NXP Semiconductors
UM10946
LPCXpresso board for LPC4367/43S67/18S37 family of MCUs
UM10946
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© NXP B.V. 2015. All rights reserved.
User manual
Rev. 1.0
— 18 November 2015
6 of 19
Designator
Description
Reference section
connected to the Target MCU SPI0 and I2C0 via this
connector.
J4
Target MCU Power / USB Device/Host connector.
Connect this micro USB A/B-type connector to a +5V
power source when it is desired to power only the Target
MCU, and leave the on-board Link2 debug probe
unpowered. This is useful when an external debug probe
is used to debug the Target MCU.
If this target USB port is being used in a USB Host
configuration (i.e. powering a USB device plugged into
the board), install JP4.
CAUTION: Do not install JP4 when applying external
power to J4.
5
J5
Link2 micro USB B-type connector. Powers both the
Link2 side of the board and Target MCU side of the
board. Power the board from this connector when using
the on-board debug probe to debug the Target MCU.
5
JP1
SWD VREF power selection
– 3 position jumper pins.
Jumper 1
– 2 (default) when on-board Target MCU is
connected to either the on-board Link2 debug probe or
an external debug probe.
Jumper 2
– 3 when on-board Link2 debug probe is used
to debug an off-board Target MCU.
5
JP2
Target MCU SWD disable
– 2-position jumper pins.
Jumper open (default) the Target MCU SWD interface
enabled. Normal operating mode where the Target SWD
is connected to either the on-board Link2 debug probe or
an external debug probe.
Jumper shunted, the Target MCU SWD interface is
disabled and the Target MCU is held in the reset state.
Use this setting only when the on-board Link2 debug
probe is used to debug an off-board Target MCU.
6
JP3, JP5
These jumpers are used to ISP boot select between
booting the Target MCU from the USART, USB or SPI
flash when the ISP button is pressed as the board is
released from Reset. See Section 8.2 for more
information
8.2
JP4
Provides 4.7V power to the Target MCU USB A/B
connector. Install JP4 only when the Target MCU is being
used as a Host USB controller.
CAUTION: Do not install JP4 when the Target MCU is
used as a USB Device or anytime external power is
applied at J4.
n/a
JP6
Link2 force DFU boot
– 2 position jumper pins.
Jumper open (default) for Link2 to follow the normal boot
sequence. The Link2 will boot from internal flash if image
is found there. With the internal flash erased the Link2
normal boot sequence will fall through to DFU boot.
n/a