STM32WB55CGUX (48 pin) Touch Sense Controller (TSC) capabilities
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2024-09-09 06:49 AM - last edited on 2024-11-26 10:10 AM by Andrew Neil
Hi,
we are looking for a microcontroller fitting the following features:
- 1MB Flash
- 256kB RAM
- BLE
- 48 pins (non BGA)
- Touch Sense Controller (TSC)
- Active and stock
We pointed to STM32WB55CGUX but we see the following note on the datasheet STM32WB55C (page 48):
Does that mean that we do not have any available TSC sensing channel on the QFN48 version? Or just that the number of channels is limited? Checking with the Pinout & Configuration tool of the STM32CubeIDE, we do not see any available TSC port at any pin of the STM32WB55CGU6TR (48 pins QFN version).
Instead, we have selected the STM32WBA55CGU6X one, to the detriment of RAM, being 128kB instead of 256kB. If you have any microcontroller suggestion besides this one fitting the main requirements, we would really appreciate it.
Thanks in advance.
Regards,
eesy-ES team.
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2024-09-09 08:48 AM
For the body proximity detection, you can configure it using the TSC.
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.
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2024-09-09 07:25 AM
Hello @eesy-ES and welcome to the ST Community :smiling_face_with_smiling_eyes:.
The TSC is not supported by the STM32WB55/35 with QFPN48 Package.
For the STM32WBA55, your choice is the most compatible with the needs you have specified on your post (maximum RAM size available for the STM32WBA55 is 128 Kbytes). the STM32WBA55CGU6TR will be the best choice since you can use both NUCLEO-WBA55CG and STM32WBA55G-DK1 for evaluation before Board conception, Mass Market, ...
Best Regards.
STTwo-32
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2024-09-09 07:42 AM
Thanks for the quick reply.
Another question regarding this Touch Sense Controller is if we can make it to work for body proximity detection, instead of just for touch little keys. If so, could you lead us to documentation where to know more about that?
Best Regards,
eesy-ES team.
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2024-09-09 08:48 AM
For the body proximity detection, you can configure it using the TSC.
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.
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2024-09-11 03:21 AM
Thanks for the answer! We will review all those docs.