Holtek Semiconductor HT1625
HT1625 is a peripheral device specially designed for I/O type MCU used to expand the display capability.FEATURES
● Operating voltage: 2.7V~5.2V● Built-in RC oscillator
● External 32.768kHz crystal or 32kHz frequency source input
● 1/4 bias, 1/8 duty, frame frequency is 64Hz
● Max. 64´8 patterns, 8 commons, 64 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
● 100-pin LQFP package
GENERAL DESCRIPTION
The max. display segment of the device are 512 patterns (64´8). It also supports