MPF0900AMBA2ES datasheet(156/205 Pages) NXP

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NXP Semiconductors

PF09

Nine-channel power management IC with advanced system safety monitoring

ERRMON_TIME

Error tmer duration

1 ms

8 ms

16 ms

32 ms

Table 201. ERRMON timer configuration bit

The ERRMON_RESET bit is provided to define whether the ERRMON fault can also generate a hard reset

event upon a fault confirmation. By default, the ERRMON_RESET is set to 0, to ensure the system does

not generate a hard reset at power up, until the MCU is able to configure the system and ready to set an OK

condition in the ERRMON input.

ERRMON_RESET

ERRMON reaction

No reset (default)

Reset on fault confirmed

Table 202. ERRMON reaction configuration bit

If the ERRMON reset event is enabled, the reset event will be generated only if the FS0B was previously

released. Otherwise, the ERRMON event will be able to notify the system of the event via the INTB pin if the

ERRMON_I interrupt is not masked in the interrupt registers.

The device monitors for external errors during the RUN and the Monitored STANDBY States, and it starts

monitoring for an external error as soon as the RSTB pin is released after the Power-up sequence.

In the low-power STANDBY state, the ERRMON block is disabled to allow minimum power consumption, and it

will start monitoring the ERRMON input as soon as it enters the RUN state.

After the FS0B is asserted by the ERRMON event, the FS0B cannot be released until the ERRMON_I flag

is cleared and no fault condition is present in the ERRMON input (assuming there are no other conditions

preventing the FS0B from releasing).

If the ERRMON input is stuck in a fault condition (stuck in a NOK level), the system will not be able to clear the

ERRMON_I interrupt until the error condition is removed.

The GPIO3_S bit can be used to sense the real-time status of the ERRMON input.

14.6.1 ERRMON dynamic characteristic

All parameters are specified at TA = -40 °C to 125 °C, unless otherwise noted. Typical values are characterized at VIN = 5 V

and TA = 25 °C unless otherwise noted.

Symbol

Description

Min

Typ

Max

Unit

tFILT_ERRM

ERRMON deglitch time

μs

tERRM1

ERRMON_TIME[1:0] = 00

0.9

1.1

tERRM2

ERRMON_TIME[1:0] = 01

7.2

8.8

tERRM3

ERRMON_TIME[1:0] = 10

14.4

17.6

tERRM4

ERRMON_TIME[1:0] = 11

28.8

35.2

Table 203. ERRMON dynamic characteristics

PF09

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

Product data sheet

Rev. 1.3 — 16 December 2025

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