I'm hoping someone could guide me in the right direction. I have an ongoing project that seemed simple: to utilize a push button. When you press it once, it toggles the LEDs on; when you press it again, it toggles the LEDs off. The entire system operates on a coin cell battery and needs to be a very small PCB.
I managed to get the circuit to function with both an ATtiny10 and a 555 design. However, the power consumption in the off state is too high. I am aiming for the lowest possible power usage when it's in the off state.
I purchased some bistable modules from AliExpress to experiment with and understand their operation. I was astonished by their low power consumption: it's 0.5 uA, but I am struggling to work out how it works. My best guess is a D-type flip-flop?
I've attempted to search for the part number, but I couldn't find anything. Does anyone have knowledge about how something like the board below would work?
Or am I pursuing the wrong approach in designing something like this?
My objectives are:
- Low power consumption
- Cost-effective assembly
- Minimal part count
- Utilization of the smallest possible component size 0603/SOT23-6
Any guidance or insights would be greatly appreciated. Thank you!
I'm utterly amazed at how knowledgeable you all are! I spent a significant amount of time searching for that IC wiht no luck but some how you found it!, the explanation provided by "Kuba hasn't forgotten Monica" is absolutely fantastic. It's a shame that I can't fully grasp the circuit simulation, I have just been learning Kicad and doing some simple pcb layouts :( I still got a lot to learn.
Here's the Aliexpress link