Datasheet 搜索 > 微控制器 > ST Microelectronics（意法半导体） > STM32F100C4T6B 数据手册 > STM32F100C4T6B 数据手册 89/95 页
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STM32F100C4T6B 数据手册 - ST Microelectronics（意法半导体）
制造商:
ST Microelectronics（意法半导体）
分类:
微控制器
封装:
LQFP-48
描述:
STMICROELECTRONICS STM32F100C4T6B 微控制器, 32位, 线路接入, ARM 皮质-M3, 24 MHz, 16 KB, 4 KB, 48 引脚, LQFP
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符号图
焊盘图
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引脚图在P22P23P24P25P26P27P28P29Hot
典型应用电路图在P48P50P71
封装尺寸在P76
型号编码规则在P89P90P91
封装信息在P76P77P78P79P80P81P82P83P84P85P86P87
技术参数、封装参数在P33P55
电气规格在P31P32P33P34P35P36P37P38P39P40P41P42
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STM32F100C4T6B数据手册
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DocID16455 Rev 8 89/95
STM32F100x4, STM32F100x6, STM32F100x8, STM32F100xB Package characteristics
94
6.6.2 Selecting the product temperature range
When ordering the microcontroller, the temperature range is specified in the ordering
information scheme shown in Table 54: Ordering information scheme.
Each temperature range suffix corresponds to a specific guaranteed ambient temperature at
maximum dissipation and, to a specific maximum junction temperature.
As applications do not commonly use the STM32F10xxx at maximum dissipation, it is useful
to calculate the exact power consumption and junction temperature to determine which
temperature range will be best suited to the application.
The following examples show how to calculate the temperature range needed for a given
application.
Example: high-performance application
Assuming the following application conditions:
Maximum ambient temperature T
Amax
= 82 °C (measured according to JESD51-2),
I
DDmax
= 50 mA, V
DD
= 3.5 V, maximum 20 I/Os used at the same time in output at low
level with I
OL
= 8 mA, V
OL
= 0.4 V and maximum 8 I/Os used at the same time in output
mode at low level with I
OL
= 20 mA, V
OL
= 1.3 V
P
INTmax =
50 mA × 3.5 V= 175 mW
P
IOmax = 20
× 8 mA × 0.4 V + 8 × 20 mA × 1.3 V = 272 mW
This gives: P
INTmax
= 175 mW and P
IOmax
= 272 mW
P
Dmax =
175
+
272 = 447 mW
Thus: P
Dmax
= 447 mW
Using the values obtained in Table 53 T
Jmax
is calculated as follows:
– For LQFP64, 45 °C/W
T
Jmax
= 82 °C + (45 °C/W × 447 mW) = 82 °C + 20.1 °C = 102.1 °C
This is within the range of the suffix 6 version parts (–40 < T
J
< 105 °C).
In this case, parts must be ordered at least with the temperature range suffix 6 (see
Table 54: Ordering information scheme).
Example 2: High-temperature application
Using the same rules, it is possible to address applications that run at high ambient
temperatures with a low dissipation, as long as junction temperature T
J
remains within the
specified range.
Assuming the following application conditions:
Maximum ambient temperature T
Amax
= 115 °C (measured according to JESD51-2),
I
DDmax
= 20 mA, V
DD
= 3.5 V, maximum 20 I/Os used at the same time in output at low
level with I
OL
= 8 mA, V
OL
= 0.4 V
P
INTmax =
20 mA × 3.5 V= 70 mW
P
IOmax = 20
× 8 mA × 0.4 V = 64 mW
This gives: P
INTmax
= 70 mW and P
IOmax
= 64 mW:
P
Dmax =
70
+
64 = 134 mW
Thus: P
Dmax
= 134 mW
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