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HD44780U Datasheet(PDF) 40 Page - Hitachi Semiconductor

Part # HD44780U
Description  Dot Matrix Liquid Crystal Display Controller/Driver
Download  59 Pages
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Manufacturer  HITACHI [Hitachi Semiconductor]
Direct Link  http://www.renesas.com/eng
Logo HITACHI - Hitachi Semiconductor

HD44780U Datasheet(HTML) 40 Page - Hitachi Semiconductor

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HD44780U
40
Table 11
8-Bit Operation, 8-Digit
× 1-Line Display Example with Internal Reset
Step
Instruction
No.
RS
R/
W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0 Display
Operation
1
Power supply on (the HD44780U is initialized by the internal
reset circuit)
Initialized. No display.
2
Function set
00
001
100
*
*
Sets to 8-bit operation and
selects 1-line display and 5
× 8
dot character font. (Number of
display lines and character
fonts cannot be changed after
step #2.)
3
Display on/off control
00
000
011
10
_
Turns on display and cursor.
Entire display is in space mode
because of initialization.
4
Entry mode set
00
000
001
10
_
Sets mode to increment the
address by one and to shift the
cursor to the right at the time of
write to the DD/CGRAM.
Display is not shifted.
5
Write data to CGRAM/DDRAM
10
010
010
00
H_
Writes H. DDRAM has already
been selected by initialization
when the power was turned on.
The cursor is incremented by
one and shifted to the right.
6
Write data to CGRAM/DDRAM
10
010
010
01
HI_
Writes I.
7·
·
·
·
·
·
·
·
·
·
8
Write data to CGRAM/DDRAM
10
010
010
01
HITACHI_
Writes I.
9
Entry mode set
00
000
001
11
HITACHI_
Sets mode to shift display at
the time of write.
10
Write data to CGRAM/DDRAM
10
001
000
00
ITACHI _
Writes a space.


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