PCA9420 datasheet(30/87 Pages) NXP

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NXP Semiconductors

PCA9420

Power management IC for low-power microcontroller applications

Bit

Symbol

Default value Type

Function

RSVD

W/C

Reserved bit

ICHG_DEAD_TIMER_INT

W/C

Dead charge timer expiration Interrupt

0: The dead charge timer expiration has not happened

since last time this bit was cleared

1: The dead charge timer expiration has happened since

last time this bit was cleared

For more details, see Figure 10

VIN_ILIM

W/C

Input Current Limit Interrupt

0: no Input current limit has been triggered since the last

time this bit is cleared;

1: input current limit event is triggered since last time this bit

is cleared.

ICHG_FAST_TIMER

W/C

Fast Charging Timer Expiration Interrupt

0: The fast charging timer expiration has not happened

since the last time this bit was cleared.

1: The fast charging timer expiration has happened since

the last time this bit was cleared.

ICHG_PREQ_TIMER

W/C

Pre-qualification Charging Timer Expiration Interrupt

0: The pre-qual charging timer expiration has not happened

since the last time this bit was cleared.

1: The pre-qual charging timer expiration has happened

since the last time this bit was cleared.

BATTERY_DETECTION

W/C

Battery presence Interrupt

0: The VBAT_DET_OK bit has not changed since the last

time this bit was cleared.

1: The VBAT_DET_OK bit has changed since the last time

this bit was cleared.

VBAT

W/C

Battery Interrupt

0: The VBAT_OK bit has not changed since the last time

this bit was cleared.

1: The VBAT_OK bit has changed since the last time this bit

was cleared.

CHG_OK

W/C

Charger Status Interrupt

0: The CHG_OK bit has not changed since the last time this

bit was cleared.

1: The CHG_OK bit has changed since the last time this bit

was cleared

Table 13. Sub_INT1 register bit description

9.5.6 Sub level interrupt_1 mask (Sub_INT1_Mask, address 05h)

This is a READ AND WRITE register.

Bit

Symbol

Default

value

Type

Function

RSVD

R/W

Reserved bit

Table 14. Sub_INT1_Mask register bit description

PCA9420

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Product data sheet

Rev. 4.0 — 28 November 2022

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