HT16C22_LCDControllerDriver.pdf

LCD Controller / Driver
HT16C22
Characteristics
 Operating voltage : 2.4V ~ 5.5V
2
 I C-bus interface
 Two selectable LCD frame frequencies : 80Hz or 160Hz
 Max. 44 segments  4 commons
 Low power consumption (IDD : 27A at 3V、ISTB : 1A at 3V)
 Provides VLCD pin to adjust the LCD operating voltage
 Internal 16-voltage steps for VLCD adjustment
 High EFT capability
 High system ESD capability
 Requires very few external circuit components
LCD Panel
MCU
Interface
with MCU
VDD
SDA
SCL
GND
HT16C22
HT16C22
SEG
Operating Procedure
 Turn on the power switch -- the pictures will then appear sequentially
Application Circuit