User's Manual

TiWi-uB1 Module
DATASHEET
The information in this document is subject to change without notice.
330-0132 Copyright © 2013 LS Research, LLC Page 11 of 22
32-kHz INTERNAL RC OSCILLATOR
Characteristic
Condition
Min
Typ
Max
Unit
Calibrated frequency (1)
32768
Hz
Frequency accuracy after calibration
-40
40
ppm
Temperature coefficient(2)
±0.2
%
Supply-voltage coefficient
3
%/V
Calibration time(3)
2
mS
Table 11 32 kHz Internal Clock Requirements
1) The calibrated 32-kHz RC oscillator frequency is 32-MHz divided by 977
2) Frequency drift when temperature changes after calibration
3) When the 32-kHz RC oscillator is enabled, it is calibrated when a switch from the 16-MHz RC oscillator to the 32-MHz crystal oscillator is
performed while SLEEPCMD.OSC32K_CALDIS is set to 0.