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HT1622/HT1622G -- RAM Mapping 32x8 LCD Controller for I/O MCU                              (專利權(quán)核準)

General Description

HT1622 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 HT1622 is a memory mapping and multi-function LCD controller. The software configuration feature of the HT1622 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 HT1622. The HT162X series have many kinds of products that match various applications. 

Features

• Operating voltage: 2.7V~5.2V
• Built-in RC 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 or 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
• 52-pin QFP, 44/64-pin LQFP packages
  HT1622G: Gold bumped chip