BU97600XXX Datasheet, PDF (23/63 Pages) Rohm – AEC-Q100 Qualified

BU97600xxx Series
Datasheet
8. SC: Segment on/off switching control data
This control data bit controls the on/off state of the segments.
SC
Display state
0
On
1
Off
Note that when the segments are turned off by setting SC to “1”, the segments are turned off by outputting segment
off waveforms from the segment output pins.
9. BU0,BU1 and BU2: Normal mode/power-saving mode switching control data
These control data bits select either normal mode or power-saving mode.
BU0
BU1
BU2
Mode
OSC Oscillator
Segment outputs
Common outputs
Output Pin States During Key Scan Standby
KS1 KS2 KS3 KS4 KS5
0
0
0 Normal
Operating
Operating
H
H
H
H
H
0
0
1
L
L
L
L
H
0
1
0
L
L
L
H
H
0
1
1
1
0
0
1
0
1
Power-
saving
Stopped
Low(VSS)
L
L
H
H
H
L
H
H
H
H
H
H
H
H
H
1
1
0
H
H
H
H
H
1
1
1
H
H
H
H
H
Power-saving mode status: S5/P1/G1 to S20/P16/G16 = active only General Purpose output
S21 to S22 = low (VSS)
KS1/S23 to KS5/S27 = low (VSS)
KI1/S32 to KS4/S35 = low (VSS)
PWMIN/S36 = low (VSS)
OSCIN/S37 = low (VSS)
COM1 to COM4 = low (VSS)
Stop the LCD drive bias voltage generation circuit
Stop the Internal oscillation circuit
However, serial data transfer is possible when at Power-saving mode.
10. PG1, PG2, PG3, PG4, PG5 and PG6 : PWM/General Purpose output switching control data
This control data bit select either PWM output or General Purpose output of Px/Gx pins. (x=1～6)
PGx(x=1～6)
Px/Gx pin status
0
PWM output
1
General Purpose output
<PWM<->GPO Changing function>
Normal behavior of changing GPO to PWM is below.
- PWM operation is started by command import timing of DD: 01 during GPO -Æ PWM change.
- Please take care of reflect timing of new duty setting of DD: 10 and DD: 11 is from the next PWM.
SCE
DD: 00
DD: 01
DD: 10
DD: 11
GPO ‐‐‐> PWM change
new duty decided timing
PWM/GPO output
start of PWM operation
(PWM waveform in immediate duty)
In order to avoid this operation, please input commands in reverse as below.
SCE
DD:11
DD:10
DD:01
DD:00
next PWM cycle
(PWM waveform in new duty)
new duty decided timing
GPO ‐‐＞PWM change
PWM/GPO output
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TSZ22111・15・001
Start of PWM operation
(PWM waveform on new duty)
23/60
TSZ02201-0P4P0D300960-1-2
02.Apr.2015 Rev.002