LED7708 datasheet(32/53 Pages) STMICROELECTRONICS

Part #	LED7708

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

PDF	53 Pages

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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32 / 53 page

Recommended operating conditions

LED7708

32/53

Doc ID 022698 Rev 1

1x256-bit data format (BDFS=1, BRLS=1)

This option allows a complete brightness data transfer in a single 256-bit write operation.

The brightness registers BRT01:BRT16 are simultaneously loaded at the falling edge of the

LE signal. Only 65536 steps (16-bit) brightness control is supported by this data format.

Figure 10.

256-bit data format, write operation to the brightness registers

1x192-bit data format (BDFS=1, BRLS=0)

The brightness registers BRT01:BRT16 are simultaneously loaded at the end of a single

192-bit single write operation. This option is similar to the 1x256-bit format but optimizes the

serial bus communication when 12 bits only are used for the brightness control.

Figure 11.

192-bit data format, write operation to the brightness registers

LED7708 Datasheet(PDF) 32 Page - STMicroelectronics