36.3 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.
Symbol | Description | Condition | Min. | Max. | Unit |
---|---|---|---|---|---|
VDD | Operating supply voltage | 1.8(2) | 5.5 | V | |
T | Operating temperature range(1) | Standard temperature range | -40 | 105 | °C |
Extended temperature range(3) | -40 | 125 |
Note:
- Refer to the device ordering codes for the device temperature range.
- Operation is ensured down to 1.8V or BOD triggering level, VBOD. VBOD may be below the
minimum Operating Supply Voltage for some devices. Where this is the case, the device is
tested down to VDD = VBOD during production.
- During Chip Erase, the BOD is forced ON. If the supply voltage VDD is below the configured VBOD, the Chip Erase will fail. See Chip Erase.
- The extended temperature range is only ensured down to 2.7V.
Symbol | Description | Condition | Min. | Max. | Unit |
---|---|---|---|---|---|
CLK_CPU | Operating system clock frequency |
VDD = [1.8, 5.5]V |
0 | 5 | MHz |
VDD = [2.7, 5.5]V |
0 | 10 | |||
VDD = [4.5, 5.5]V |
0 | 20 | |||
VDD = [2.7, 5.5]V |
0 | 8 | |||
VDD = [4.5, 5.5]V |
0 | 16 |
Note:
- Operation ensured down to BOD triggering level, VBOD with BODLEVEL0.
- Operation ensured down to BOD triggering level, VBOD with BODLEVEL2.
- Operation ensured down to BOD triggering level, VBOD with BODLEVEL7.
The maximum CPU clock frequency depends on VDD. As shown in the following figure, the maximum frequency vs. VDD is linear between 1.8V < VDD < 2.7V and 2.7V < VDD < 4.5V.