NXP Semiconductors LPCXpresso804, User Manual

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UM11083 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2018. All rights reserved.
User Manual Rev. 1.1 — 24 September 2018 5 of 16
NXP Semiconductors
LPCXpresso804
User Manual
JP5 Install an ammeter across JP5 to measure current supplied to the LPC804
device. JP5 should be installed at all other times.
[6]
JP6 This jumper is not installed by default. It is provided for future support of
dual rail versions of the LPC804. See schematic.
JP7 ADC positive voltage reference (VREF). Selects between 3.3V and 1.8V
for selection of the ADC voltage reference (default is 3.3V)
See schematic.
JP8 LPC804 VDD selection. Used to select between 3.3V and 1.8V supplies
(default 3.3V) See schematic.
JP21, JP22 and JP5 These jumpers are provided to allow the user LEDs to be disconnected
from their respective LPC804 pins, enabling low power measurements
and for those signals to be used for other purposes. JP21, JP22 and JP25
enabled/disable PIO11, PIO_12 and PIO0_13 respectively. See schematic.
CN2 USB connection for power and debug probe connection to host computer.
[3][4]
CN3, CN4, CN5, CN8 Arduino connectors.
[5.1]
CN6, CN7 Expansion / device pin access connectors.
[5]
CN9 Grove I
2
C connector.
[5.2]
VR1 (Pot) Potentiometer to provide an analog signal to the LPC804 ADC. See schematic.
Table 1. Jumpers and connectors (LPCXpresso804 board)
Circuit reference Description Reference section