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Last update: 2004-03-05 12:03

　

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General Descriptions

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 includ-

ing 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.

Features

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Operating voltage: 2.4V~5.2V.

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Built- in 256kHz RC oscillator.

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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.

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Two selectable buzzer frequencies (2kHz/4kHz).

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Built- in time base generator and WDT.

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Time base or WDT overflow output.

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Power down command reduces power Consumption.

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8 kinds of time base/WDT clock sources.

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32x4 LCD driver.

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Built- in 32x4 bit display RAM.

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3-wire serial interface.

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Internal LCD driving frequency source.

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Software configuration feature.

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Data mode and command mode instructions.

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R/W address auto increment.

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Three data accessing modes.

•

VLCD pin for adjusting LCD operating voltage.

RAM Mapping 32 X 4 LCD Controller for I/O uC