16 / 17 page
SC802A
VER2.1
Akihabara Inc. www.akiba-tech.com
Page 16 of 16
Power on
Reset function
At power on, it starts the internal auto-reset circuit and executes the initial instructions .
There are the initial procedures shown as bellows:
8bits interface
Waite time > 15ms after VDD>4.5V
RS R/W D7 D6 D5 D4 D3 D2 D1 D0
0
0
0
0
1
1
X
X
X
X
Wait time > 4.1ms
RS R/W D7 D6 D5 D4 D3 D2 D1 D0
0
0
0
0
1
1
X
X
X
X
Wait time > 100us
RS R/W D7 D6 D5 D4 D3 D2 D1 D0
0
0
0
0
1
1
X
X
X
X
RS R/W D7 D6 D5 D4 D3 D2 D1 D0
0
0
0
0
1
1
N
F
X
X
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
1
I/D S
BF cannot be checked before this instruction
Function set (interface is 8 bits length).
BF cannot be checked before this instruction
Function set (interface is 8 bits length).
BF cannot be checked before this instruction
Function set (interface is 8 bits length).
Initialization end
BF cannot be checked after the following
Instructions
Function set (interface is 8 bits length. specify
The number of display lines and character
Font .) The number of display lines and
character cannot be changed afterwards.
Display off
Display clear
Entry mode set
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