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| -rw-r--r-- | source/adc.rst | 10 | ||||
| -rw-r--r-- | source/prolog.rst | 3 |
2 files changed, 7 insertions, 6 deletions
diff --git a/source/adc.rst b/source/adc.rst index a749201..18c54ab 100644 --- a/source/adc.rst +++ b/source/adc.rst @@ -45,11 +45,11 @@ together, or the same voltage can even be sampled by multiple ADC pins at the same time. Another important factor when taking a voltage reading is the -reference voltages that the sample is being compared against. In the -case of the Maple, the high reference is |vcc| and the low reference -is ground. This means that noise or fluctuations on either |vcc| or -ground will affect the measurement. It also means that the voltage you -are trying to sample must be between ground and 3.3 V. +reference voltages that the sample is being compared against. For +Maple, the high reference is |vdda| and the low reference is ground. +This means that noise or fluctuations on either |vdda| or ground will +affect the measurement. It also means that the voltage you are trying +to sample must be between ground and 3.3 V. .. _adc-range: diff --git a/source/prolog.rst b/source/prolog.rst index 2823947..8606555 100644 --- a/source/prolog.rst +++ b/source/prolog.rst @@ -3,5 +3,6 @@ .. recommended by the Sphinx people, who have other ways of doing it. .. Common substitutions -.. |vcc| replace:: V\ :sub:`cc` +.. |vcc| replace:: V\ :sub:`CC` +.. |vdda| replace:: V\ :sub:`DDA` .. |i2c| replace:: I\ :sup:`2`\ C |