STR751FR1 STMicroelectronics, STR751FR1 Datasheet - Page 80

• Manufacturer Part Number: STR751FR1
• Description: 32-bit MCU
• Manufacturer: STMicroelectronics

Specifications of STR751FR1

• Smart Low Power Modes: SLOW, WFI, STOP and STANDBY with backup registers
• Conversion Time: min. 3.75 μs

Package characteristics
7.2.2
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Selecting the product temperature range
When ordering the microcontroller, the temperature range is specified in the order code
Table 49: Order codes on page
The following example shows how to calculate the temperature range needed for a given
application.
Assuming the following application conditions:
Using the values obtained in
Figure 50. LQFP100 P
Maximum ambient temperature T
I
with I
This gives: P
Thus: P
–
–
DDmax
For LQFP100, 46°C/W
This is within the range of the suffix 6 version parts (-40 < T
In this case, parts must be ordered at least with the temperature range suffix 6
(see
For BGA64, 58°C/W
This is within the range of the suffix 7 version parts (-40 < T
In this case, parts must be ordered at least with the temperature range suffix 7
(see
OL
=8 mA, V
Dmax
= 8 mA, V
T
Table 49: Order codes on page
T
Table 49: Order codes on page
Jmax
Jmax
INTmax
= 464 mW
DD
= 82° C + (46° C/W x 464 mW) = 82°C + 21°C = 103° C
= 82° C + (58° C/W x 464 mW) = 82°C + 27°C = 109° C
700
600
500
400
300
200
100
OL
0
= 5 V, maximum 20 I/Os used at the same time in output at low level
= 400 mW and P
Dmax
= 0.4 V
Table 48
P
vs T
IOmax
81.
P
INTmax
A
P
Dmax
= 20 x 8 mA x 0.4V = 64 mW
Amax
T
T
Jmax
A
STR750Fxx STR751Fxx STR752Fxx STR755Fxx
= 8 mA x 5 V= 400 mW
IOmax
= 400 mW + 64 mW
(° C)
= 82 °C (measured according to JESD51-2),
is calculated as follows:
81).
81).
64 mW:
Suffix 6
Suffix 7
J
J
< 105° C).
< 125° C).