Contents

AN4308

2/14

DocID024781 Rev 1

Contents

1

Management of CTLx pins to select operating mode . . . . . . . . . . . . . . 3

2

Application dependent CTLx controlling options . . . . . . . . . . . . . . . . . 5

2.1

CTLx pins controlled by GPIO from embedded controller . . . . . . . . . . . . . 5

2.2

2.3

CTLx pins controlled by signals SUSPEND and AC_ADAPTER . . . . . . . . 7

3

Management of the EN pin to control the power consumption . . . . . . 8

3.1

EN tied to VIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

3.2

EN driven by GPIO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

4

Management of the STCC50x1 attach detector . . . . . . . . . . . . . . . . . . . 9

4.1

EN and ATTACH_EN controlled by GPIOs . . . . . . . . . . . . . . . . . . . . . . . 10

4.2

ATTACH_EN = CTL3, CTLx pins controlled by SLP_Sx signals from

Intel chipset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

5

STCC50x1 application example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

6

Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13