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参数资料
| 型号： | STM32F103VET7XXX |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 32-BIT, FLASH, 72 MHz, RISC MICROCONTROLLER, PQFP100 |
| 封装： | 14 X 14 MM, 0.50 MM PITCH, ROHS COMPLIANT, LQFP-100 |
| 文件页数： | 18/122页 |
| 文件大小： | 1599K |
| 代理商： | STM32F103VET7XXX |
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Package characteristics
STM32F103xC, STM32F103xD, STM32F103xE
114/122
Doc ID 14611 Rev 6
6.2.2
Selecting the product temperature range
When ordering the microcontroller, the temperature range is specified in the ordering
information scheme shown in Table 71: 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 STM32F103xC 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 1: High-performance application
Assuming the following application conditions:
Maximum ambient temperature TAmax = 82 °C (measured according to JESD51-2),
IDDmax = 50 mA, VDD = 3.5 V, maximum 20 I/Os used at the same time in output at low
level with IOL = 8 mA, VOL= 0.4 V and maximum 8 I/Os used at the same time in output
at low level with IOL = 20 mA, VOL= 1.3 V
PINTmax = 50 mA × 3.5 V= 175 mW
PIOmax = 20 × 8 mA × 0.4 V + 8 × 20 mA × 1.3 V = 272 mW
This gives: PINTmax = 175 mW and PIOmax = 272 mW:
PDmax = 175 + 272 = 447 mW
Thus: PDmax = 447 mW
–
For LQFP100, 46 °C/W
TJmax = 82 °C + (46 °C/W × 447 mW) = 82 °C + 20.6 °C = 102.6 °C
This is within the range of the suffix 6 version parts (–40 < TJ < 105 °C).
In this case, parts must be ordered at least with the temperature range suffix 6 (see
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 TJ remains within the
specified range.
Assuming the following application conditions:
Maximum ambient temperature TAmax = 115 °C (measured according to JESD51-2),
IDDmax = 20 mA, VDD = 3.5 V, maximum 20 I/Os used at the same time in output at low
level with IOL = 8 mA, VOL= 0.4 V
PINTmax = 20 mA × 3.5 V= 70 mW
PIOmax = 20 × 8 mA × 0.4 V = 64 mW
This gives: PINTmax = 70 mW and PIOmax = 64 mW:
PDmax = 70 + 64 = 134 mW
Thus: PDmax = 134 mW
相关PDF资料 |
PDF描述 |
|---|---|
| STM32F103VET7TR | 32-BIT, FLASH, 72 MHz, RISC MICROCONTROLLER, PQFP100 |
| STM32F103VEH6XXX | 32-BIT, FLASH, 72 MHz, RISC MICROCONTROLLER, PBGA100 |
| STM32F103VDH6TR | 32-BIT, FLASH, 72 MHz, RISC MICROCONTROLLER, PBGA100 |
| STM32F103RET6TR | 32-BIT, FLASH, 72 MHz, RISC MICROCONTROLLER, PQFP64 |
| STM32F103RDT6TR | 32-BIT, FLASH, 72 MHz, RISC MICROCONTROLLER, PQFP64 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| STM32F103VEY6TR | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:High-density performance line ARM-based 32-bit MCU with 256 to 512KB Flash, USB, CAN, 11 timers, 3 ADCs, 13 communication interfaces |
| STM32F103VEY6XXX | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:High-density performance line ARM-based 32-bit MCU with 256 to 512KB Flash, USB, CAN, 11 timers, 3 ADCs, 13 communication interfaces |
| STM32F103VEY7TR | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:High-density performance line ARM-based 32-bit MCU with 256 to 512KB Flash, USB, CAN, 11 timers, 3 ADCs, 13 communication interfaces |
| STM32F103VEY7XXX | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:High-density performance line ARM-based 32-bit MCU with 256 to 512KB Flash, USB, CAN, 11 timers, 3 ADCs, 13 communication interfaces |
| STM32F103VF | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:XL-density performance line ARM-based 32-bit MCU with 768 KB to 1 MB Flash, USB, CAN, 17 timers, 3 ADCs, 13 communication interfaces |
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