topic HVI (ADC) input voltage range in S12 / MagniV Microcontrollers

HVI (ADC) input voltage range

aaronlee — Mon, 24 Apr 2017 01:01:08 GMT

Hi,

I have some question about HVI as follow:

How many input voltage range will be measure by ADC?

VHVI= -27 ~ +42V (in Table G-2. Absolute Maximum Ratings - High Voltage Input Pins - Port L)

What happen when i connect +15V to HVI pin with Ratio of 2:1, 6:1 or bypass?

danielmartynek — Mon, 24 Apr 2017 16:36:17 GMT

Hi,

The ADC input voltage must be in range of V_RL; V_RH.

An input level that exceeds this range will be clipped.

In case of HVI, the input voltage cannot reach the full scale of the ADC.

See absolute error on ADC (HVI Electrical Characteristics, Table G-1).

Regards,

Daniel