Please forgive the noobish question, but I'm new to microcontrollers (just started learning as much as possible over the last 2-3 weeks).
From what I've found, the AVR ATtiny series uC's do not feature integrated UART controllers. I've seen some examples for serial communication using the older 8051/AT89C2051 modules, but haven't found much on using an AVR chip without the onboard UART. I imagine it can be done, but it would have to be code driven, correct?
The reason I'm looking at the ATtiny series is cost. I'm trying to integrate a microcontroller into a heater/thermostat circuit that needs to communicate serially to a LED driver. I need to choose a uC I can purchase in low volumes for $2-3 per unit that will fit this purpose.
Does anyone have a link with example code/schematic(s), or can anyone provide any input?
Thanks in advance!