32.3 General Operating Ratings

The device must operate within the ratings listed in this section for all other electrical characteristics and typical characteristics of the device to be valid.
Table 32-2. General Operating Conditions
SymbolDescriptionConditionMin.Max.Unit
VDDOperating Supply Voltage1.8(1,2)5.5V
VAO - Auto Grade and Extended Operating temperature range2.7(2,3)5.5V
TAOperating temperature rangeExtended-40125°C
Industrial-4085
Note:
  1. Operation is guaranteed down to 1.8V or BOD triggering level VBOD when BOD is active.
  2. During Chip Erase, the BOD is forced ON. If the supply voltage VDD is below the configured VBOD, the erase attempt will fail.
  3. Operation is guaranteed down to 2.7V or BOD triggering level VBOD when BOD is active.
Table 32-3. Operating Voltage and Frequency
SymbolDescriptionConditionMin.Max.Unit
fCLK_CPUNominal operating system clock frequency

VDD = [1.8, 5.5]V
TA = [-40, 105]°C(1,4)

05MHz

VDD = [2.7, 5.5]V
TA = [-40, 105]°C(2,4)

010

VDD = [4.5, 5.5]V
TA = [-40, 105]°C(3,4)

020

VDD = [2.7, 5.5]V
TA = [-40, 125]°C(2)

08

VDD = [4.5, 5.5]V
TA = [-40, 125]°C(3)

016
Note:
  1. Operation is guaranteed down to BOD triggering level, VBOD with BODLEVEL0.
  2. Operation is guaranteed down to BOD triggering level, VBOD with BODLEVEL2.
  3. Operation is guaranteed down to BOD triggering level, VBOD with BODLEVEL7.
  4. These specifications do not apply to automotive range parts (-VAO).

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

Figure 32-1. Maximum Frequency vs. VDD for [-40, 105]°C
Figure 32-2. Maximum Frequency vs. VDD for [105, 125]°C
Figure 32-3. Maximum Frequency vs. VDD for [-40, 125]°C, Automotive Range Parts (-VAO)