NXP Semiconductors KW45B41Z-EVK - Push Buttons

NXP Semiconductors
KW45B41Z-EVKUM
KW45B41Z-EVK Board User Manual
Part identifier Jumper type Description Reference section
Note: By default, MCU-Link flash is
preprogrammed with a version of CMSIS-DAP
firmware.
JP26 1x2 pin header MCU-Link debug probe target selection jumper:
• Open (default setting): The MCU-Link debug
probe or an external debug probe can be
connected to the onboard target MCU. Use
this setting when the target MCU operates in
Normal mode (its SWD (debug) interface is
enabled).
• Shorted: The MCU-Link debug probe can be
connected to an external target MCU. Use
this setting when using the MCU-Link debug
probe for debugging an external target MCU.
JP28 1x3 pin header Target power selection jumper:
• 1-2 shorted (default setting): Onboard target
MCU is used as debug target or an external
target MCU is used as debug target but it
uses board power
• 2-3 shorted: An external target MCU is used
as debug target and it uses its own power
Section 3.5
JP22 1x2 pin header MCU-Link serial wire debug (SWD) disable
jumper:
• Open (default setting): MCU-Link SWD
feature is enabled. MCU-Link drives SWD of
target MCU or external target MCU.
• Shorted: MCU-Link SWD feature is disabled.
This setting of JP22 can be used when
connecting an external debug probe for
debugging the target MCU.
For more information
on this jumper, see
KW45B41Z-EVK
schematics
Table 5. KW45B41Z-EVK jumpers...continued
1.10 Push buttons
Table 6 describes the KW45B41Z-EVK push buttons. The push buttons are shown in Figure 2.
Part identifier PCB label Button name Description
SW1 RST_SW Reset button Pressing SW1 resets the target MCU (KW45B41
Z) which causes board peripherals to reset to their
default states and executes the boot code. When
SW1 is pressed, the reset LED D7 turns ON if jumper
JP18 is shorted. If the target MCU is in Deep Power-
Down mode, then it comes out of this mode.
SW2 PTD1_NMI PB Non-Maskable Interrupt
(NMI) button
SW3 PTC6_WUU0 PB Wake-Up Unit (WUU)
button
Interrupt push buttons
SW4 BOOT CONFIG Boot Configuration button Helps the target MCU boot code to determine if the
MCU should enter into In-System Programming (ISP)
mode. The main purpose of this button is to force the
target MCU into ISP mode at boot time; to do this,
Table 6. KW45B41Z-EVK push buttons
KW45B41Z-EVKUM All information provided in this document is subject to legal disclaimers. © 2023 NXP B.V. All rights reserved.
User manual Rev. 2 — 13 February 2023
16 / 50