STMicroelectronics STM32F038C6 Manual page 97

STM32F038x6
Assuming the following application conditions:
Maximum ambient temperature T
I
DDmax
level with I
P
INTmax =
P
IOmax = 20
This gives: P
P
Dmax =
Thus: P
Dmax
Using the values obtained in
–
T
Jmax
This is above the range of the suffix 6 version parts (–40 < T
In this case, parts must be ordered at least with the temperature range suffix 7 (see
Section 8: Part
use suffix 6 parts.
= 20 mA, V = 3.5 V, maximum 20 I/Os used at the same time in output at low
DD
= 8 mA, V = 0.4 V
OL OL
20 mA × 3.5 V= 70 mW
× 8 mA × 0.4 V = 64 mW
= 70 mW and P
INTmax
70 64 = 134 mW
+
= 134 mW
Table 66
For LQFP48, 55 °C/W
= 100 °C + (55 °C/W × 134 mW) = 100 °C + 7.37 °C = 107.37 °C
numbering) unless we reduce the power dissipation in order to be able to
DocID026079 Rev 3
= 100 °C (measured according to JESD51-2),
Amax
= 64 mW:
IOmax
T is calculated as follows:
Jmax
Package information
< 105 °C).
J
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