BU91600FV-M Datasheet, PDF (26/67 Pages) Rohm – Low Duty LCD Segment Driver

BU91600xxx Series MAX 148 Segments (37SEG x 4COM)
Datasheet
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 to 6)
PGx(x=1 to 6)
Px/Gx(x=1 to 6) pin status
Reset
condition
0
PWM output
○
1
General Purpose output
The Px/Gx pin settings take effect only if PWM / General Purpose Output are already set by P0-P4 control bits.
<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 - 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
Start of PWM operation
(PWM waveform on new duty)
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TSZ22111・15・001
26/63
TSZ02201-0P4P0D301300-1-2
16.Feb.2016 Rev.001