Features:

• Built-in 256kHz RC oscillator
• External 32.768kHz crystal or 256kHz frequency source input
• Selection of 1/2 or 1/3 bias, and selection of 1/2 or 1/3 or 1/4 duty LCD applications
• Internal time base frequency sources
• Two selectable buzzer frequencies (2kHz/4kHz)
• Power down command reduces power consumption
• Built-in time base generator and WDT
• Time base or WDT overflow output
• 8 kinds of time base/WDT clock sources
• 32x4 LCD driver
• Built-in 32x4 bit display RAM
• 3-wire serial interface
• Internal LCD driving frequency source
• Software configuration feature
• Data mode and command mode instructions
• R/W address auto increment
• Three data accessing modes
• VLCD pin for adjusting LCD operating voltage