PIMXRT406LCAF4A datasheet(32/100 Pages) NXP

32 / 100 page

i.MX RT1020 Crossover Processors for Industrial Products, Rev. 2, 03/2021

NXP Semiconductors

Electrical characteristics

4.3.2

I/O AC parameters

This section includes the AC parameters of the following I/O types:

•

General Purpose I/O (GPIO)

Figure 4 shows load circuit for output, and Figure 5 show the output transition time waveform.

Figure 4. Load circuit for output

Figure 5. Output transition time waveform

4.3.2.1

General purpose I/O AC parameters

The I/O AC parameters for GPIO in slow and fast modes are presented in the Table 23 and Table 24,

respectively. Note that the fast or slow I/O behavior is determined by the appropriate control bits in the

IOMUXC control registers.

Input current (no PU/PD)

IIN

VI = 0, VI = NVCC_XXXX

-1

A

Keeper Circuit Resistance

R_Keeper

VI =0.3 x NVCC_XXXX, VI = 0.7

x NVCC_XXXX

105

175



1 Overshoot and undershoot conditions (transitions above NVCC_XXXX and below GND) on switching pads must be held

below 0.6 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. Non-compliance to this specification may affect device reliability or cause permanent damage

to the device.

2 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 s.

3 Hysteresis of 250 mV is guaranteed over all operating conditions when hysteresis is enabled.

Table 22. Single voltage GPIO DC parameters (continued)

Parameter

Symbol

Test Conditions

Min

Max

Units

Test Point

From Output

Under Test

CL includes package, probe and fixture capacitance

OVDD

20%

80%

20%

Output (at pad)

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