NXP Semiconductors
UM10946
LPCXpresso board for LPC4367/43S67/18S37 family of MCUs
UM10946
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User manual
Rev. 1.0
— 18 November 2015
12 of 19
Table 3.
Current measurement system range selection
Jumper
Position
Supply
Current range
JP7
Shunted (default) Target
58uA-235mA
JP7
Open
Target
12.6uA-52mA
JP9
Shunted (default) I/O
8uA-32mA
JP9
Open
I/O
4uA-16mA
The ADC can sample the amplifier out at up to 200k samples/second, configurable under
control of the Link2 probe.
The current measurement system is supported by version 8.0 and later versions of the
LPCXpresso IDE, which includes controls to select sample rate and enter the sense
resistor values selected by JP7 and JP9.
6. Debug Configurations
The LPCXpresso4367 board has a built-in debug probe known as Link2, implemented in
an LPC43xx MCU. The Target MCU can be debugged by the on-board Link debugging
probe, or from an external debug probe installed at P1. On-board jumpers JP1 and JP2
must be correctly positioned for each mode. The on-board Link debug probe is capable
of debugging target MCU’s with a VDDIO range 3.3V±10%. Check the sections below for
the appropriate jumper settings and how to properly power the board.
6.1 Debugging on-board Target MCU using on-board debug probe
To use the on-board Link debug probe, the LPCXpresso4367 board must be powered
from the Link2 USB connector J5, and jumper JP2 must be fitted in position pin 1 - 2
(Local Target). Jumper JP1 must be open to enable the Target MCU. Connecting the
micro USB J5 to a host computer will power the Link and Target sections of the board
and provide the USB link to the debug tool software.
6.2 Debug on-board Target MCU using external debug probe
To use an external debug probe, connect the probe to the SWD (P1) connector, power
the Target MCU section of the board from the Target power only micro USB connector
J4, and fit a jumper to JP2 across pin 1 - 2 (Local Target)
.
Jumper JP1 must be open to
enable the Target MCU. The on-board Link debug probe must be unpowered, by leaving
J5 unconnected.
6.3 Using on-board Link2 to debug an off-board target LPC MCU
The LPCXpresso4367 board
’s Link2 debug probe may be used to debug an off-board
target MCU. The on-
board Link debug probe is capable of debugging target MCU’s with
a VDDIO range of 3.3V±10%. To keep the on-board Target MCU from interfering with
the SWD interface, JP1 must be fitted. The Link2 debug probe SWD is connected by a
ribbon cable between the P1 connector to the off-board target MCU SWD interface.
Power the LPCXpresso4367 board from the Link USB connector J5, and jumper JP2
must be fitted across pins 2 - 3 (External Target.)