S32K311NHT0MPAST datasheet(60/143 Pages) NXP

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Table 22. RUN mode configuration options (continued)

eMIOS

All

OFF

All

OFF

All

OFF

All

OFF

All

OFF

All

OFF

SAR_A

DC9

All

OFF

All

OFF

All

OFF

All

OFF

All

OFF

All

OFF

LPCM

P10

All

OFF

All

OFF

All

OFF

All

OFF

All

OFF

All

OFF

All

OFF

All

OFF

1. See clocking use case examples in the Clocking chapter of the S32K3xx Reference Manual.

2. HSE_B: After start-up, the HSE core is in WFI.

• FlexCAN0: Transmitting an 8-byte CAN-FD data frame at 5 Mbps, every 10 ms.

• FlexCAN1: Transmitting a 64-byte CAN-FD data frame at 2 Mbps, every 20 ms.

• FlexCAN2-5: Transmitting an 8-byte CAN data frame at 500 Kbps, every 20 ms.

4. LPUART0-15: Transmitting at 19200 bps, every 100ms.

• LPSPI0: Transmitting 32 bits at 20 Mbps (GPIO Fast pads), every 5 ms.

• LPSPI1-5: Transmitting 32 bits at 1 Mbps, every 5 ms.

6. LPI2C0-1: Transmitting 3 bytes at 400 Kbps, every 100ms.

7. EMAC: ON for MII interface.

• eMIOS0: 6 channels in PWM mode @ 20 KHz.

• eMIOS1-2: 8 channels in PWM mode @ 400 Hz.

• SAR_ADC0: 16 channels at 400 Hz rate, BCTU triggered.

• SAR_ADC1-2: 4 channels at 20 KHz rate, BCTU triggered.

10. LPCMP0: 8 channels enabled; LPCMP1-2: 4 channels enabled.

6.9 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.

Table 23. Cyclic wake-up current example

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.

NXP Semiconductors

Power management

S32K3xx Data Sheet, Rev. 9.1, 03/2024

Data Sheet: Technical Data

Preliminary Information for S32K388

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