Let me close this question.
I have used these two single-chip microcomputers, and one of the wifi alarm host projects in the Wuji single-chip special training camp uses stm32f103c8t6.
Both stm32f103VET6 and stm32f103c8t6 are microcontrollers based on the ARM Cortex-M3 core launched by STMicroelectronics.
They have some differences in hardware specifications and performance. Let me explain their differences in detail below:
1. Package form
First of all, the most obvious thing is that the package pins of stm32f103vet6 and stm32f103c8t6 are different.
The stm32f103VET6 uses a 100-pin LQFP package, while the stm32f103c8t6 uses a 48-pin LQFP package, so their pin differences need to be considered when designing the PCB.
Also, stm32f103VET6 also supports LFBGA packaging, but stm32f103c8t6 does not.
2. Memory size
The memory capacity of stm32f103VET6 and stm32f103c8t6 is also different.
Stm32f103VET6 has 512KB of Flash memory and 64KB of SRAM memory, while stm32f103c8t6 has only 64KB of Flash memory and 20KB of SRAM memory.
The memory size of Stm32f103VET6 is basically three times that of stm32f103c8t6.
This means that Stm32f103VET6 can store more programs and data and do more complex projects.
stm32f103c8t6 is relatively suitable for some small and medium-sized project applications.
3. Peripheral resources
Similarly, there are differences in the peripheral resources of stm32f103VET6 and stm32f103c8t6.
stm32f103VET6 has the following peripheral resources:
- 8 timers
- 3 ADCs, support 16 channels
- 2 DACs
- 2 I2C interfaces
- 5 USART interfaces
- 3 SPI interfaces
- 2 IIS interfaces
- 2 CAN interfaces
- 1 USB interface
- 1 SDIO interface
- 1 LCD interface
stm32f103c8t6 has the following peripheral resources:
- 4 timers
- 2 ADCs, support 10 channels
- 2 I2C interfaces
- 3 USART interfaces
- 2 SPI interfaces
- 1 USB interface
Specifically, the official website data sheet is the main one. Generally speaking, stm32f103VET6 supports more peripherals and can meet the needs of more applications.
4. Power consumption
Look at the picture above, the left is stm32f103c8t6, the right is stm32f103VET6, the power supply voltage is the same, but the power consumption is different.
The stm32f103c8t6 has a minimum of 1.7uA in low power mode, and the power consumption will increase by 373uA for every 1MHZ increase in frequency.
The minimum power consumption of stm32f103VET6 is 1.9uA in low power mode, and the power consumption will increase by 421uA for every 1MHZ increase in frequency.
Relatively speaking, the power consumption of stm32f103VET6 is higher, after all, there are many peripheral resources.
5. Price
The last is the price. Let’s check it on Easytronic. The price of stm32f103VET6 is almost twice as high as that of stm32f103c8t6.
The above is the difference between these two single-chip microcomputers. In fact, it is more intuitive to compare them on the official website.
Let me talk about a more interesting phenomenon for you, let me ask you a question first:
Is the MCU with better performance and resources definitely more expensive than a poor one?
You will definitely say yes, but not necessarily. It is also related to the volume of the market. The larger the volume, the lower the production cost.
I have encountered such a chip before, but I forgot which one it is. The MCU with low performance and few resources is expensive, but the quantity is too small.
Finally, I will talk about my selection experience. Generally, several aspects need to be considered: functional requirements, cost requirements, size requirements, customer special requirements, development cycle, delivery cycle, and power consumption requirements.
There may be omissions, but these are the main ones. Generally, the selection is done by the cooperation of hardware engineers and single-chip microcomputer engineers.
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https://blog.csdn.net/weixin_43982452/article/details/114134096