HT16220 -- RAM Mapping 32x8 LCD Controller for I/O MCU
(PATENTED)

General Description

HT16220 is a peripheral device specially designed for I/O type MCU used to expand the display capability. The max. display segment of the device are 256 patterns (32x8). It also supports serial interface, buzzer sound, watchdog timer or time base timer functions. The HT16220 is a memory mapping and multi-function LCD controller. The software configuration feature of the HT16220 make it suitable for multiple LCD applications including LCD modules and display subsystems. Only three lines are required for the interface between the host controller and the HT16220. The HT162X series have many kinds of products that match various applications.

Features

  • Operating voltage: 2.7V~5.2V
  • External Crystal 32.768kHz oscillator
  • 1/4 bias, 1/8 duty, frame frequency is 64Hz
  • Max. 32x8 patterns, 8 commons,
    32 segments
  • Built-in internal resistor type bias generator
  • 3-wire serial interface
  • 8 kinds of time base/WDT selection
  • Time base or WDT overflow output
  • Built-in LCD display RAM
  • R/W address auto increment
  • Two selectable buzzer frequencies (2kHz/4kHz)
  • Power down command reduces power consumption
  • Software configuration feature
  • Data mode and Command mode instructions
  • Three data accessing modes
  • VLCD pin to adjust LCD operating voltage
  • HT16220: 64pin LQFP package
    HT16220G: Gold bumped chip

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