IMX7SCEC datasheet(25/152 Pages) NXP

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Electrical characteristics

i.MX 7Solo Family of Applications Processors Datasheet, Rev. 5, 07/2017

NXP Semiconductors

– Internal oscillator

External crystal oscillator with on-chip support circuit:

— At power up, RC oscillator is utilized. After crystal oscillator is stable, the clock circuit

switches over to the crystal oscillator automatically.

— Higher accuracy than RC oscillator

— If no external crystal is present, then the RC oscillator is utilized

The decision of choosing a clock source should be taken based on real-time clock use and precision

timeout.

4.1.5

Maximum supply currents

The Power Virus numbers shown in Table 12 represent a use case designed specifically to show the

maximum current consumption possible. All cores are running at the defined maximum frequency and are

limited to L1 cache accesses only to ensure no pipeline stalls. Although a valid condition, it would have a

very limited practical use case, if at all, and be limited to an extremely low duty cycle unless the intention

was to specifically show the worst case power consumption.

The MC3xPF3000xxxx, NXP’s power management IC targeted for the i.MX 7Solo family of processors,

supports the Power Virus mode operating at 1% duty cycle. Higher duty cycles are allowed, but a robust

thermal design is required for the increased system power dissipation.

Table 12 represents the maximum momentary current transients on power lines, and should be used for

power supply selection. Maximum currents are higher by far than the average power consumption of

typical use cases. For typical power consumption information, see the application note, i.MX 7DS Power

Consumption Measurement (AN5383).

Table 12. Maximum supply currents

Power Rail

Source

Conditions

Max Current

Unit

VDD_ARM

From PMIC

—

500

VDD_SOC

From PMIC

—

1000

VDDA_1P8_IN

From PMIC

—

1501

VDD_SNVS_IN

From PMIC or Coin cell

—

VDD_XTAL_1P8

From PMIC

—

VDD_LPSR_IN

From PMIC

—

VDD_TEMPSENSOR_1P8

From PMIC

—

VDDA_ADC1_1P8

From PMIC

—

VDDA_ADC2_1P8

From PMIC

—

FUSE_FSOURCE

From PMIC

—

150

VDD_MIPI_1P0

From i.MX 7 internal LDO

—

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