BU97530KVT Datasheet, PDF (18/59 Pages) Rohm – Built-in OSC circuit

BU97530KVT
Datasheet
10. PG1, PG2, PG3, PG4, PG5, PG6, PG7, PG8 and PG9: PWM/General Purpose output switching control data
This control data bit select either PWM output or General Purpose output of Sx/Px/Gx pins. (x=1～9)
PGx(x=1～9)
Mode
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
PWM/GPO output
GPO ‐‐‐> PWM change
new duty decided timing
start of PWM operation
(PWM waveform in immediate duty)
next PWM cycle
(PWM waveform in new duty)
In order to avoid this operation, please input commands in reverse as below.
SCE
DD:11
DD:10
DD:01
DD:00
PWM/GPO output
new duty decided timing
GPO ‐‐＞PWM change
Start of PWM operation
(PWM waveform on new duty)
11. PF0, PF1, PF2, and PF3: PWM output waveform frame frequency switching control data
These control data bits set the frame frequency for PWM output waveforms.
PF0
PF1
PF2
PF3
PWM output Frame Frequency fp(Hz)
0
0
0
0
fosc / 4096
0
0
0
1
fosc / 3840
0
0
1
0
fosc / 3584
0
0
1
1
fosc / 3328
0
1
0
0
fosc / 3072
0
1
0
1
fosc / 2816
0
1
1
0
fosc / 2560
0
1
1
1
fosc / 2304
1
0
0
0
fosc / 2048
1
0
0
1
fosc / 1792
1
0
1
0
fosc / 1536
1
0
1
1
fosc / 1280
1
1
0
0
fosc / 1024
1
1
0
1
fosc / 768
1
1
1
0
fosc / 512
1
1
1
1
fosc / 256
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TSZ22111・15・001
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TSZ02201-0P4P0D300570-1-2
02.Mar.2015 Rev.003