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NXP Semiconductors
S32K3X4EVB-Q257 | S32K3X4EVBQ257ND
HWUM
Hardware User Manual
S32K3X4EVB-Q257 HWUM
All Information provided in this document is subject to legal disclaimers
© NXP B.V. 2020. All rights reserved
NXP Semiconductors
REV B
– 9/2021
Page
17
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36
5-6
The NPN external Ballast transistor is selected to supply
the V15_MCU domain.
Default
closed
OPEN
The V15_MCU domain is disconnected and isolated
from the local external supplies.
8 Programming and Debug Interface
8.1 RESET Switch and LED indicator
The RESET switch [SW2] provides for manual application of the RESET input signal. The S32K3 MCU will drive the RESET signal to
reset the EVB board peripherals. The RESET LED indicator [D22] will be ON for the duration of the RESET signal. This operation indicates
the S32K344 MCU is in the Reset state.
Figure 12. S32K3X4EVB-Q257 | S32K3X4EVBQ257ND
– RESET Switch
8.2 On-board S32K3 Debugger
The S32K3X4EVB-Q257 [only] incorporates an On-Board Debugger embedded well as JTAG connectors. It bridges serial and debug
communications between a USB host and an embedded target processor.