How to measure input voltage in STM8l052C6 MCU?

[NPaba]

Hello Respective,

I am trying to measure the input voltage in STM8l052C6 controller but I am unable to do the same. I tried in STM8l152C6 in STMl discovery board and it's working fine there but not in STM8l052C6.

I analysed one thing by my self is address for VREFINT_Factory_CONV is given in datasheet of STM8l152C6 but not in datasheet of STM8l052C6.