LED7708 datasheet(41/53 Pages) STMICROELECTRONICS

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LED7708 数据表(PDF) 41 Page - STMicroelectronics

部件名	LED7708

功能描述	16 channels x 85 mA LED driver with boost controller and 4-wire serial interface

PDF	53 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

标志

41 / 53 page

LED7708

Recommended operating conditions

Doc ID 022698 Rev 1

41/53

8.6.2

Dimming waveforms

Normal dimming mode

In normal timing mode the basic cycle is represented by a latency period followed by a

dimming period starting with the on-phase (current generators active). This option is

selected by clearing the DTIN (dimming timing inversion) bit of the DEVCGF1 register.

Figure 13.

Normal timing mode waveforms

Inverted dimming mode

In inverted dimming mode, the basic cycle is represented by a latency period followed by a

dimming period starting with the off-phase (current generators turned off). This option,

normally used when a common turn-off is required, is selected by asserting the DTIN

(dimming timing inversion) bit of the DEVCGF1 register.

Figure 14.

Inverted timing mode waveforms

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