Hi!
A friend of mine was doing the same project with 8051 uc. he failed & then bought a development kit for it. I also read datasheet of TDC-GP1.it shows possible interfacing with a
microcontroller.It has built in ROM & some addresses are given to read & write to.But the main problem is not reading & writing but to generate result,calibrate it & then reading is easy part.
here is link to TDC-GP1 datasheet.
http://www.acam.de/fileadmin/Downloa...h/DB_GP1_e.pdf

Only if experienced programmers mister_e or Bruce would be kind enough to look at it & give some suggestions and write a skeleton code for it.