HD66421TB0 HITACHI [Hitachi Semiconductor], HD66421TB0 Datasheet - Page 11
HD66421TB0
Manufacturer Part Number
HD66421TB0
Description
(RAM-Provided 160 Channel 4-Level Grey Scale Driver for Dot Matrix Graphics LCD)
Manufacturer
HITACHI [Hitachi Semiconductor]
Datasheet
1.HD66421TB0.pdf
(46 pages)
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System Description
The HD66421 can display a maximum of 160 x
100 dots (ten 16x16-dot characters x 6 lines)
four-level gray scale or four colour LCD panel.
Four levels of gray scale can be selected from
32-levels, so the appropriate 4-level gray scale can
be displayed. And Monochrome display can be
selected from two planes. One plane is displayed
Preliminary
MPU
Figure 1 System Block Diagram
8
COM1 to
COM50
CS
RS
RD
WR
DB7 to DB0
11
while the other plane is being written. The
HD66421 can reduce power dissipation without
affecting display because data is retained in the
display RAM even during standby modes. An
LCD system can be configured simply by
attaching external power supply, capacitors and
resistors
incorporates power circuits.
LCD panel
HD66421
SEG1 to
SEG160
(figure
1)
COM51 to
COM100
since
DC/DC
Convertor
Rev. 1.1E '99.02.10
the
HD66421
HD66421
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