Chinese clones of STM32

Forum|Forum|7 years ago
April 4, 2019
4 replies
2580 views

Hello friends,

I am working on STM32L151RDT6 and today I was trying to read the unique ID using the ST HAL.

I have around 20 boards with the same chip and when I read the unique ID it comes out that all of them have the same ID.

In addition if I start the MCU in USB bootloader mode and I see the message of the Linux kernel, I get the same situation:

[ 8093.003173] usb 2-1.7: USB disconnect, device number 38
[ 8111.661825] usb 2-1.7: new full-speed USB device number 39 using ehci-pci
[ 8111.775013] usb 2-1.7: New USB device found, idVendor=0483, idProduct=df11
[ 8111.775019] usb 2-1.7: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 8111.775022] usb 2-1.7: Product: STM32 BOOTLOADER
[ 8111.775024] usb 2-1.7: Manufacturer: STMicroelectronics
[ 8111.775027] usb 2-1.7: SerialNumber: 194738320000

Serial number "194738320000" is the same for all the boards I have.

I found out on a forum that this strange behavior is attributed to Chinese clones despite they were purchased from a famous distributor.

Did anyone experienced the same?

Should I report to ST?

Thank you in advance

STM32L1 series

This topic has been closed for replies.

I

Imen.D

Technical Moderator

Hello @Cesare Riva ,

Please check the DEV_ID in DBGMCU_IDCODE in the RM0038 (section 30.6.1 MCU device ID code).

Regards,

Imen

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C

Cesare RivaAuthor

Associate II

Thank you Imen for the reply.

DEV_ID is 0x0436

REV_ID is 0x1038

Chinese are experts to clone stuff, so I guess also DEV_ID is cloned