BU91796MUF-M Datasheet, PDF (12/27 Pages) Rohm – Low Duty LCD Segment Driver for Automotive application

BU91796MUF-M MAX 80 segments (SEG20×COM4)
Datasheet
Mode Set (MODESET)
MSB
D7 D6 D5 D4
C
1
0
*
(* : Don‟t care)
Set display ON and OFF.
Setup
Display OFF (DISPOFF)
Display ON (DISPON)
LSB
D3 D2 D1 D0
P3 P2
*
*
P3 Reset initialize condition
0
○
1
Display OFF : Regardless of DDRAM data, all SEGMENT and COMMON output will be stopped after 1frame of
data write. Display OFF mode will be disabled after Display ON command.
Display ON : SEGMENT and COMMON output will be active and start to read the display data from DDRAM.
Set bias level
Setup
P2 Reset initialize condition
1/3 Bias
0
○
1/2 Bias
1
Refer to LCD driving waveform.
Blink Control (BLKCTL)
MSB
LSB
D7 D6 D5 D4 D3 D2 D1 D0
C
1
1
1
0
*
P1 P0
( * : Don‟t care)
Set blink mode.
Blink mode (Hz)
P1 P0 Reset initialize condition
OFF
0
0
○
0.5
0
1
1
1
0
2
1
1
The Blink frequency varies depending on fCLK characteristics at internal clock mode.
Refer to Oscillation Characteristics for fCLK.
All Pixel Control (APCTL)
MSB
LSB
D7 D6 D5 D4 D3 D2 D1 D0
C
1
1
1
1
1 P1 P0
All display set ON, OFF
Setup
Normal
All pixel ON (APON)
P1
Reset initialize condition
0
○
1
Setup
P0
Reset initialize condition
Normal
0
○
All pixel OFF (APOFF) 1
All pixels ON: All pixels are ON regardless of DDRAM data.
All pixels OFF: All pixels are OFF regardless of DDRAM data.
This command is valid in Display on status. The data of DDRAM is not changed by this command.
If set both P1 and P0 =”1”, APOFF will be selected.
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