GN1621CB

GN1621 is a memory-mapped, multi-function LCD driver. Its software-configurable features make it suitable for a wide range of LCD applications, including LCD modules and display subsystems. Only 4 or 5 pins are required to interface a host controller with the GN1621, which also supports a power-saving command to reduce system power consumption.

Key features

• Operating voltage: 2.4～5.5V
• Built-in 256kHz RC oscillator
• Optional external 32.768kHz crystal or 256kHz frequency input
• Selectable 1/2 or 1/3 bias and 1/2, 1/3, or 1/4 duty cycle
• On-chip time base frequency source
• Buzzer with two selectable frequencies
• Power-saving command for reduced power consumption
• Built-in time base generator and watchdog timer (WDT)
• Time base or watchdog timer clock source
• Eight time base/watchdog timer clock sources
• 32×4 LCD driver
• Built-in 32×4-bit display RAM
• 4-wire serial interface
• On-chip LCD drive frequency source
• Software-configurable features
• Data mode and command mode instructions
• Three data access modes
• VLCD pin for adjusting LCD operating voltage