HT1622 - Holtek Semiconductor Inc

HT1622 RAM Mapping 64 x 16 LCD Controller

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 (32´8). It also supports serial interface, buzzer.

Features

· Operating voltage: 2.7V~5.2V
· Built-in RC oscillator
· 1/4 bias, 1/8 duty, frame frequency is 64Hz
· Max. 32´8 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 or 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
·.