參數(shù)資料
型號(hào)： HCD44780UA00
廠商： Hitachi,Ltd.
英文描述： 320 x 240 pixel format, CFL backlight available with power harness
中文描述： 點(diǎn)陣式液晶顯示控制器/驅(qū)動(dòng)器
文件頁(yè)數(shù)： 42/59頁(yè)
文件大?。?/td> 316K
代理商： HCD44780UA00
HD44780U
42
Table 12
4-Bit Operation, 8-Digit
×
1-Line Display Example with Internal Reset
Step
No.
Instruction
RS
R/
W
DB7 DB6 DB5 DB4
Display
Operation
1
Power supply on (the HD44780U is initialized by the internal
reset circuit)
Initialized. No display.
2
Function set
0
0
0
0
1
0
Sets to 4-bit operation.
In this case, operation is
handled as 8 bits by initializa-
tion, and only this instruction
completes with one write.
3
Function set
0
0
0
0
0
0
0
0
1
*
0
*
Sets 4-bit operation and
selects 1-line display and 5
×
8
dot character font. 4-bit
operation starts from this step
and resetting is necessary.
(Number of display lines and
character fonts cannot be
changed after step #3.)
4
Display on/off control
0
0
0
0
0
1
0
1
0
1
0
0
_
Turns on display and cursor.
Entire display is in space mode
because of initialization.
5
Entry mode set
0
0
0
0
0
0
0
1
0
1
0
0
_
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.
6
Write data to CGRAM/DDRAM
1
0
0
1
0
1
1
0
0
0
0
0
H_
Writes H.
The cursor is incremented by
one and shifts to the right.
Note:
The control is the same as for 8-bit operation beyond step #6.
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