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UM11673

All information provided in this document is subject to legal disclaimers.

© NXP B.V. 2021. All rights reserved.

User manual

Rev. 1.0 — 13 September 2021 

10 of 15

 

NXP Semiconductors

UM11673

MCU-Link Pro

not necessary to disconnect / reconnect the MCU-Link Pro. It is recommend to power the 
MCU-Link Pro first when not using the MCU-Link Pro to power the target as the MCU-Link 
could be back-powered through the current measurement circuit.

The power measurement feature is intended for low power measurements, with a target 
MCU running at up to 3.6V. The design uses the LPC55S69 16-bit ADC, with power data 
sampled at up to 100kS/s. At high sample rates MCUXpresso IDE may not be able to 
capture all data, so the sample rate may need to be adjusted using the configuration 
options in the Energy Measurement configuration settings in that tool.

4.4.1 Measurement range configuration

As mentioned above, MCU-Link Pro has two maximum current range measurement 
configurations, with the lower range providing better resolution at very low currents. If the 
target current exceeds the maximum current for the selected range then the measurement 
will clip and hence be inaccurate, but the target operation may continue as normal 
(provided the current is not high enough to cause a significant drop across the high 
current sense resistor and hence cause a brown out and/or trigger glitch security 
protection on some devices). Note that the MCU-Link Pro on-board regulator for the target 
is limited to a maximum of 350mA output.

Range configuration settings with corresponding accuracy and resolution are shown 
below. Note that all settings for J16/J17/J18 must be consistent for correct operation. 
Accuracy may vary with temperature and is provided for reference purposes only.

 

4.5  SPI and I2C bridging (USB to Target SPI and/or I2C bridge, USBSIO)

MCU-Link Pro includes a capability to bridge SPI and/or I2C ports to a host computer via 
USB, called USBSIO. This port bridging function can be used for emulating a system host, 
peripherals (in the case of I2C) and/or for device programming via the ISP feature. NXP’s 
MCUXpresso SEC tool has an option to program a target system via this bridge (see SEC 
tool documentation for details). USBSIO activity is indicated by the USBSIO status LED, 
which will illuminate/flicker when traffic is present on this interface. This feature is 
supported by a free host library from NXP called LIBUSBSIO; for more details on this 
library please visit 

https://www.nxp.com/libusbsio

.

The SPI interface connections are routed via level shifters/buffers with the target side IO 
voltage determined by the voltage connected to the VDD_IO_REF signal at pin 14 of J19. 
The I2C interface connections are routed to an open drain buffer on the MCU-Link Pro.

USBSIO may be disabled by inserting jumper J15 before powering the MCU-Link Pro; this 
will instruct the firmware not to enumerate the USB end point for USBSIO (which is called 
“MCU-Link LPCSIO” for backward compatibility reasons). Note that installing/removing 
this jumper after powering the board will have no effect on the feature in terms of how the 

Table 3.

Energy measurement range configuration (as at firmware revision 2.243)

Maximum measureable 
current

J16 
setting

J17 
setting

J18 
setting

Measurement 
ranges

Resolution Accuracy 

(typical)

50mA

2-3

2-3

2-3

200nA to 400uA
>400uA to 50mA

200nA
5uA

1%
1%

350mA

1-2

1-2

1-2

10uA to 1.5mA
>1.5mA to 350mA

1uA 
20uA 

1%
5%

Summary of Contents for MCU-Link Pro

Page 1: ...MCU Link ProUM11673 UM11673 MCU Link Pro Rev 1 0 September 13 2021 User manual Document information Info Content Keywords MCU Link Pro MCU Link MCU LINK PRO Abstract MCU Link Pro user manual...

Page 2: ...reserved User manual Rev 1 0 13 September 2021 2 of 15 Contact information For more information please visit http www nxp com For sales office addresses please send an email to salesaddresses nxp com...

Page 3: ...ions based on the MCU Link architecture which includes a very low cost base model and implementations built into NXP evaluation boards MCU Link solutions are based on the powerful low power LPC55S69 m...

Page 4: ...o legal disclaimers NXP B V 2021 All rights reserved User manual Rev 1 0 13 September 2021 4 of 15 NXP Semiconductors UM11673 MCU Link Pro On board user programmable LPC804 for peripheral emulation Mu...

Page 5: ...ps as can be found on that page Table 1 Indicators jumpers buttons and connectors Circuit ref Description Default Ref LED1 7 Status LEDs n a 4 7 J1 Host USB connector n a 2 J2 Multi probe sync reserve...

Page 6: ...USB ISP mode To do this insert jumper J4 then connect MCU Link Pro to your host computer using a micro B USB cable connected to J1 The red STATUS LED LED3 should light and stay on for further informat...

Page 7: ...MCU Link probe either with CMSIS DAP or J Link firmware and will show the probe types and unique identifiers of all probes it finds in the probe discovery dialog when starting a debug session This di...

Page 8: ...inate flicker when SWO data is being sent received on this interface this can happen during profiling and during energy measurement A target reset button SW1 is provided on MCU Link Pro note that this...

Page 9: ...e Target s supply voltage and current drawn and the Energy Measurement features in MCUXpresso IDE can display this measurement data along with energy and power consumption For information on MCUXpress...

Page 10: ...that all settings for J16 J17 J18 must be consistent for correct operation Accuracy may vary with temperature and is provided for reference purposes only 4 5 SPI and I2C bridging USB to Target SPI an...

Page 11: ...ebug sessions are working as expected The table below shows the purpose function of each of these LEDs when using the CMSIS DAP firmware Note that the label for each LED can be found on the silkscreen...

Page 12: ...es access to UART I2C SPI and 3 GPIOs ports of the LPC804 This MCU has a switch matrix that allows re mapping of most of its peripherals to most available pins so the connections shown are suggested a...

Page 13: ...connectors Most users of MCU Link Pro are expected to use the standard firmware from NXP and so will not need to debug the LPC55S69 MCU Link processor however SWD connector J3 and may be used to deve...

Page 14: ...ected to result in personal injury death or severe property or environmental damage NXP Semiconductors accepts no liability for inclusion and or use of NXP Semiconductors products in such equipment or...

Page 15: ...firmware 6 3 3 Setup for use with development tools 7 3 3 1 Use with MCUXpresso IDE 7 3 3 2 Use with other IDEs 7 4 Feature descriptions 7 4 1 Target SWD SWO interface 8 4 2 Powering the target 8 4 3...

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