IMX8QXPIEC datasheet(35/132 Pages) NXP

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Electrical characteristics

i.MX 8QuadXPlus and 8DualXPlus Industrial Applications Processors, Rev. 0, 05/2020

NXP Semiconductors

Table 28. Tri-voltage 1.8 V GPIO DC parameters1

1 For tri-voltage I/O, the associated IOMUXD compensation control register PSW_OVR and COMP bits must be set correctly.

For 1.8 or 3.3 V operation, the SCFW API must be used to set PSW_OVR = 0b0 and COMP=0b000. For 2.5 V operation,

PSW_OVR = 0b1 and COMP = 0b010.

Parameter

Symbol

Test Conditions

Min

Max

Units

High-level output voltage2,3

2 Overshoot and undershoot conditions (transitions above OVDD and below GND) on switching pads must be held below 0.3 V,

and the duration of the overshoot/undershoot must not exceed 10% of the system clock cycle. Overshoot/ undershoot must

be controlled through printed circuit board layout, transmission line impedance matching, signal line termination, or other

methods. Noncompliance to this specification may affect device reliability or cause permanent damage to the device. (OVDD

is the I/O Supply)

3 DSE is the setting of the PDRV register. High Drive mode is recommended for 3v3 and 2v5 modes. Low Drive mode is

recommended for 1v8 mode.

VOH

IOH= -0.1mA

DSE=1

0.8

× OVDD

—

IOH= -2mA

DSE=0

Low-level output voltage2,3

VOL

IOL= -0.1mA

DSE=1

—

0.125

× OVDD

IOL= -2mA

DSE=0

High-Level input voltage2,4

4 To maintain a valid level, the transition edge of the input must sustain a constant slew rate (monotonic) from the current DC

level through to the target DC level, VIL or VIH. Monotonic input transition time is from 0.1 ns to 1 ns.

VIH

—0.625

× OVDD

OVDD

Low-Level input voltage

VIL

—

0.25

× OVDD

Pull-up resistance

RPU

VIN=0V (Pullup Resistor)

PUN = "L", PDN = "H"

Pull-down resistance

RDOWN

VIN=OVDD( Pulldown Resistor)

PUN = "H", PDN = "L"

Input current (no PU/PD)

IIN

VI = 0, VI = OVDD

PUN = "H", PDN = "H"

-1

μA

Table 29. Tri-voltage 2.5 V GPIO DC parameters1

Parameter

Symbol

Test Conditions

Min

Max

Units

High-level output voltage2,3

IOH= -2mA

DSE=0

0.8

× OVDD

—

Low-level output voltage2,3

IOL= -2mA

DSE=0

—0.125

× OVDD

High-Level input voltage2,4

—0.625

× OVDD

OVDD

Low-Level input voltage

VIL

—

0.25

× OVDD

Pull-up resistance

RPU

VIN=0V (Pullup Resistor)

PUN = "L", PDN = "H"

100

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