STM32WL33CBV7 datasheet(58/91 Pages) STMICROELECTRONICS

Part #	STM32WL33CBV7

Description	Multiprotocol LPWAN 32-bit MCU Arm® Cortex®-M0 2(G)FSK, 4(G)FSK, ASK, D-BPSK, up to 256KB flash, 32KB SRAM

PDF	91 Pages

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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6.3.7.4

Harmonic emission at 915 MHz

Table 44. Harmonic emission at 915 MHz

Parameter

Test condition

10 dBm

16 dBm

20 dBm

Unit

As detailed above

dBm

As detailed above

-50

-42

As detailed above

-58

-55

-52

As detailed above

-63

-59

-65

As detailed above

-61

-55

-46

As detailed above

-63

-34

-46

As detailed above

-61

-58

-68

6.3.8

Frequency synthesizer

Characteristics measured over recommended operating conditions. All typical values are referred to 25 °C

temperature, VBAT = 3.3 V, SMPS ON Vsmps = 1.4 V, SMPS clock frequency = 4 MHz, HSE ON, GMC 0x0A,

WFI mode. The whole performance is referred to the reference design with a 50-ohm antenna connector.

Table 45. Frequency synthesizer parameters

Parameter

Test conditions

HPM

Unit

Frequency step size

For 433 MHz

5.72

For 868-915 MHz

11.44

RF carrier phase noise 433.5 MHz

10 kHz

-108

dBc/Hz

100 kHz

-112

1 MHz

-130

10 MHz

-147

RF carrier phase noise 868 MHz

10 kHz

-105

100 kHz

-108

1 MHz

-124

10 MHz

-142

RF carrier phase noise 915 MHz

10 kHz

-104

100 kHz

-108

1 MHz

-121

10 MHz

-140

STM32WL33xx

Electrical characteristics

DS14221 - Rev 5

page 58/91

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