RGB flicker LED : weekend die-shot

Unlike previous LED, this one is completely deterministic: diodes differ slightly only in RC oscillator frequency (~±10%). Regular structure at the lower-left side suggests that it's some sort of microcode-driven design.

Die size 553x474 µm, 1.5µm technology.

Thanks for this interesting chip to ASIP department of Gomel State University.

After metalization etch: