HT16K23_1107 Datasheet, PDF (1/30 Pages) Holtek Semiconductor Inc – RAM Mapping 20*4/16*8 LCD Controller Driver with keyscan

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.
Rev. 1.10
1
July 01, 2011