Holtek Semiconductor Inc HT1602 Datasheet
40 Dot Matrix LCD Segment Driver
Features
•
Operating voltage: 4.5V ~5.5V
•
LCD driving voltage: 8V~16V
•
Applicable LCD duty cycle from 1/8 to 1/64
Applications
•
Electronic dictionaries
•
Portable computers
General Description
The HT1602 is a dot matrix LCD segment
driver LSI implemented in CMOS technology . It
is equipped with a 40-bit shift register (two
20-bit shift registers), a 40-bit latch (two 20-bit
latches), a 40-bit level shifter, a 40-bit 4-level
driver, and control circuits.
The HT1602 can convert serial data received
from an LCD controller to parallel data and
HT1602
•
Suitable for various types of LCD panel
•
Bias voltage adjustable from an external
source
•
Remote controllers
•
Calculators
then send them out as LCD drivin g waveform s
to the LCD panel. Th e HT16 02 can be a pplied
up to 1/64 duty. Furthermore, the bias voltage
which determine s the LC D drivi ng voltage can
be optionally supplied from an external source,
thus the chip is suitable for driving various
types of LC D panel. Th ese special features increase the versatility of the chip.
Block Diagram
1 28th Aug ’98
Pad Assignment
HT1602
Chip size: 164 × 164 (mil)
* The IC substrate should be connected to VDD in the PCB layout artwork.
2
Pad Coordinates Unit: mil
Pad No. X Y Pad No. X Y Pad No. X Y
1 –76.23 76.23 19 –16.61 –76.23 37 75.78 42.66
2 –76.23 68.13 20 –8.10 –76.23 38 75.78 61.56
3 –76.23 60.03 21 0.5 –76.23 39 61.20 76.23
4 –76.23 51.93 22 9.10 –76.23 40 52.56 76.23
5 –76.23 43.83 23 17.60 –76.23 41 43.65 76.23
6 –76.23 35.73 24 26.15 –76.23 42 35.10 76.23
7 –76.23 –27.63 25 34.70 –76.23 43 25.20 76.23
8 –76.23 –35.73 26 43.25 –76.23 44 15.71 76.23
9 –76.23 –43.83 27 51.89 –76.23 45 6.66 76.23
10 –76.23 –51.93 28 75.78 –76.23 46 –3.06 76.23
11 –76.23 –60.03 29 75.78 –67.14 47 –12.83 76.23
12 –76.23 –68.13 30 75.78 –56.34 48 –21.60 76.23
13 –76.23 –76.23 31 75.78 –46.62 49 –32.04 76.23
14 –66.33 –76.23 32 75.78 –35.64 50 –42.48 76.23
15 –50.81 –76.23 33 75.78 –24.75 51 –52.92 76.23
16 –42.26 –76.23 34 75.78 –13.32 52 –62.15 76.23
17 –33.71 –7 6.23 35 75.78 6.03
18 –25.16 –7 6.23 36 75.78 33.66
2 28th Aug ’98
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