Measured on a Texas Instruments reference design with
Tc = 25 °C, VDDS = 3.0 V, unless otherwise noted.
periodically against XOSC_HF(2)
(1) When using RCOSC_LF as source for the low frequency system clock
(SCLK_LF), the accuracy of the SCLK_LF-derived Real Time Clock (RTC) can be improved by
measuring RCOSC_LF relative to XOSC_HF and compensating for the RTC tick speed. This
functionality is available through the TI-provided Power driver.
(2) TI driver software calibrates the RTC every time XOSC_HF is
(3) Some device's variation can exceed 1000 ppm. Further calibration will
not improve variation.