S32K311NHT0MPAST datasheet(70/143 Pages) NXP

70 / 143 page

Table 26. 5.0V (4.5V - 5.5V) GPIO Output AC Specification (continued)

Symbol

Description

Min

Typ

Max

Unit

Condition

Spec

Number

TR_TF_50_F

5.0V Fast GPIO rise/

fall time 1,2,3,4

1.3

—

6.1

DSE=1, SRE=1 CL

(max) = 50pF

—

1. I/O timing specifications are valid for the un-terminated 50ohm transmission line reference load given in the figure below.

A lumped 8pF load (typical) is assumed at the end of a 5 inch microstrip trace on standard FR4 with approximately 3.3pF/

inch. For best signal integrity, the series resistance in the transmission line should be matched closely to the selected

output resistance (ROUT_*) of the I/O pad.

2. GPIO output transition time information can be obtained from the device IBIS model. IBIS models are recommended for

system level simulations, as discrete values for I/O transition times are not representative of the I/O pad behavior when

connected to an actual transmission line load.

3. GPIO rise/fall time specifications are derived from simulation model for the defined operating points (between 20% and

80% of VDD_HV_A/B level). Actual application rise/fall time should be extracted from IBIS model simulations with the

microcontroller models and application PCB.

4. Output timing valid for maximum external load C L = 50pF (includes PCB trace, package trace, and external device input

load).

RDSON

RPCB = RDSON

PCB

External

device

MCUsee note 1

RDSON

5 in.

(4 layer FR4)

CPCB = ~1.5 pF/inch * 5 inch = ~7.5 pF

CL = 8 pF

1. See IBIS models for further details.

Notes:

Figure 32. Reference Load Diagram

7.4 3.3V (2.97V - 3.63V) GPIO Output AC Specification

Table 27. 3.3V (2.97V - 3.63V) GPIO Output AC Specification

Symbol

Description

Min

Typ

Max

Unit

Condition

Spec

Number

TR_TF_33_S

3.3V Standard GPIO

rise/fall time 1,2,3

—

CL (max) = 25pF

—

TR_TF_33_S

3.3V Standard GPIO

rise/fall time 1,2,3

9.5

—

CL (max) = 25pF

—

TR_TF_33_SP

3.3V Standard

Plus GPIO rise/fall

time 1,2,3

—

17.5

DSE=0 CL (max) =

25pF

—

TR_TF_33_SP

3.3V Standard

Plus GPIO rise/fall

time 1,2,3

1.9

—

DSE=1 CL (max) =

25pF

—

Table continues on the next page...

NXP Semiconductors

I/O parameters

S32K3xx Data Sheet, Rev. 9.1, 03/2024

Data Sheet: Technical Data

Preliminary Information for S32K388

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