BU97981KV-E2 Datasheet, PDF (21/50 Pages) Rohm – Multi-function LCD Segment Drivers

BU97981xxx Series MAX 196 segments (SEG49xCOM4)
Datasheet
Command Detail Descriptions
D/C, Data / Command judgment bit (MSB)
Detail, please refer to 3wire serial I/F
Mode Set (MODESET)
1^st byte command
2^nd byte command
MSB
LSB
D/C D6 D5 D4 D3 D2 D1 D0 Hex Reset
1 0 0 0 0 0 0 1 81h
-
0 0 0 0 P3 P2 P1 P0 -
00h
Display Set
Condition
P3
Reset state
Display OFF
0
○
Display ON
1
Display OFF : No LCD driving mode (Output: VSS Level)
Turn off OSC circuit and LCD power supply circuit. (Synchronized with frame freq)
Display ON : LCD driving mode
Turn on OSC circuit and LCD power supply circuit.
Read data from DDRAM and display to LCD.
LED port and GPO port output state are not influenced by a Display on/off state
Output state is decided by command setup (GPOSET, OUTSET1, OUTSET2, PWM1SET, PWM2SET) and INHb
terminal state. About detail, please refer to each command description.
LCD drive mode set
Condition
Frame inversion
Line inversion
P2
Reset state
0
○
1
Current mode set
Condition
Power save mode1
Power save mode2
Normal mode
High power mode
P1
P0
Reset state
0
0
○
0
1
1
0
1
1
(Reference data of consumption current)
Condition
Current consumption
Power save mode 1
×1.0
Power save mode 2
×1.7
Normal mode
×2.7
High power mode
×5.0
The value changes according to the panel load.
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TSZ02201-0A2A0D300110-1-2
10.Apr.2015 Rev.006