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inconsistent Information concerning STM32L071

Zt Liu
Senior III
Posted on August 22, 2017 at 07:47

Hi, 

There is an inconsistent information about the numbers of usart in series STM32L071KBTx and STM32L071KZTx

(both LQFP32.)

in the datasheet, it says there are 3 usart:

0690X00000602UMQAY.bmp

=====================================================================

but in the STM32CubeMx, if I choose L071KBTx, I got 4 USART?!

0690X00000602RtQAI.bmp

Have I misunderstood something....?

There are totally 3 USART or 4 USART in this package??!!

I would like to know!

Thanks in advanced.

=======================================================================

PS:

In the STMCU Finder pc software, if I choose STM32L0x1 and I request 4 USART,

then there will be no LQFP32 package in the result list. 

However, If I use STM32CubeMx, doing the same (choose STM32L0x1 and 4 usart), 

there will be STM32F071KB and STM32F071KZ in the result list.

=======================================================================

Zt.

#usart #stm32l0 #stm32l0x1
1 ACCEPTED SOLUTION

Accepted Solutions
Amel NASRI
ST Employee
Posted on August 23, 2017 at 12:01

Hi

Liu.Zhitai

‌,

For LQFP32 package, there are 4 USARTs available: you can check it based on pinout table.

However, if you use the UFQFPN32 package, only 3 USARTs can be used.

I agree with you that this has to be precised in the Table 2 of the datasheet.

I will check also for ST MCU Finder tool.

-Amel

To give better visibility on the answered topics, please click on Accept as Solution on the reply which solved your issue or answered your question.

View solution in original post

3 REPLIES 3
Amel NASRI
ST Employee
Posted on August 23, 2017 at 12:01

Hi

Liu.Zhitai

‌,

For LQFP32 package, there are 4 USARTs available: you can check it based on pinout table.

However, if you use the UFQFPN32 package, only 3 USARTs can be used.

I agree with you that this has to be precised in the Table 2 of the datasheet.

I will check also for ST MCU Finder tool.

-Amel

To give better visibility on the answered topics, please click on Accept as Solution on the reply which solved your issue or answered your question.

Posted on August 23, 2017 at 12:13

hey, thanks,

I can safely purchase them finally!

Posted on August 23, 2017 at 13:15

Good luck for buying these parts. Hopefully you have good connections!

I have not seen any 32 Pin LQFP device with Flash > 64 kB out in the wild.