AVR is a little unusual amongst 8-bit architectures in that it was designed from the ground up to support C cleanly - it's possibly the world's only 8-bit RISC

AVR is a little unusual amongst 8-bit architectures in that it was designed from the ground up to support C cleanly - it's possibly the world's only 8-bit RISC CPU. As far as I know it's also the only 8-bit architecture officially supported by gcc for the same reason.