6621

DESCRIPTION 

The UTC 6621 is a 128 patterns (32×4), memory mapping, 

and multi-function LCD driver. Profit from its S/W configuration 

feature, the UTC 6621 is suitable for multiple LCD applications 

including LCD modules and display sub-systems, and only three 

or four lines are required for the interface between the UTC 6621

and its host controller. A power down command is introduced in 

the UTC 6621 to reduce power consumption. 

FEATURES 

* Operating voltage range: 2.4V~5.2V 

* External 32.768kHz crystal or 256kHz frequency source input 

* Built-in 256kHz RC oscillator 

* Internal time base frequency sources 

* Two selectable bias (1/2 or 1/3), and three selectable duty LCD 

applications (1/2 or 1/3 or 1/4). 

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

* Power down command reduces power consumption 

* Built-in time base generator and WDT 

* Time base or WDT overflow output 

* 32×4 LCD driver 

* 8 kinds of time base/WDT clock sources 

* Built-in 32×4 bit display RAM 

* 3-wire serial interface 

* Software configuration feature 

* Internal LCD driving frequency source 

* Data mode and command mode instructions 

* VLCD pin for adjusting LCD operating voltage 

* R/W address auto increment 

* Three data accessing modes 

规格书6621