RAM Mapping 56*4 / 52*8 LCD Driver Controller
(HT16C23 EOL)
(HT16C23G EOL)

The HT16C23/HT16C23G device is a memory mapping and multi-function LCD controller driver.
The Display segments of the device are 224 patterns (56 segments and 4commons) or 416 patterns (52
segments and 8commons). The software configuration feature of the HT16C23/HT16C23G device
makes it suitable for multiple LCD applications including LCD modules and display subsystems.
The HT16C23/HT16C23G device communicates with most microprocessors / microcontrollers via a
two-line bidirectional I2C-bus.


  • Operating voltage: 2.4 ~ 5.5V
  • Internal 32kHz RC oscillator
  • Bias: 1/3 or 1/4; Duty:1/4 or 1/8
  • Internal LCD bias generation with voltage-follower buffers
  • I2C-bus interface
  • Two Selectable LCD frame frequencies: 80Hz or 160Hz
  • Up to 52 x 8 bits RAM for display data storage
  • Display patterns:
    – 56 x 4 patterns: 56 segments and 4 commons
    – 52 x 8 patterns: 52 segments and 8 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, 64LQFP and COB package.