HT16K24

RAM Mapping 24×4 / 22×6 / 20×8 LCD Controller Driver with Key Scan

General Information

The HT16K24 device is a memory mapping and multi-function LCD controller driver which can be switched to either 1/4, 1/6 or 1/8 duty. The display modes of the device are 96 patterns (24 segments and 4 commons), 132 patterns (22 segments and 6 commons) or 160 patterns (20 segments and 8 commons). It also supports 24×1 (Maximum) key matrix circuit and supports up to 8 segment/GPO shared pin outputs to control other devices. The GPO outputs can be programmed to drive up to 8 LEDs and a set of direct push buzzer output functions.

The software configuration feature of the HT16K24 device makes it suitable for multiple LCD applications including LCD modules and display subsystems. The HT16K24 device communicates with most microprocessors or microcontrollers via a two-line bidirectional I²C-bus.

 

Feature Details

Operating voltage

2.4V~5.5V

Internal 32kHz RC oscillatorAvailable
Bias

1/3 or 1/4; Duty: 1/4, 1/6 or 1/8

Internal LCD bias generation from resistor dividerAvailable
I²C-bus interfaceAvailable
LCD frame frequency

72Hz

Up to 24×8 bits RAM for display data storageAvailable
Various display modes
  • - 24×4 patterns: 24 segments and 4 commons
  • - 22×6 patterns: 22 segments and 6 commons
  • - 20×8 patterns: 20 segments and 8 commons
Key scan function
  • - 24×1 matrix key scanning in 24×4 display mode
  • - 22×1 matrix key scanning in 22×6 display mode
  • - 20×1 matrix key scanning in 20×8 display mode
Eight general purpose output (GPO) ports, can be set to buzzer or LED driver outputAvailable
Four driver output modes

Common, Segment, Key, GPO

Four selectable buzzer frequencies

1kHz, 2kHz, 4kHz, 8kHz

Selectable hardware interruptAvailable
R/W address auto incrementAvailable
Low power consumptionAvailable
Manufactured in silicon gate CMOS processAvailable
Package Types

32-pin QFN

Resources

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