Hi Arsenijs, > The simplest (and workable) solution contains three components: > https://cdn.hackaday.io/images//835881528719783422.png
How is it any better than the 74AXP1T34 solution which I outlined in detail in my original post? My proposed solution adds just *one* component to the board, which is available in 1.0x1.0 mm, 1.0x0.9 mm and 0.8x0.8 mm QFN packages, and costs about 70 cents from Digi-Key. I would not want to use your proposed solution in a board design that costs ~4 kUSD fully at risk to produce. The reset generated by your circuit is not coordinated with any of the system's existing on/off/boot/reset sequence control signals; one might be able to tune the R and C values to get the timing approximately right, but the slow rise of the reset line would still be bad. OTOH, my proposed solution takes an already existing and ideally suited reset signal and simply level-converts it from 1.5 V to the needed 2.8 V. > If your chip(s) don't have > hysteresis RST inputs, you might want to put a single-gate non-inverting > buffer In my proposed solution I am already using a single-gate non-inverting buffer, it just also has separate Vcci for input and Vcco for output to support logic voltage level translation. > or some other gate if you want to use RST signal from other > sources at the same time. That's what I am doing, except that there is no need for your proposed RC circuit at all because there already exists a perfectly suitable reset signal, just at a wrong voltage logic level. M~ _______________________________________________ Community mailing list Community@freecalypso.org https://www.freecalypso.org/mailman/listinfo/community