•
KIT-INFO.TXT
- a text file containing details about the kit firmware, name, serial number, and
device.
•
STATUS.TXT
- a text file containing the programming status of the board.
Info:
STATUS.TXT
is dynamically updated by the on-board debugger, the contents may be
cached by the OS and therefore not reflect the correct status.
3.1.2.2
Fuse Bytes
Fuse Bytes (AVR
®
MCU Targets)
The debugger does
not
mask any fuse bits or combinations when writing fuses. It is not possible to
disable UPDI by fuse setting on devices with a dedicated UPDI pin. For devices with a shared/
configurable UPDI pin, be sure
not
to select an alternate pin function for UPDI either by fuse setting in
Programming mode or by using the I/O view or memory views to modify the memory-mapped fuse
values. Disabling UPDI will render the debugger unable to contact the target device — an external
programmer capable of 12V UPDI activation will be required.
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
UPDI Target
Description
ID
-
ID line for extensions.
CDC TX
UART RX
USB CDC TX line.
CDC RX
UART TX
USB CDC RX line.
DBG0
UPDI
Debug data line.
DBG1
GPIO1
Debug clock line/DGI GPIO.
DBG2
GPIO0
DGI GPIO.
DBG3
RESET
Reset line.
NC
-
No connect.
VBUS
-
VBUS voltage for external use.
VOFF
-
Voltage Off input.
VTG
-
Target voltage.
GND
-
Common ground.
ATtiny1607 Curiosity Nano
Curiosity Nano
©
2019 Microchip Technology Inc.
User Guide
DS50002897A-page 9
