I am building what amounts to an in-circuit programmer for an ATTiny85, by surrounding the programming-relevant pins with hex buffers that can be set to high impedance. Using these, the tiny will be hooked to the Arduino when being programmed, and hooked to the breadboard when not being programmed.
The question is, suppose I wish to use the tiny in a 3.3v circuit, but I'm programming it from a 5 v. arduino. Will the tiny be tolerant of the 5v. programming, even if it is powered at 3.3 v.?
Thanks in advance for any help.