IMXRT1010CEC datasheet(22/65 Pages) NXP

22 / 65 page

i.MX RT1010 Crossover Processors Data Sheet for Consumer Products, Rev. 0, 09/2019

NXP Semiconductors

Electrical characteristics

NOTE

The POR_B input (if used) must be immediately asserted at power-up and

remain asserted until after the last power rail reaches its working voltage. In

the absence of an external reset feeding the POR_B input, the internal POR

module takes control. It is recommended to reset IC. See the i.MX RT1010

Reference Manual (IMXRT1010RM) for further details and to ensure that

all necessary requirements are being met.

NOTE

Need to ensure that there is no back voltage (leakage) from any supply on

the board towards the 3.3 V supply (for example, from the external

components that use the 3.3 V supply).

NOTE

USB_OTG1_VBUS and VDDA_ADC_3P3 are not part of the power

supply sequence and may be powered at any time.

4.2.1.2

Power-down sequence

The following restrictions must be followed:

•

VDD_SNVS_IN supply must be turned off after any other power supply or be connected (shorted)

with VDD_HIGH_IN supply.

•

If a coin cell is used to power VDD_SNVS_IN, then ensure that it is removed after any other supply

is switched off.

4.2.1.3

Power supplies usage

All I/O pins should not be externally driven while the I/O power supply for the pin (NVCC_xxx) is OFF.

This can cause internal latch-up and malfunctions due to reverse current flows. For information about I/O

power supply of each pin, see “Power Rail” columns in pin list tables of Section 6, "Package information

and contact assignments".”

4.2.2

Integrated LDO voltage regulator parameters

Various internal supplies can be powered ON from internal LDO voltage regulators. All the supply pins

named *_CAP must be connected to external capacitors. The onboard LDOs are intended for internal use

only and should not be used to power any external circuitry. See the i.MX RT1010 Reference Manual

(IMXRT1010RM) for details on the power tree scheme.

NOTE

The *_CAP signals should not be powered externally. These signals are

intended for internal LDO operation only.

IMXRT1010CEC Datasheet(PDF) 22 Page - NXP Semiconductors