STM32WB15CC datasheet(20/127 Pages) STMICROELECTRONICS

20 / 127 page

Functional overview

STM32WB15CC

20/127

DS13258 Rev 4

In addition, according to Bluetooth specification 5.2, the BLE block provides:



Multiple roles simultaneous support



Master/slave and multiple roles simultaneously



LE data packet length extension (making it possible to reach 800 kbps at application

level)



LE privacy 1.2



LE secure connections



Flexible Internet connectivity options



High data rate (2 Mbps)

The device allows the applications to meet the tight peak current requirements imposed by

the use of standard coin cell batteries. When the high efficiency embedded SMPS



step-down converter is used, the RF front end consumption (Itmax) is only 7.4 mA at the

highest output power (5.5 dBm).

Ultra-low-power sleep modes and very short transition time between operating modes result

in very low average current consumption during real operating conditions, resulting in longer

battery life.

The BLE block integrates a full bandpass balun, thus reducing the need for external

components.

The link between the Cortex®-M4 application processor (CPU1) running the application, and

the BLE stack running on the dedicated Cortex®-M0+ (CPU2) is performed through a

normalized API, using a dedicated IPCC.

3.6.3

RF pin description

The RF block contains dedicated pins, listed in Table 3.

3.6.4

Typical RF application schematic

The schematic in Figure 3 and the external components listed in Table 3 are purely

indicative. For more details refer to the “Reference design” provided in separate documents.

Table 3. RF pin list

Name

Type

Description

RF1

I/O

RF Input/output, must be connected to the antenna through a low-pass matching network

OSC_OUT

32 MHz main oscillator, also used as HSE source

OSC_IN

RF_TX_

MOD_EXT_PA

External PA transmit control

VDDRF

VDD Dedicated supply, must be connected to VDD

VSSRF(1)

VSS To be connected to GND

1. On packages with exposed pad, this pad must be connected to GND plane for correct RF operation.

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