STM32WB55CC datasheet(48/193 Pages) STMICROELECTRONICS

Part #	STM32WB55CC

Description	Multiprotocol wireless 32-bit MCU Arm®-based Cortex®-M4 with FPU, Bluetooth® 5.2 and 802.15.4 radio solution

PDF	193 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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48 / 193 page

Functional overview

STM32WB55xx STM32WB35xx

48/193

DS11929 Rev 11

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

Note:

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

on QFPN48) and subject to I/O availability.

STM32WB55CC Datasheet(PDF) 48 Page - STMicroelectronics