6.15 48MHz Clock Input (TCXO)

Measured on a Texas Instruments reference design with Tc = 25°C, VDDS = 3.6V, unless otherwise noted.(1)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Clock frequency

48

MHz

TCXO clipped sine output, peak-to-peak

TCXO clipped sine output connected to pin

X48P through series capacitor

0.6

1.58

V

TCXO with CMOS output, High input voltage

TCXO with CMOS output directly coupled to

pin X48P

VDDR-0.

3

VDDR

V

TCXO with CMOS output, Low input voltage

0

0.3

V

(1)

Probing or otherwise stopping the TCXO while the DC/DC converter is enabled may cause permanent damage to the device.

6.16 32kHz RC Oscillator (LFOSC)

Measured on a Texas Instruments reference design with Tc = 25°C, VDDS = 3.6V, unless otherwise noted.

MIN

TYP

MAX

UNIT

Calibrated frequency

32.768 (1)

kHz

(1)

When using LFOSC as source for the low frequency system clock (LFCLK), the accuracy of the LFCLK derived Real Time Clock (RTC)

can be improved by measuring LFOSC relative to HFXT and compensating for the RTC tick speed.

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CC1404P

SWRS300 – SEPTEMBER 2026

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