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Update analogReference.adoc #299

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Update analogReference.adoc #299

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Update analogReference.adoc
steamboating Dec 31, 2017
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Update Language/Functions/Analog IO/analogReference.adoc
karlsoderby Dec 1, 2023
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11 changes: 6 additions & 5 deletions Language/Functions/Analog IO/analogReference.adoc
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Expand Up @@ -29,12 +29,13 @@ Arduino AVR Boards (Uno, Mega, etc.)

Arduino SAMD Boards (Zero, etc.)

* AR_DEFAULT: the default analog reference of 3.3V
* AR_INTERNAL: a built-in 2.23V reference
* AR_INTERNAL1V0: a built-in 1.0V reference
* AR_INTERNAL1V65: a built-in 1.65V reference
* AR_INTERNAL2V23: a built-in 2.23V reference
* AR_DEFAULT: the default analog reference of 3.3V (VDDANA)
* AR_INTERNAL: 1/1.48 VDDANA (only for VDDANA > 2.0V) = 2.23V reference in a 3.3V system
* AR_INTERNAL1V0: a built-in 1.0V reference -> use this to measure your battery voltage!
* AR_INTERNAL1V65: 1/2 VDDANA = 1.65V reference in a 3.3 V system
* AR_INTERNAL2V23: 1/1.48 VDDANA (only for VDDANA > 2.0V) = 2.23V reference in a 3.3V system
* AR_EXTERNAL: the voltage applied to the AREF pin is used as the reference
(For Details see Atmel SAMD21 Data sheet, 32.8.2 Reference Control)
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Arduino SAM Boards (Due)

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