STFPC311 datasheet(17/39 Pages) STMICROELECTRONICS

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STFPC311 Fiches technique(PDF) 17 Page - STMicroelectronics

No de pièce	STFPC311

Description	Front panel controller/driver with standby power management

PDF	39 Pages

Scroll/Zoom	100%

Fabricant	STMICROELECTRONICS [STMicroelectronics]

Site Internet	http://www.st.com

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17 / 39 page

STFPC311

5 Data

17/39

Data

5.1

LED Port

Data is written to the LED port by a WRITE command, starting from the least significant bit of

the port see Figure 12. When a bit of this port is set to 0, the corresponding LED lights up;

when the bit is set to a 1, the LED turns off. The data of Bits 5 through 8 are ignored. Upon first

power-up, all of the LEDs are turned off.

Figure 12. LED port data WRITE command order

5.2

SW Data

The SW data are read by the appropriate READ command, starting from the least significant bit

see Figure 13. Bits 3 through 8 of the SW data are 0.

Figure 13. SW data READ Command order

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