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Recently I've been fiddling around with this RGB LED board out of an Illuminated Arcade Joystick. Right now, it has a set of pre-programmed sequences that light up different LED combinations and change the overall RGB colour. This is all controlled by transistors carrying the supply voltage and...
Was cleaning out an old chemical plant / lab and found some IC's in an electrical room. Markings on the bottom lead me to believe they are from 68 as this plant ran between the 60's to 2015. Any help IDing them or how to proceed in learning what they do would be much appreciated!
I've a microcontroller board on which the micontroller's identification was sanded and I would like to identify it.
The microcontroller's case is a TQFP44 or LQFP44
Analysing the PCB's electrical links, I see that :
The crystal, whose rated frequency is 11.0592 MHz, is attached to pins 30...