Datasheet

UM11083 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2018. All rights reserved.
User Manual Rev. 1.0 — 9 February 2018 14 of 16
NXP Semiconductors
LPCXpresso804
User Manual
The five user LEDs are active low (on when control signal is at logic 0). The signal
assignments are shown in Table 10. Note that PI00_8 and PIO0_9 are also connected to
the SPI flash data inputs/outputs, so it is advisable to remove JP3 on the LPCXpresso804
board (to disable the SPI flash memory) before installing this shield board.
The LPC804 Code Bundle, available under the Software and Tools tab of the OM40001
board web page (http://www.nxp.com/demoboard/OM40001), includes driver and
example code to show how to use the capacitive touch feature of the board.
Common PIO0_7 CAPT_YL LM75 / JP23
Common PIO0_16 ACMP_I4 (not used by default) (not used)
Common PIO0_17 CAPT_YH
Table 10. Capacitive touch LED signals
LED LPC804 I/O
D1 PIO0_20
D2 PIO0_18
D3 PIO0_15
D4 PIO0_8
D5 PIO0_9
Table 9. Capacitive touch button signals
Button LPC804 I/O Capacitive touch signal Shared with / remove jumper