BU97981KV-E2 Datasheet, PDF (23/50 Pages) Rohm – Multi-function LCD Segment Drivers

BU97981xxx Series MAX 196 segments (SEG49xCOM4)
Datasheet
Address Set (ADSET)
1^st byte Command
2^nd byte Command
MSB
LSB
D/C D6 D5 D4 D3 D2 D1 D0 Hex
1
0 0 0 0 0 1 1 83h
0
0 P5 P4 P3 P2 P1 P0 -
Reset
-
00h
Set start address to write DDRAM data.
The address can be set from 00h to 30h. (Address 31h is used at dummy address)
Do not set other address. (Except 00h to 31h address is not acceptable.)
In case, write data to DDRAM, please send RAMWR command certainly.
Blink Set (BLKSET)
1^st byte Command
2^nd byte Command
MSB
LSB
D/C D6 D5 D4 D3 D2 D1 D0 Hex
1
0 0 0 0 1 0 0 84h
0
0 0 0 0 P2 P1 P0 -
Reset
-
00h
Set Blink ON/OFF.
About detail, please refer to a “Blink function”.
Blink set
Blink mode(Hz)
OFF
1.6
2.0
2.6
4.0
P2 P1 P0
Reset state
0 0/* 0/*
○
1
0
0
1
0
1
1
1
0
1
1
1
*: Don‟t care
Blink Address Set (BLKADSET)
MSB
LSB
D/C D6 D5 D4 D3 D2 D1 D0 Hex
1^st byte Command
1
0 0 0 0 1 1 1 87h
2^nd byte Command
0
0 P5 P4 P3 P2 P1 P0
-
Reset
-
00h
Set Blink data RAM start address to write.
The address can be set from 00h to 30h. (Address 31h is used at dummy address)
Do not set other address. (Except 00h-31h address is not acceptable.)
In case, write data to Blink RAM, please send BLKWR command certainly.
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10.Apr.2015 Rev.006