Part Number : HT1621D
Function : for I/O MCU
Package : DIP 28 Pin Type
Maker : Holtek Semiconductor
Pinouts : 
Description :
The HT1621D is a 128 pattern (324), memory mapping, and multi-function LCD driver. The S/W configuration feature of the HT1621 makes it suitable for multiple LCD applications including LCD modules and display subsystems.
Only three or four lines are required for the in terface between the host controller and the HT1621.
The HT1621 contains a power down command to reduce power consumption.
Block Diagram
Features
1. Operating voltage: 2.4V~5.2V
2. Built-in 256kHz RC oscillator
3. External 32.768kHz crystal or 256kHz frequency source input
4. Selection of 1/2 or 1/3 bias, and selection of 1/2 or 1/3 or 1/4 duty LCD applications
5. Internal time base frequency sources
6. Two selectable buzzer frequencies (2kHz/4kHz)
7. Power down command reduces power consumption
8. Built-in time base generator and WDT
Datasheet PDF Download : 
Others datasheet of same file : HT1621, HT1621B, HT1621D
