8
Initialization
Before beginning any application, it is recommended that all display settings be initialized. Below are
algorithms for initializing the display in both 8-bit and 4-bit communication modes.
Before
the
first
wait
condition,
please allow
Vcc
to
rise
to
2.7V
then wait
40ms.
During
the
three
function
set
commands
that
follow, note that the busy flag cannot
be checked;
it
becomes
available
in
the
last
block.
The
unit
will
always
expect
a total of 8
bits
to
be
sent,
so
note
the
structure
used
in
four
bit
mode.
The
last
initialization
block
will
set
the
number
of
lines
and
character
font
as
specified,
turn
the display off, issue
the
display
clear
command,
and
finally
set
the
entry
mode
as
desired.
Figure 5: 8-bit Initialization
Figure 6: 4-bit Initialization
Note:
*
Indicates
do
not
care
condition.
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