PCA9420 datasheet(47/87 Pages) NXP

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NXP Semiconductors

PCA9420

Power management IC for low-power microcontroller applications

Bit

Symbol

Default value Type Function

nEN_LDO1_

BLEED

R/W LDO1 Output Active Discharge Turn-on Control in the regulator

disabled

0: Enable output discharge bleeding resistor

1: Disable Output discharge bleeding resistor

nEN_LDO2_

BLEED

R/W LDO2 Output Active Discharge Turn-on Control in the regulator

disabled

0: Enable output discharge bleeding resistor

1: Disable Output discharge bleeding resistor

Table 43. ACT_DISCHARGE_CNTL register bit description...continued

9.5.28 Mode configuration mode setting 0_0 (MODECFG_0_0, address 22h)

This register contains mode setting 0, part 0 configuration register. This is a READ AND

WRITE register.

Bit

Symbol

Default value Type

Function

SHIP_EN_0

R/W

Ship mode enable/disable in mode setting 0

0: Device is NOT set in ship mode

1: Device is set in ship mode

EN_MODE_

SEL_BY_PIN_0

R/W

MODESEL0/MODESEL1 Control Selection in mode setting 0:

0: mode control by internal I2C register bits, MODE0_I2C and/or

MODE1_I2C only; signal applied on external MODESEL0/MODESEL1

pins is ignored.

1: mode control by signal applied on external MODESEL0 and/or

MODESEL1 pins only, not by internal I2C register bits, MODE0_I2C

and MODE1_I2C

[1-bit MTP to set default value]

SW1_OUT_0

[5:0]

010100

R/W

SW1 output voltage for mode setting 0 (see below).

[Note: The default value for SW1 _OUT_0[5:0] is set at 1.00 V, but

it should be MTP programmable.]

Table 44. MODECFG_0_0 register bit description

000000=0.500 V

001110=0.850 V

011100=1.200 V

000001=0.525 V

001111=0.875 V

011101=1.225 V

000010=0.550 V

010000=0.900 V

011110=1.250 V

000011=0.575 V

010001=0.925 V

011111=1.275 V

000100=0.600 V

010010=0.950 V

100000=1.300 V

000101=0.625 V

010011=0.975 V

100001=1.325 V

000110=0.650 V

010100=1.000 V

(default)

100010=1.350 V

Table 45. SW1 output voltage for Mode Setting 0

PCA9420

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Product data sheet

Rev. 4.0 — 28 November 2022

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