Solution
According to the technical characteristics of the MP300 TC3:
Vcc fall and rise time can be adjusted from
20 ns to 1.8 V / ms with a resolution of 20 ns.
Also, applicable values for Vcc are between
0 and 9V with a resolution of 5 mV and a precision of +/- 9mV.
To reach 9V it will take 5ms with Vcc rise time evolving at 1.8 V / ms.
With these combinations of technical characteristics
Vcc maximum applicable value + Vcc rise time range
Maximum Vcc rise time is 5ms.