STM32WB55RGQ7TR 查看數據表（PDF） - STMicroelectronics

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STM32WB55RGQ7TR

Multiprotocol wireless 32-bit MCU Arm®-based Cortex®-M4 with FPU, Bluetooth® 5 and 802.15.4 radio solution

STMicroelectronics 

Functional overview

STM32WB55xx STM32WB35xx

Note:

The main features of the touch sensing controller are the following:

 Proven and robust surface charge transfer acquisition principle

 Supports up to 18 capacitive sensing channels

 Up to six capacitive sensing channels can be acquired in parallel offering a very good

response time

 Spread spectrum feature to improve system robustness in noisy environments

 Full hardware management of the charge transfer acquisition sequence

 Programmable charge transfer frequency

 Programmable sampling capacitor I/O pin

 Programmable channel I/O pin

 Programmable max count value to avoid long acquisition when a channel is faulty

 Dedicated end of acquisition and max count error flags with interrupt capability

 One sampling capacitor for up to three capacitive sensing channels to reduce the

system components

 Compatible with proximity, touchkey, linear and rotary touch sensor implementation

 Designed to operate with STMTouch touch sensing firmware library

The number of capacitive sensing channels is dependent upon the package (not available

on QFPN48) and subject to I/O availability.

48/193

DS11929 Rev 10

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