VCCHIB is a 1.8V keep-alive power supply that driv...
# sky130
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VCCHIB is a 1.8V keep-alive power supply that drives the "essential" logic that stays on even during sleep mode. VSWITCH drives the analog switching and should be connected to a 3.3V supply. I have been connecting VCCHIB to VCCD because I don't support sleep or low-power modes on caravel, and I've been connecting VSWITCH to VDDIO.