FreeCalypso > hg > freecalypso-schem2

annotate venus/src/pinouts/BAV99W.pinout @ 96:ae6951a70d2b

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U403: change from 74LVC2G125 to 74LVC2G126 The two parts have the same footprint and pinout, but '126 3-state buffers have active-high OE inputs instead of active-low. The change is purely for software benefit: having GPIO 11/12 set to 1 correspond to that current contribution being enabled will be much more intuitive for developers and tinkerers.
author Mychaela Falconia <falcon@freecalypso.org>
date Mon, 09 May 2022 19:27:11 +0000
parents a1b55af7f04d
children
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62
a1b55af7f04d clamping diode pair for the buzzer driving circuit
Mychaela Falconia <falcon@freecalypso.org>
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1 Neg_rail 1
a1b55af7f04d clamping diode pair for the buzzer driving circuit
Mychaela Falconia <falcon@freecalypso.org>
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2 Pos_rail 2
a1b55af7f04d clamping diode pair for the buzzer driving circuit
Mychaela Falconia <falcon@freecalypso.org>
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3 Signal 3