ESC1621

•Operating voltage: 2.4V~5.2V.
•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).
•Built-in time base generator and WDT.
•Time base or WDT overflow output.
•Power down command reduces power Consumption.
•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.

Supply Voltage...................................................................-0.3V ~ 5.5V
Input Voltage................................................. VSS - 0.3V ~ VDD + 0.3V
Storage Temperature..................................................-50°C ~ 125°C
Operating Temperature.................................................-25°C ~ 75°C

Note: These are stress ratings only. Stresses exceeding the range specified under "Absolute Maximum Ratings" may cause substantial damage to the device. Functional operation of this device at other conditions beyond those listed in the specification is not implied and prolonged exposure to extreme conditions may affect device reliability.

The ESC1621 is a 128-pattern (32x4), memory mapping, and multi-function LCD driver. The S/W configuration feature of the ESC1621 makes it suitable for multiple LCD applications including
LCD modules and display subsystems. Only three or four lines are required for the interface between the host controller and the ESC1621. The ESC1621 contains a power down command to reduce power consumption.