MAX31856 fastest refresh rate?

Hi Community,

I’ve already searched the forum, but did not find any specific information about this.

Reading the Datasheed of the MAX31856, I see that it has 2 conversion times listed, one for 1-shot reading ( around 200ms) and the other for continous reading (Auto conversion mode,
conversions 2 through n) of around 100ms.

Now, I tried lowering the update_interval, but as soon as I go under 200ms I don’t get any reading from the sensor, which begs the question, does ESPHome use only 1-shot conversions for every reading? Is there a way to switch to continous ?

Here is the config part related to the sensor, quite basic:

sensor:
  - platform: max31856
    name: "Group Temperature"
    id: group_temperature
    internal: True
    mains_filter: 50Hz
    update_interval: 200ms
    cs_pin: GPIO12
  - platform: max31856
    name: "Internal Temperature"
    id: internal_temperature
    internal: True
    mains_filter: 50Hz
    update_interval: 200ms
    cs_pin: GPIO1

Even if working with only one MAX31856 instead of two, has the same effect.
Any ideas ?