NXP Semiconductors
LPCXpresso55S36UM
LPCXpresso55S36 Development Board User Manual
MCU-Link mode
Part
identifier
LED name /
color
Normal mode (with CMSIS-DAP
firmware)
Normal mode (with J-
Link firmware)
Firmware Update (ISP)
mode
D16
Status / red
Indicates heartbeat (fades in/out
repeatedly), with SWD activity
overlaid.
The LED blinks rapidly at startup,
if an error occurs.
Remains OFF
Lights up when MCU-Link
target (LPC55S69) boots
in ISP mode
D17
VCOM / green Indicates if VCOM port is
transmitting/receiving data
Lights up when MCU-
Link boots, and then
blinks when debug activity
happens
Remains OFF
D18
FUNC / green
Reserved for future use
Remains OFF
Remains OFF
D19
SIO / green
Indicates if USBSIO bridge traffic
is present
Remains OFF
Remains OFF
D20
NRG / green
Indicates if energy measurement
communication is happening
between the target MCU and
MCU-Link
Remains OFF
Remains OFF
Table 29. MCU-Link LEDs
...continued
4 Revision history
The table below summarizes the revisions to this document.
Revision
Date
Topic cross-reference
Change description
Added new board pictures
Updated details related to jumpers JP74 and
JP75 in
Added a link to the "Measuring target MCU
power consumption" section at the end of this
section and removed its subsection "Current
measurement"
Updated the section and added five subsections
Rev. 2
5 September 2022
Updated the section
•
Removed jumper JP30 details
•
Changed default settings of jumpers JP41,
JP42, JP43, JP44, JP45, JP46, JP50, JP51,
JP52, JP53, JP63, JP64, JP65, JP66, JP67,
JP68, and JP69
•
Added new jumpers JP72, JP73, JP74, JP75,
JP76, JP77, JP78, JP79, and JP80
In
, changed power supply for onboard
DMIC and external DMIC connector from
VCC_1V9 to VCC_3V3_1V9
Current measurement
Added as a new section
Updated
Added a new paragraph at the end of the section
Rev. 1
24 January 2022
•
•
Removed the "Example click boards" table
Revision history
LPCXpresso55S36UM
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User manual
Rev. 2 — 5 September 2022
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