NXP Semiconductors
UM10855
LPCXpresso board for LPC54100 family of MCUs
UM10855_OM1377.docm
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© NXP B.V. 2014. All rights reserved.
User manual
Rev. 1.0
— 4th November 2014
15 of 19
to utilize all of the available connections (additional pin locations are provided for
compatibility with future LPCXpresso boards.)
Table 4 Expansion Connectors
Reference
J1
The odd number pins are compatible with Arduino Uno rev3 Digital 15:8,
AREF, SDA & SCL connector. The even numbered pins are used for
external access and expansion of LPC54102 signals not used by the
Arduino Uno rev3 compatible interface.
J2
The odd numbered pins 1
– 13 are compatible with Arduino Uno rev3 Digital
7:0 connector. The even numbered pins, and odd numbered pins 17 and
19, are used for external access and expansion of LPC54102 signals not
used by the Arduino Uno rev3 compatible interface.
J3
PMod™ connector. Connected to the LPC54102 Target MCU SPI0 and
I2C2.
J7
The even numbered pins 6
– 20 are compatible with Arduino Uno rev3
Power connector. The odd numbered pins, and even numbered pins 2 and
4 are used.
J8
The even numbered pins 2
– 12 are compatible with Arduino Uno rev3
Analog connector. The odd numbered pins are used for external access
and expansion of LPC54102 signals not used by the Arduino Uno rev3
compatible interface.
9. Buttons
The LPCXpresso54102 board has 3 push buttons available to control the operation of the
LPC54102 (target) MCU. Their functions are as described below.
9.1 Reset
This button is used to reset the LPC54102.
9.2 ISP
This button connects to the LPC54102 P0_31 pin and may be used to force the
LPC54102 into ISP boot mode. This can be useful when the LPC54102 flash has been
programmed with code that disables the SWD debug pins or changes timing settings
such that the debug probe has problems communicating with it. To force ISP boot, hold
the ISP button down while pressing and releasing the reset button.
The ISP button can also be used to trigger an interrupt by configuring the P0_31 pin and
associated interrupt controls within your application code.
9.3 WAKEUP
Depressing this button triggers a wake interrupt by pulling down the WAKEUP input
(P0_24) of the LPC54102.