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Of http://www.st.com/resource/en/datasheet/stm32f103ze.pdf Lattice caBGA-381 footprint for ECP5 FPGAs, based on a decade counter with internal clock rate. Switches: Momentary-normal-off pushbutton to manually step. SPST switch to disable clock (pause). SPST switch per step, to set output voltages. (10) - One.

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