LCD Driver Chip HT1621B Features:

• Working Voltage: 2.4V~5.2V

• Internal 256kHz RC oscillator

• 32.768kHz external crystal oscillator or 256kHz external clock source

• Internal timing base clock source

• 2 selectable buzzer frequencies: 2kHz or 4kHz

• Enter power-saving mode to reduce power consumption

• Built-in Timebase Generator and WDT Function

• Time-based or WDT overflow flag output

• 8 Base/WDTP Clock Source Frequency Selection

• 32x4 LCD Display

• Built-in Display Data RAM: 32x4-bit

• 3 Serial Interface

• Provide internal LCD drive clock source

• Software Configuration Features

• Data Pattern and Command Pattern Operation Instructions

• Read/Write Address Auto-Increment

• 3 Data Access Modes

• VLCD pin is used to adjust the LCD operating voltage

• Packaging Type: SSOP-48
  

Pin configuration diagram and block diagram of the LCD driver chip HT1621B:

Limiting Parameters of LCD Driver Chip HT1621B:

• Power Voltage: V_SS-0.3V~V_SS+5.5V

• Input Voltage: V_SS-0.3V~V_DD+0.3V

• Storage Temperature: -50℃ to 125℃

• Operating Temperature: -40℃ to 85℃

DC Electrical Characteristics of LCD Driver Chip HT1621B:

Ta=25℃