BU97931FV-LB Datasheet, PDF (16/32 Pages) Rohm – Multifunction LCD Segment Driver

BU97931FV-LB MAX 112 segments (SEG28×COM4)
Datasheet
8. RAM WRITE (RAMWR)
1st byte Command
2nd byte Command
MSB
D/C D6
1
0
n byte Command
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.
9. Blink RAM WRITE (BLKWR)
MSB
LSB
D/C D6 D5 D4 D3 D2 D1 D0 Hex Reset
1st byte Command
1
1
0
0
0
0
0
0 C0h
-
2nd byte Command
Blink data
Random
・・・・
n byte Command
Blink data
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.
10. 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 affect to the SEG output terminal only except GPO and LED output.)
11. 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 outputs.)
12. 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
Reset
-
After sending the command, all SEG outputs are released from APON/APOFF state.
And SEG port outputs signal follows DDRAM data.
(This command affects the SEG output terminals only except GPO and LED output.)
After reset sequence or SWRESET, all outputs are set to NORON state.
13. 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
Reset
-
After sending the command, device is set to the default state.
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26.Feb.2014 Rev.002