S32K310 datasheet(68/137 Pages) NXP

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6.13 Cyclic wake-up current

The cyclic wake-up current is the calculated average current consumption during the periodic switching between RUN mode and

STANDBY mode. This average current can be calculated with the following formula:

ICYCL = RUN Current According to Ratio + STANDBY Current According to Ratio

Where the Current According to Ratio value is calculated as follows:

Current According to Ratio = Supply Current × Ratio of Duration

As an example, the following data was obtained with an application that periodically (every 40ms) alternates between RUN mode,

for approximately 200μs to scan several GPIO inputs (51 GPIOS), and spends the rest of the time in STANDBY mode.

Chip

Device

Operating Mode

Supply Current1

[μA]

Duration 2 [ms]

Ratio of

Duration 3

Current

According to

Ratio 4 [μA]

ICYCL -

Average current

5 [μA]

S32K314

RUN

20000

0.2

0.005

100

159.7

STANDBY

39.8

0.995

59.7

1. The supply current is obtained through the measurements of the current during the corresponding operating mode.

2. The duration is defined by the application (how much time will the device spend in the according operating mode).

3. The ratio of duration is obtained by dividing the duration of the corresponding operating mode by the total duration of the

application.

4. The current according to ratio is obtained by multiplying the supply current and the ratio of duration related to the proper

operating mode.

5. The average current is calculated by the addition of each device operating mode’s current according to ratio.

7 I/O parameters

7.1 GPIO DC electrical specifications, 3.3V Range (2.97V - 3.63V)

The leakage current on the GPIO pins is specified as a function of the pad type (Standard, Standard Plus, Medium, Fast, or GPI)

and the number of Analog functions (CMP and ADC channels) multiplexed per pin.

For S32K388, see the ILKG column in the Pinout section of the IOMUX file attached to the Reference Manual.

For other devices, the "Analog Function Count" is defined from the number of CMP and ADC channels multiplexed to a given

pin. This information can be obtained from the "Direct Signals" column in the IOMUX files attached to the Reference Manual. The

"Analog Function Count" is shown in the Condition column of the following table.

Table 21. GPIO DC electrical specifications, 3.3V Range (2.97V - 3.63V)

Symbol

Description

Min

Typ

Max

Unit

Condition

Spec

Number

VIH

Input high level DC

voltage threshold

0.70 x

VDD_HV

_A/B

—

VDD_HV

_A/B +

0.3

VDD_HV_A/B = 3.3V

—

VIL

Input low level DC

voltage threshold

VSS - 0.3 —

0.30 x

VDD_HV

_A/B

VDD_HV_A/B = 3.3V

—

WFRST

RESET Input

Filtered pulse width 1

—

Table continues on the next page...

NXP Semiconductors

I/O parameters

S32K3xx Data Sheet, Rev. 5.2, 10/2022

Data Sheet: Technical Data

Preliminary Information

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