General Operating Ratings

The device must operate within the ratings listed in this section in order for all other electrical characteristics and typical characteristics of the device to be valid.

Table 1. General Operating Conditions
Symbol	Description	Condition	Min.	Max.	Unit
V_DD	Operating Supply Voltage		1.8⁽²⁾	5.5	V
T	Operating temperature range⁽¹⁾	Standard temperature range	-40	105	°C
T	Operating temperature range⁽¹⁾	Extended temperature range⁽³⁾	-40	125	°C

Note:

Please refer to the device ordering code for the device temperature range.
Operation guaranteed down to 1.8V or VBOD with BODLEVEL=1.8V, whichever is lower.
Extended temperature range is only guaranteed down to 2.7V.

Table 2. Operating Voltage and Frequency
Symbol	Description	Condition	Max.	Unit
CLK_CPU	Operating system clock frequency	V_DD=[1.8, 5.5]V T=[-40, 105]°C⁽¹⁾	5	MHz
		V_DD=[2.7, 5.5]V T=[-40, 105]°C⁽²⁾	10
		V_DD=[4.5, 5.5]V T=[-40, 105]°C⁽³⁾	20
		V_DD=[2.7, 5.5]V T=[-40, 125]°C⁽²⁾	8
		V_DD=[4.5, 5.5]V T=[-40, 125]°C⁽³⁾	16

Note:

Operation guaranteed down to BOD triggering level, V_BOD with BODLEVEL0=1.8V.
Operation guaranteed down to BOD triggering level, V_BOD with BODLEVEL2=2.6V.
Operation guaranteed down to BOD triggering level, V_BOD with BODLEVEL7=4.3V.

The maximum CPU clock frequency depends on V_DD. As shown in the following figure, the Maximum Frequency vs. V_DD is linear between 1.8V < V_DD < 2.7V and 2.7V < V_DD< 4.5V

Figure 1. Maximum Frequency vs. V_DD for [-40, 105]°C