NXP Semiconductors LPC CM0 Series, Руководство пользователя, Страница: 5 / 28

Figure 1. Hardware connection of LPCXpresso824MAX
In Figure 1 , an external debbugger is used. Due to this, jumper JP1 is shorted. The test voltage of 1.65 V is provided by a resistor
voltage divider from the VCC (3.3 V).
To use FreeMASTER, ensure that solderjumper SJ9 is set to position 2-3 (default is 1-2). For more information,
see the LPCXpresso824MAX schematic at
www.nxp.com .
NOTE
2.2 LPCXpresso845MAX
Debugger:
To use the on-board debugger, make sure that jumper JP1 (next to the USB connector) is open. Short this jumper to use an
external debug connector.
The default debugger in the example project is set to CMSIS-DAP.
FreeMASTER
FreeMASTER communication is used via an onboard debugger with a speed of 9600 bd.
The ADC module on LPCXpresso845MAX does not allow to connect the VrefH, VrefL, and Bandgap internally to the ADC input.
Connect these signals (for the Analog I/O test) as follows:
• VrefH - 3.3 V on PIO0_23 (conn. J6-2).
• VrefL - GND on PIO0_14 (conn. J6-1).
LPCXpresso845MAX
LPC CM0 Safety Example , Rev. 3, 07/2021
NXP Semiconductors 5