UPD360 datasheet(193/221 Pages) MICROCHIP

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 2016-2017 Microchip Technology Inc.

DS00002084C-page 193

UPD360

13.4.3

POWER SWITCH INTERRUPT STATUS REGISTER (PWR_INT_STS)

Address:

1C02h

Size:

8 bits

Bits

Description

Type

Default

7:6

RESERVED

3V3_ALW to VBUS Switch Interrupt (3V3_ALW2VBUS_INTR)

This interrupt asserts after the power switch automatically transitions from

selecting 3V3_ALW to selecting VBUS as the power source.

Write a ‘1’ to clear this bit. Writes of ‘0’ have no effect.

Note:

Assertion

the

VBUS

Switch

Enable

Override

(VBUS_SW_EN_OVR) bit causes this interrupt to assert.

R/WC

VBUS to 3V3_ALW Switch Interrupt POR (VBUS23V3_ALW_INTR)

This interrupt asserts after the power switch automatically transitions from

selecting VBUS to selecting 3V3_ALW as the power source.

Write a ‘1’ to clear this bit. Writes of ‘0’ have no effect.

Note:

Assertion

the

VBUS

Switch

Enable

Override

(VBUS_SW_EN_OVR) bit prevents assertion of this interrupt when

VBUS is lost and 3V3_ALW is present.

R/WC

3V3_ALW Lost Interrupt (3V3_ALW_LOST_INTR)

This interrupt asserts when 3V3_ALW POR (3V3_ALW_RDY) transitions from

1 to 0. It indicates that the 3V3_ALW supply has been lost.

Write a ‘1’ to clear this bit. Writes of ‘0’ have no effect.

R/WC

3V3_ALW Ready Interrupt (3V3_ALW_RDY_INTR)

This interrupt asserts when 3V3_ALW POR (3V3_ALW_RDY) transitions from

0 to 1. It indicates that a 3V3_ALW supply has been detected.

Write a ‘1’ to clear this bit. Writes of ‘0’ have no effect.

R/WC

VBUS Lost Interrupt (VBUS_LOST_INTR)

This interrupt asserts when 3V3_VBUS POR (VBUS_RDY) transitions from

1to 0. It indicates that the VBUS supply has been lost.

Write a ‘1’ to clear this bit. Writes of ‘0’ have no effect.

R/WC

VBUS Ready Interrupt (VBUS_RDY_INTR)

This interrupt asserts when 3V3_VBUS POR (VBUS_RDY) transitions from 0

to 1. It indicates that a VBUS supply has been detected.

Write a ‘1’ to clear this bit. Writes of ‘0’ have no effect.

R/WC

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