HT16H25 Treadmill Display Application Guideline
AN0505E V1.00
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January 8, 2019
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Bias Resistor Set Command
Command
R/W Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0 Def.
Bias Resistor
W
1
1
0
1
0
1
0
0
D4h
W
X
X
X
X
X
X
BR1 BR0
02h
Note: BR[1:0]: Bias resistor value, when the LCD bias circuit is selected as the resistor
divider this instruction is effective
BR1
BR0
Resistor Value
0
0
4KΩ
0
1
8KΩ
1
X
16KΩ(default)
HT16H25 Operating Flow
Initialisation
The device initialisation process is shown in the figure below. After the system is powered
on, first reset the device software then set the Charge Pump circuit according to the
actual design requirements. After this select the LCD Bias circuit, set the LCD driver Bias,
Duty and drive waveforms, and finally set the frame frequency and start the system
oscillator.
Next Processing
Power On
Charge Pump Input Voltage Setting
Software Reset
Charge Pump Control Setting
LCD Bias Circuit Select
Contrast Adjustment Setting
Bias and Duty Setting
Driving Waveform Setting
Frame Frequency Setting