STM32WBA50KG datasheet(78/110 Pages) STMICROELECTRONICS

Part #	STM32WBA50KG

Description	Multiprotocol wireless 32-bit MCU Arm®-based Cortex®-M33 with FPU, Bluetooth® 5.4 radio solution

PDF	110 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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78 / 110 page

Electrical characteristics

STM32WBA50KG

78/110

DS14688 Rev 1

Figure 12. LSE typical application with a crystal

Note:

No external resistors are required between OSC32_IN and OSC32_OUT, and it is forbidden

to add one.

The clock input waveforms are shown in Figure 13 and Figure 14.

Figure 13. LSE external square clock source AC timing diagram

MS30253V2

OSC32_IN

OSC32_OUT

Drive

programmable

amplifier

fLSE

32.768 kHz

resonator

Resonator with integrated

capacitors

CL1

CL2

Table 50. LSE clock source requirements(1)

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

fLSE

External clock source

frequency(2)

32.000 32.768

kHz

fTOL

Frequency tolerance

Includes initial accuracy,

stability over

temperature, and aging

Bluetooth

Low Energy

-500

500

ppm

VLSE_ext

Clock input voltage range

VDD

VLSE_ext_PP

Clock input peak-to-peak

amplitude(3)

-0.3

VDD

DuCyLSE

Duty cycle

1. Specified by design, not tested in production.

2. fLSE = 1/tLSE.

3. AC coupled is supported (10 pF capacitor).

DuCyLSE

VLSE_ext

tLSE = 1/fLSE

VLSE_ext_PP

DuCyLSE

STM32WBA50KG Datasheet(PDF) 78 Page - STMicroelectronics

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