VDD/(RC) while Voltage drop on R >> Voltage drop on C

Here is the equation for time T in which voltage changes its value from value V(t=0) to V(t=T).

T=RC*ln((V(cap=open)-V(t=0))/( V(cap=open)-V(t=T)))

If you need rise time form 10% to 90% for step of height V1.
V(cap=open)=V1
V(t=0)=0.1*V1  
V(t=T)=0.9*V1

Tr=RCln(0.9/0.1):
Tr=2.19*RC=4.39ms