HT16C22 Datasheet, PDF (1/30 Pages) Holtek Semiconductor Inc – RAM Mapping 44*4 LCD Controller Driver

HT16C22/HT16C22G
RAM Mapping 44*4 LCD Controller Driver
Features
● Operating voltage:2.4~5.5V
● Internal 32kHz RC oscillator
● Bias: 1/2 or 1/3; Duty: 1/4
● Internal LCD bias generation with voltage-follower buffers
● I²C-bus interface
● Two Selectable LCD frame frequencies: 80Hz or 160Hz
● 44 x 4 bits RAM for display data storage
● Max. 44 x 4 patterns, 44 segments and 4 commons
● Versatile blinking modes
● R/W address auto increment
● Internal 16-step voltage adjustment to adjust LCD operating voltage
● Low power consumption
● Provides VLCD pin to adjust LCD operating voltage
● Manufactured in silicon gate CMOS process
● Package Type: 48LQFP, 52QFP, chip and COG.
Applications
● Electronic meter
● Water meter
● Gas meter
● Heat energy meter
● Household appliance
● Games
● Telephone
● Consumer electronics
General Description
The HT16C22/HT16C22G device is a memory mapping and multi-function LCD controller driver. The maximum
Display segments of the device are 176 patterns (44 segments and 4commons). The software configuration feature
of the HT16C22/HT16C22G makes it suitable for multiple LCD applications including LCD modules and display
subsystems. The HT16C22/HT16C22G device communicates with most microprocessors / microcontrollers via a
two-line bidirectional I²C-bus.
Rev. 1.20
1
May 10, 2011