HOLTEK
HT1626
RAM Mapping 48x16 LCD Controller for I/O uC
 Features

Operating voltage: 2.7V~5.2V

Time base or WDT overflow output
Built-in RC oscillator Built-in LCD display RAM
External 32.768kHz crystal or 32kHz R/W address auto increment
---frequency source input Two selection buzzer frequencies(2kHz/4kHz)
1/5 bias,1/16 duty,frame frequency is 64Hz Power down command reduces power consumption
Max.48x16 patterns,16 commons,48 segments Software configuration feature
Built-in internal resistor type bias generator Data mode and Command mode instructions
3-wire serial interface Three data accessing modes
8 kinds of time base/WDT selection VLCD pin to adjust LCD operating voltage
Cascade application  
 General Description
HT1626 is a peripheral device specially designed for I/O type uC used to expand the display and for
capability. The max. display segment of the device are 768 patterns (48x16). It also supports serial
interface, buzzer sound, watchdog timer or time base timer functions. The HT1626 is a memory
mappingmulti-function LCD controller. The software configuration feature of the HT1626 make it
suitable for multiple LCD applications including LCD modules and display subsystems. Only three lines
are required the interface between the host controller and the HT1626. The HT162X series have many
kinds of products that match various applications.