HT16K23 datasheet(4/33 Pages) HOLTEK

4 / 33 page

Rev. 1.00

�a�� 0�� 011

Rev. 1.00

�a�� 0�� 011

HT16K23

RAM Mapping 20*4/16*8 LCD Controller Driver with keyscan

Feature

● Logic voltage: 2.4~5.5V

● Integrated RC oscillator

● Various display modes

– Max. 20*4 patterns, 20 segments, 4 commons, 1/3 bias, 1/4 duty

– Max. 16*8 patterns, 16 segments, 8 commons, 1/4 bias, 1/8 duty

● I2C-bus interface

● Key scan function

– Max. 20*1 matrix key scanning in 20*4 display mode

– Max. 16*1 matrix key scanning in 16*8 display mode

● 16*8 bits RAM for display data storage

● Selectable hardware interrupt

● R/W address auto increment

● Manufactured in silicon gate COMS process

● 28-pin SOP package

Applications

● Industrial control indicator

● Digital clock, thermometer, counter, voltmeter

● Combo set.

● VCR set

● Instrumentation readouts

● Other consumer application

● LCD displays

General Description

The HT16K23 is a memory mapping and multi-function LCD controller driver. The Max. display

segment numbers in the device are 80 patterns (20 segments and 4 commons) or 128 patterns (16

segments and 8 commons). The Max. key scan circuits are 20*1 matrix or 16*1 matrix. The software

configuration feature of the HT16K23 makes it suitable for multiple LCD applications including

LCD modules and display subsystems. The HT16K23 supports a hardware interrupt using register

setting.

The HT16K23 is compatible with most microcontrollers and communicates via a two-line

bidirectional I2C-bus.

HT16K23 Datasheet(PDF) 4 Page - Holtek Semiconductor Inc