HT16C21
Application Circuit
Set as Segment pin
● 1/4 Duty
VDD
0.1uF
VDD
VDD
4.7KΩ
4.7KΩ
COM0~COM3
COM0~COM3
SCL
HOST
HT16C21
LCD panel
SDA
SEG0~SEG19
SEG0~SEG19
VSS
VSS
VSS
● 1/8 duty
VDD
0.1uF
VDD
VDD
4.7KΩ
4.7KΩ
COM0~COM7
COM0~COM7
SCL
SDA
HOST
HT16C21
LCD panel
SEG4~SEG19
SEG0~SEG15
VSS
VSS
VSS
Note: 1. If the internal VLCD voltage adjustment function is disabled, the bias voltage is supplied by internal VDD
power.
2. If the internal VLCD voltage adjustment function is enabled, the bias voltage is supplied by the internal
adjusted voltage selected by the DA3~DA0 bits.
Rev. 1.00
24
November 22, 2011