STP1612PW05QTR STMicroelectronics, STP1612PW05QTR Datasheet - Page 19

• Manufacturer Part Number: STP1612PW05QTR
• Description: 16-channel Led Driver With 16-bit Pwm, 8-bit Gain And Full Led Error Detection
• Manufacturer: STMicroelectronics

STP1612PW05
9.2
Synchronization for PWM counting
The data synchronization between the incoming data flow and the output channels is
managed through the bit A within the configuration register.
If the bit A is set to “0” the device performs itself the data synchronization: when all the new
data are loaded with a “global latch”, the device wait until all the PWM counter completes
the counting cycle before updating them with the new data, at the next CLK rising edge.
Conversely, if bit A is set to “1” (default), the data synchronization is not performed by the
device and is managed by the microcontroller, which has to take care of the data and
signals. If this is not done, there might be artefacts on the output image.
Figure 9.
Figure 10. Without synchronization for PWM counting
PWCLK
CLK
PWCLK
CLK
Synchronization for PWM counting
Doc ID 15819 Rev 2
Setting the PWM gray scale counter
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