PCA9420BS datasheet(48/85 Pages) NXP

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NXP Semiconductors

PCA9420

Power management IC for low-power microcontroller applications

Bit

Symbol

Default value Type

Function

Note: reserve 1-bit MTP to set its default value

LDO2_EN_0

R/W

LDO2 Enable Control in mode setting 0:

0: LDO2 disabled

1: LDO2 enabled

Note: reserve 1-bit MTP to set its default value

Table 48. MODECFG_0_2 register bit description...continued

0000: 1.700 V

0011: 1.775 V

0110: 1.850 V

1001 to 1111:1.9V

0001: 1.725 V

0100: 1.800 V

(default)

0111: 1.875 V

0010: 1.750 V

0101: 1.825 V

1000: 1.900 V

Table 49. LDO1 default output voltage for mode setting 0

9.5.31 Mode configuration mode setting 0_3 (MODECFG_0_3, address 25h)

This register contains mode setting 0, part 3 configuration register. This is a READ AND WRITE register.

Bit

Symbol

Default value Type

Function

WD_TIMER_0

[1:0]

R/W

Watchdog timer setting in mode setting 0:

00: Watchdog Timer Disabled

01: Watchdog Timer = 16 s

10: Watchdog Timer = 32 s

11: Watchdog Timer = 64 s

[2-bit MTP to set default value]

LDO2_OUT_0_

OFFSET

R/W

LDO2 output voltage offset selection in mode setting 0:

0: LDO2 Output Voltage = LDO2_OUT_0_LSB[4:0] + 0 V

1: LDO2 Output Voltage = LDO2_OUT_0_LSB[4:0] + 1.2 V

[1-bit MTP to set default value]

LDO2_OUT_0_

LSB

[4:0]

11001

R/W

LDO2 default output voltage for mode setting 0 (see below).

Note: The default value for LDO2_OUT_0_LSB [4:0] is set at 3.3 V,

but it should be MTP programmable.

Table 50. MODECFG_0_3 register bit description

00000=1.500 V

01001=1.725 V

10010=1.950 V

00001=1.525 V

01010=1.750 V

10011=1.975 V

00010=1.550 V

01011=1.775 V

10100=2.000 V

00011=1.575 V

01100=1.800 V

10101=2.025 V

00100=1.600 V

01101=1.825 V

10110=2.050 V

00101=1.625 V

01110=1.850 V

10111=2.075 V

Table 51. LDO2 default output voltage for mode setting 0

PCA9420

All information provided in this document is subject to legal disclaimers.

Product data sheet

Rev. 4.2 — 26 July 2023

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PCA9420BS Datasheet(PDF) 48 Page - NXP Semiconductors

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