CC3230SF datasheet(49/104 Pages) TI

Part #	CC3230SF

Description	CC3230S and CC3230SF SimpleLink??Wi-Fi짰 2.4GHz Wireless MCU with Coexistence

PDF	104 Pages

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Manufacturer	TI [Texas Instruments]

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8.16.5.3 Fast Clock (Fref) Using an External Crystal

The CC3230x device also incorporates an internal crystal oscillator to support a crystal-based fast clock. The

crystal is fed directly between WLAN_XTAL_P (pin 23) and WLAN_XTAL_N (pin 22) with suitable loading

capacitors.

Figure 8-11 shows the crystal connections for the fast clock.

WLAN_XTAL_P

WLAN_XTAL_N

40 MHz

GND

6.2 pF

SWAS031-030

A. The crystal capacitance must be tuned to ensure that the PPM requirement is met. See CC31xx & CC32xx Frequency Tuning for

information on frequency tuning.

Figure 8-11. Fast Clock Crystal Connections

Section 8.16.5.3.1 lists the WLAN fast-clock crystal requirements.

8.16.5.3.1 WLAN Fast-Clock Crystal Requirements

CHARACTERISTICS

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Frequency

MHz

Frequency accuracy

Initial plus temperature plus aging

±20

ppm

Crystal ESR

40 MHz

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CC3230S, CC3230SF

SWRS226 – FEBRUARY 2020

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CC3230SF Datasheet(PDF) 49 Page - Texas Instruments