BU9799KV Datasheet, PDF (11/28 Pages) Rohm – Standard LCD Segment Driver

BU9799KV MAX 200 segments (SEG50×COM4)
○Set IC Operation (ICSET)
MSB
LSB
D7 D6 D5 D4 D3 D2 D1 D0
C
1
1
0
1
P2 P1 P0
P2: Define the MSB bit of address of DDRAM. Refer to ADSET command.
Set software reset execution
Setup
P1
No operation
0
Software Reset execute
1
This command will be set initialize condition.
When executed Software reset, P1 and P0 will be ignored.
Set oscillator mode
setup
P0
Reset initialize condition
Internal oscillation
0
○
External clock input
1
Internal oscillation: Must be connected to VSS.
External clock input: Input external clock from OSCIN terminal
Co mm and
OSC IN_E N
(i nte rnal )
I CSE T
Internal OSC mode
External clock mode
Datasheet
INT oscillation
(in terna l)
EXT clock
(OSCIN )
Figure 12. Oscillator mode change timing
○Blink control (BLKCTL)
MSB
LSB
D7 D6 D5 D4 D3 D2 D1 D0
C
1
1
1
0
*
P1 P0
Set blink mode
Blink mode (Hz)
OFF
0.5
1
2
P1 P0 Reset initialize condition
0
0
○
0
1
1
0
1
1
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23.Jan.2015 Rev.003