IMX7DCEC datasheet(47/161 Pages) NXP

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Electrical characteristics

i.MX 7Dual Family of Applications Processors Datasheet, Rev. 7, 09/2023

NXP Semiconductors

4.6

I/O AC parameters

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

• General Purpose I/O (GPIO)

• Double Data Rate I/O (DDR) for LPDDR2, LPDDR3 and DDR3/DDR3L modes

• Differential I/O (CCM_CLK1)

The GPIO and DDR I/O load circuit and output transition time waveforms are shown in Figure 6 and

Figure 7.

Figure 6. Load circuit for output

Figure 7. Output transition time waveform

4.6.1

General purpose I/O AC parameters

This section presents the I/O AC parameters for GPIO in different modes. Note that the fast or slow I/O

behavior is determined by the appropriate control bits in the IOMUXC control registers.

Icc-ovdd-lp Tri-state I/O supply current in

low-power mode

ipp_pwr_stable_b_1p8 =1

(means 1.8 V)

vddi is OFF

irefin disabled (0 uA)

0.35

Icc-vddi

Tri-state core supply current ipp_ibe=ipp_obe=0

irefin disabled (0 uA)

0.8

Icc

Power supply current (ovdd) Rload=100  between padp

and padn

4.7

mA This is not including

current through

external

Rload=100 

1 VOH_max = Vos_max + Vod_max/2 = 1.1+0.225 = 1.325 V. VOH_min = Vos_min + Vod_min/2 = 0.9+0.125 = 1.025 V.

2 VOL_max = Vos_max - Vod_min/2 = 1.1-0.125 = 0.975 V. VOL_min = Vos_min - Vod_max/2 = 0.9 - 0.225 = 0.675 V

Table 34. Differential clock I/O DC electrical characteristics(continued)

Symbol

Parameter

Test conditions

Min

Typ Max Unit

Notes

Test Point

From Output

Under Test

CL includes package, probe and fixture capacitance

0 V

OVDD

20%

80%

20%

Output (at pad)

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