3.2
Curiosity Nano Standard Pinout
The 12 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
TM
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
3.3
Power Supply
The kit is powered through the USB port and contains two LDO regulators, one to generate 3.3V for the on-board
debugger, and an adjustable LDO regulator for the target microcontroller PIC18F47K42 and its peripherals. The
voltage from the USB connector can vary between 4.4V to 5.25V (according to the USB specification) and will limit
the maximum voltage to the target. The figure below shows the entire power supply system on PIC18F47K42
Curiosity Nano.
PIC18F47K42 Curiosity Nano
Curiosity Nano
©
2019 Microchip Technology Inc.
User Guide
DS50002899B-page 9
