Hi,all
TLC59108 has 8 output, but 8 group LED light is not at the same time,is't it ?
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I'm not sure I fully understand the question. There are several ways to impact brightness on the TLC59108. The Group controls do control all 8 outputs together. The individual pins can be dimmed with their own PWM. Table 11 shows the IREF register which can be used to dim all outputs as well.
Regards,
Dick
Can You share your source code for TLC59108 to control the LEDs. It will save time to spent on other things