3.1.2.2
Configuration Words/Fuse Bytes
Configuration Words (PIC
®
MCU Targets)
Configuration Word settings included in the project being programmed after program Flash is
programmed. The debugger will
not
mask out any bits in the Configuration Words when writing them, but
since it uses Low-Voltage Programming mode, it is unable to clear the LVP Configuration bit. If the
incorrect clock source is selected, for example, and the board does not boot, it is always possible to
perform a bulk erase (always done before programming) and restore the device to its default settings.
3.2
Curiosity Nano Standard Pinout
The twelve edge connections closest to the USB connector on Curiosity Nano kits have a standardized
pinout. The program/debug pins have different functions depending on the target programming interface
as shown in the table and figure below.
Table 3-2. Curiosity Nano Standard Pinout
Debugger Signal
ICSP Target
Description
ID
-
ID line for extensions.
CDC TX
UART RX
USB CDC TX line.
CDC RX
UART TX
USB CDC RX line.
DBG0
ICSPDAT
Debug data line.
DBG1
ICSPCLK
Debug clock line/DGI GPIO.
DBG2
GPIO0
DGI GPIO.
DBG3
MCLR
Reset line.
NC
-
No connect.
VBUS
-
VBUS voltage for external use.
VOFF
-
Voltage Off input.
VTG
-
Target voltage.
GND
-
Common ground.
Figure 3-1. Curiosity Nano Standard Pinout
USB
DEBUGGER
PS LED
NC
NC
ID
ID
CDC RX
CDCRX
CDC TX
CDCTX
DBG1
DBG1
DBG2
DBG2
VBUS
VBUS
VOFF
VOFF
DBG3
DBG3
DBG0
DBG0
GND
GND
VTG
VTG
CURIOSITY NANO
PIC18F47Q10 Curiosity Nano
Curiosity Nano
©
2019 Microchip Technology Inc.
User Guide
DS40002103A-page 8
