User manual

LPC4357 Developer’s Kit - User’s Guide
Page 23
Copyright 2013 © Embedded Artists AB
4.11 SP8: Analog Input
The board contains a trimming potentiometer (R94) for manually generating an adjustable voltage
(between GND and VREF). See picture below where to locate the trimming potentiometer on the
board. The table list which pin the adjustable voltage is connected to.
It is recommended to remove resistor R93 on the OEM base board in order to be able to use
signal ADC6. In order to be compatible with other OEM boards, R93 connects signal V3A and VREF,
but signal VREF is carrying signal ADC6 on the LPC4357 OEM board.
Figure 12 – Analog Input
Signals
LPC4357
GPIO39_AIN2
ADC3
Trimming Potentiometer
R94