UPDI Timing

Figure 1. UPDI Enable Sequence with Dedicated UPDI Pin
Table 1. UPDI Timing Characteristics
Symbol Description Min. Max. Unit
tRES Duration of Handshake/Break on RESET 10 200 µs
tUPDI Duration of UPDI.txd = 0 10 200 µs
tDeb0 Duration of Debugger.txd = 0 0.2 1 µs
tDebZ Duration of Debugger.txd = z 200 14000 µs
Table 2. UPDI Max. Bit Rates vs. Temperature
Symbol Description Min. Max. Unit Condition
fUPDI UPDI baud rate 1.8 Mbps Temp. 0ºC to 50ºC
0.9 Mbps Temp. <0ºC or >50ºC