June 3, 2015
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: