STP1612PW05 datasheet(19/35 Pages) STMICROELECTRONICS

Part #	STP1612PW05

Description	16-channel LED driver with 16-bit PWM, 8-bit gain and full LED error detection

PDF	35 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

Logo

19 / 35 page

STP1612PW05

Setting the PWM gray scale counter

Doc ID 15819 Rev 4

19/35

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.

Synchronization for PWM counting

Figure 10.

Without synchronization for PWM counting

CLK

PWCLK

CLK

PWCLK

STP1612PW05 Datasheet(PDF) 19 Page - STMicroelectronics