BU97930MUV_15 Datasheet, PDF (16/32 Pages) Rohm – Multifunction LCD Segment Driver

BU97930MUV MAX 108 segments (SEG27×COM4)
○RAM WRITE (RAMWR)
1st byte Command
2nd byte Command
n byte Command
MSB
D/C D6
1
0
D5 D4 D3 D2
1
0
0
0
Display data
….
Display data
LSB
D1 D0 Hex
0
0 A0h
Reset
-
Random
Random
Input data, sending after 1st byte command, are used as Display data. And display data are sent every 4 bits. Please set
this command after the ADSET command.
○Blink RAM WRITE (BLKWR)
MSB
LSB
D/C D6 D5 D4 D3 D2 D1 D0 Hex
1st byte Command
1
1
0
0
0
0
0
0 C0h
2nd byte Command
Blink data
….
n byte Command
Blink data
Reset
-
Random
Random
Input data, sending after 1st byte command, are used as Display data. And display data are sent every 4 bits.
Please set this command after the BLKADSET command.
○All Pixel ON (APON)
1st byte Command
MSB
LSB
D/C D6 D5 D4 D3 D2 D1 D0 Hex
1
0
0
1
0
0
0
1 91h
Reset
-
After sending the command, all SEG outputs set display on state regardless of the DDRAM data.
(This command affects the SEG output terminals only (except GPO and LED output)
○All Pixel OFF (APOFF)
1st byte Command
MSB
LSB
D/C D6 D5 D4 D3 D2 D1 D0 Hex
1
0
0
1
0
0
0
0 90h
Reset
-
After sending the command, all SEG outputs set display off state regardless of the DDRAM data.
(This command affects the SEG output terminals only (except GPO and LED output)
○All Pixel ON/OFF mode off (NORON)
MSB
LSB
D/C D6 D5 D4 D3 D2 D1 D0 Hex
1st byte Command
1
0
0
1
0
0
1
1 93h
After sending the command, all SEG outputs are released from APON/APOFF state.
And SEG port output signal follows DDRAM data.
(This command affects the SEG output terminals only (except GPO and LED output)
After reset sequence or SWRESET, all outputs set NORON state.
○Software Reset (SWRST)
MSB
LSB
D/C D6 D5 D4 D3 D2 D1 D0 Hex
1st byte Command
1
0
0
1
0
0
1
0 92h
After sending the command, device is set to default state.
Reset
-
Reset
-
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TSZ02201-0A0A2D300060-1-2
10.Apr.2015 Rev.004