HT16K23
RAM Mapping 20*4/16*8 LCD Controller Driver with keyscan
Feature
Logic voltage: 2.4~5.5V
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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
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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
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R/W address auto increment
Manufactured in silicon gate COMS process
28-pin SOP package
Applications
Industrial control indicator
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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. 1.00
4
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HOLTEK [ HOLTEK SEMICONDUCTOR INC ]
