HOLTEK/HT1621B/SSOP-48

RAM maps 32*4 LCD controller chip I/O MCU

Product details

Features

       Operating voltage: 2.4V to 5.2V

       Built-in 256kHz RC oscillator

       Extemal 32.768kHz crystal or 256kHz frequency source input

       Internal time base frequency sourees

       Two selectable buzzer firequencies (2kHz/4kHz)

       Power down command reduces power consumption

       Built-in time base generator and WDT

       Time base or WDT overflow output

       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 LD operating voltage

       HT1621: 44-pin LQFP package

       HT1621B: 48-pin SSOP/LQFP packages

       HT1621G: Gold bumped chip

Selection Table

Pin Assignment

Chip size: 82 x 83 (mil)²

Bump height: 18μm ± 3um

Min. Bump spacing: 23.02μm

Bump size: 76 x 76um²

The IC substrate should be connected to VDD in the PCB layout artwork.

General Description

       The HT1621 is a 128 pattem (324), memory mapping.and multi-function LCD driver,  The S/W configuration feature of the HT1621 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 HT1621.  The HT1621 contains a power down command to reduce power consumption.

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