PCA9420BS datasheet(45/85 Pages) NXP

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NXP Semiconductors

PCA9420

Power management IC for low-power microcontroller applications

Bit

Symbol

Default value Type

Function

RSVD

Reserved bit

RSVD

Reserved bit

RSVD

Reserved bit

Table 42. REG_STATUS register bit description...continued

9.5.27 Active Discharge Regulator control (ACT_DISCHARGE_CNTL, address 21h)

This register stores the control functions of the SW1, SW2, LDO1, LDO2. This is a READ AND WRITE register.

Bit

Symbol

Default value Type Function

RSVD

R/W Reserved bit

RSVD

R/W Reserved bit

RSVD

R/W Reserved bit

RSVD

R/W Reserved bit

nEN_SW1_BLEED 0

R/W SW1 Output Active Discharge Turn-on Control in the regulator disabled

0: Enable output discharge bleeding resistor

1: Disable Output discharge bleeding resistor

nEN_SW2_BLEED 0

R/W SW2 Output Active Discharge Turn-on Control in the regulator disabled

0: Enable output discharge bleeding resistor

1: Disable Output discharge bleeding resistor

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

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

Table 44. MODECFG_0_0 register bit description

PCA9420

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Product data sheet

Rev. 4.2 — 26 July 2023

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