58.7.5 Slow RC Oscillator

Table 58-42. Slow RC Oscillator Characteristics
Symbol Parameter Conditions Min Typ Max Unit
VDDBU Supply voltage range (VDDBU)(1) – VIT- – 3.6 V
fSLOWRC Frequency accuracy VDDBU = 3.3V,

TJ = 0 to +50°C

 31 32 33 kHz
VDDBU = VIT- to 3.6V

TJ = -40 to +125°C

 29 – 35 kHz
Note:
  1. In this table, VIT- corresponds to the negative-going input threshold voltage of the VDDBU POR (see the table VDDBU POR Characteristics). Operation of the device backup section, and in particular of the Slow RC oscillator, is granted down to the VDDBU POR VIT- threshold.