HT1602L
40 Dot Matrix LCD Segment Driver
Features
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Operating voltage: 2.7V~5.5V
LCD driving voltage: 3.0V~5.2V
Applicable LCD duty from 1/8 to 1/16
Suitable for various types of LCD panel
Bias voltage adjustable from an external
source
Applications
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Interface with HT163A
Electronic dictionaries
Portable computers
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Remote controllers
Calculators
General Description
The HT1602L is a dot matrix LCD segment
driver LSI implemented in CMOS technology.
The chip contains 40-bit shift register (two 20-
bit shift registers), 40-bit latch (two 20-bit
latches), 40-bit level shifter, 40-bit 4-level
driver and control circuits.
The HT1602L can convert serial data received
from an LCD controller parallel data and then
send them out as LCD driving waveforms to the
LCD panel. The chip is applicable up to 1/16
duty. Furthermore, the bias voltage which de-
termines the LCD driving voltage can be option-
ally supplied from an external source, thus the
chip is suitable for driving various LCD panel.
These special features increase the versatility
of the chip.
Block Diagram
1
27th Aug ’98
HOLTEK [ HOLTEK SEMICONDUCTOR INC ]
