BU9795AFV-LB Datasheet, PDF (18/29 Pages) Rohm – Standard LCD Segment Drivers

BU9795AFV-LB MAX 108 segments (SEG27×COM4)
2. Start sequence example 2
Initialize
DISPON
Initialize Sequence
DISPON Sequence
RAM write
RAM write Sequence
DISPOFF
DISPOFF Sequence
Datasheet
This LSI is initialized with Initialize Sequence. And start to display with DISPON Sequence.
This LSI will update display data with RAM write Sequence.
And stop the display with DISPOFF sequence.
If you want to restart to display, This LSI will restart to display with DISPON Sequence.
Initialize sequence
Input
DATA
D7 D6 D5 D4 D3 D2 D1 D0
Power on
wait 100us
CSB 'H'
CSB 'L'
ICSET
11101010
MODESET 1 1 0 0 0 0 0 0
ADSET
00000000
Display Data * * * * * * * *
…
CSB 'H'
Description
IC initialized
I/F initialized
Software Reset
Display OFF
RAM address set
Display data
DISPON sequence
Input
DATA
D7 D6 D5 D4 D3 D2 D1 D0
CSB 'L'
DISCTL
10111111
BLKCTL
11110000
APCTL
11111100
MODESET 1 1 0 0 1 0 0 0
CSB 'H'
Description
Display Control
BLKCTL
APCTL
Display ON
RAM write sequence
Input
DATA
D7 D6 D5 D4 D3 D2 D1 D0
CSB 'L'
DISCTL
10111111
BLKCTL
11110000
APCTL
11111100
MODESET 1 1 0 0 1 0 0 0
ADSET
00000000
Display Data * * * * * * * *
…
CSB 'H'
Description
Display Control
BLKCTL
APCTL
Display ON
RAM address set
Display data
DISPOFF sequence
Input
DATA
D7 D6 D5 D4 D3 D2 D1 D0
CSB 'L'
MODESET 1 1 0 0 0 0 0 0
CSB 'H'
Description
Display OFF
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26.Feb.2014 Rev.002