PCA9420BS datasheet(32/85 Pages) NXP

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NXP Semiconductors

PCA9420

Power management IC for low-power microcontroller applications

Bit

Symbol

Default value Type

Function

RSVD

R/W

Reserved bit

VOUTSW1 _MASK

R/W

VOUTSW1 Voltage Interrupt Mask bit

0: Not Masked

1: Masked

VOUTSW2 _MASK

R/W

VOUTSW2 Voltage Interrupt Mask bit

0: Not Masked

1: Masked

VOUTLDO1 _MASK

R/W

VOUTLDO1 Voltage Interrupt Mask bit

0: Not Masked

1: Masked

VOUTLDO2_MASK

R/W

VOUTLDO2 Voltage Interrupt Mask bit

0: Not Masked

1: Masked

Table 16. Sub_INT2_Mask register bit description...continued

08h register: Reserved

9.5.9 Top level control_0 (TOP_CTL0, address 09h)

This register contains various configuration bits for top level related functions, part 0. This is a READ AND

WRITE register.

Bit

Symbol

Default value Type

Function

7:5

VIN_ILIM_SEL

[2:0]

010

R/W

VIN input current limit selection: (min/typ/max)

000: 74 mA/85 mA/98 mA, (another default setting by MTP)

001: 222 mA/255 mA/293 mA

010: 370 mA/425 mA/489 mA (default setting)

011: 517 mA/595 mA/684 mA

100: 665 mA/765 mA/880 mA

101: 813 mA/935 mA/1075 mA

110: 961 mA/1105 mA/1271 mA

111: Input current limit disabled

Note: VIN_ILIM_SEL [1] is the only bit that is MTP configurable

OPERATION_SEL_

FROM_SHIPMODE

R/W

Ship mode wakeup configuration setting

0: upon VIN plug in, the chip enables the battery charging

process, AND starts the power-up sequence for LDO1/LDO2/

SW1/SW2 per the setting

1: upon VIN plug in, the chip enables the charging process,

LDO1/LDO2/SW1/SW2 remains in shutdown mode and the chip

enables only the power-up sequence upon ON pin falling edge

Note: This bit is MTP configurable

PWR_DN_EN[1]

R/W

Power-down Sequence Enable

0: Do not start power-down sequence

1: Start power-down sequence

nEN_CHG_IN_

WATCHDOG

R/W

Configure operations in a programmed watchdog timer expired

0: When the programmed watchdog timer expires, the following

operations take place.

Table 17. TOP_CNTL0 register bit description

PCA9420

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Product data sheet

Rev. 4.2 — 26 July 2023

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