Features
- Programming:
- External programming through UPDI
1-wire (1W) interface
- Enable programming by 12V or
fuse
- Uses the
RESET
pin of the device
for programming
- No GPIO pins occupied during
operation
- Asynchronous Half-Duplex
UART protocol towards the programmer
- Debugging:
- Memory mapped access to device
address space (NVM, RAM, I/O)
- No limitation on device clock
frequency
- Unlimited number of user program
breakpoints
- Two hardware breakpoints
- Run-time readout of CPU Program
Counter (PC), Stack Pointer (SP), and Status register (SREG) for code
profiling
- Program flow control
- Go, Stop, Reset, Step
Into
- Non-intrusive run-time chip
monitoring without accessing system registers
- Monitor CRC status and sleep
status
- Unified Programming and Debug Interface
(UPDI):
- Built-in error detection with
error signature readout
- Frequency measurement of internal
oscillators using the Event System