example 3: Partial display, 1/24 duty ratio, Vcc = 2.4V, Vci = 2.8V, 1/4 bias
BS2-0 = H’0
: bias adjustment 1.25 times
BT2-0 = H’0
: step-up circuit 1 2 times step-up circuit 2 2 times
BT3 = H’1 : operate voltage inverting circuit
DC2-0 = H’6
TBD
: step-up circuit 1 frequency 64 clocks step-up circuit 2 frequency 128 clocks
AP1-0 = H’1
: low fixed current in the amplifier
VC2-0 = H’4
: internal Vci1 regulator off
VR3-0 = H’2
: VREG 1 = 1.4 x VREFL
CT6-0
: appropriate contrast setting values
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