What are values of min and max for the calibrated RC oscillator frequency of Table 7 in the AM18x5 Datasheet? Only Typ values are shown at TA=-40C to +85C, VCC = 1.7 to 3.6 V.
Only the Uncalibrated RC Oscillator Frequency (FRCU) specifies min/max values (89Hz to 220Hz) . Please see Figure 4 in the datasheet and below for the typical frequency variation of calibrated RC over temperature and voltage. Typical calibrated RC oscillator frequency (FRCC) is 123Hz to 145Hz for -40C to +85C which is about 128 -4%/+13%. The min/max range of an uncalibrated RC will be larger. Only offset calibration is performed in the factory (no temperature calibration). The accuracy of the RC oscillator is 122 -27%/+80% for full operating conditions based on MIN/TYP/MAX of FRCU.
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