HT1621
Key Features
- Operating voltage: 2.4V~5.2V
- Built-in 256kHz RC oscillator
- External 32.768kHz crystal or 256kHz frequency source input
- Internal time base frequency sources
- Two selectable buzzer frequencies (2kHz/4kHz)
- Power down mand reduces power consumption
- Built-in time base generator and WDT
- Time base or WDT overflow output
- 8 kinds of time base/WDT clock sources
- 32´4 LCD driver
