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Document PWM pins of Nano Every/33 IoT/BLE/BLE Sense #717

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Aug 19, 2020
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Document PWM pins of Nano Every/33 IoT/BLE/BLE Sense #717

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28 changes: 15 additions & 13 deletions Language/Functions/Analog IO/analogWrite.adoc
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Expand Up @@ -19,19 +19,21 @@ subCategories: [ "Analog I/O" ]
=== Description
Writes an analog value (http://arduino.cc/en/Tutorial/PWM[PWM wave]) to a pin. Can be used to light a LED at varying brightnesses or drive a motor at various speeds. After a call to `analogWrite()`, the pin will generate a steady rectangular wave of the specified duty cycle until the next call to `analogWrite()` (or a call to `digitalRead()` or `digitalWrite()`) on the same pin.
[options="header"]
|====================================================================================================
| Board | PWM Pins | PWM Frequency
| Uno, Nano, Mini | 3, 5, 6, 9, 10, 11 | 490 Hz (pins 5 and 6: 980 Hz)
| Mega | 2 - 13, 44 - 46 | 490 Hz (pins 4 and 13: 980 Hz)
| Leonardo, Micro, Yún | 3, 5, 6, 9, 10, 11, 13 | 490 Hz (pins 3 and 11: 980 Hz)
| Uno WiFi Rev.2 | 3, 5, 6, 9, 10 | 976 Hz
| MKR boards * | 0 - 8, 10, A3 (18), A4 (19) | 732 Hz
| MKR1000 WiFi * | 0 - 8, 10, 11, A3 (18), A4 (19) | 732 Hz
| Zero * | 3 - 13, A0 (14), A1 (15) | 732 Hz
| Due ** | 2-13 | 1000 Hz
| 101 | 3, 5, 6, 9 | pins 3 and 9: 490 Hz, pins 5 and 6: 980 Hz
|====================================================================================================
{empty}* In addition to PWM capabilities on the pins noted above, the MKR and Zero boards have true analog output when using `analogWrite()` on the `DAC0` (`A0`) pin. +
|========================================================================================================
| Board | PWM Pins | PWM Frequency
| Uno, Nano, Mini | 3, 5, 6, 9, 10, 11 | 490 Hz (pins 5 and 6: 980 Hz)
| Mega | 2 - 13, 44 - 46 | 490 Hz (pins 4 and 13: 980 Hz)
| Leonardo, Micro, Yún | 3, 5, 6, 9, 10, 11, 13 | 490 Hz (pins 3 and 11: 980 Hz)
| Uno WiFi Rev2, Nano Every | 3, 5, 6, 9, 10 | 976 Hz
| MKR boards * | 0 - 8, 10, A3, A4 | 732 Hz
| MKR1000 WiFi * | 0 - 8, 10, 11, A3, A4 | 732 Hz
| Zero * | 3 - 13, A0, A1 | 732 Hz
| Nano 33 IoT * | 2, 3, 5, 6, 9 - 12, A2, A3, A5 | 732 Hz
| Nano 33 BLE/BLE Sense | 1 - 13, A0 - A7 | 500 Hz
| Due ** | 2-13 | 1000 Hz
| 101 | 3, 5, 6, 9 | pins 3 and 9: 490 Hz, pins 5 and 6: 980 Hz
|========================================================================================================
{empty}* In addition to PWM capabilities on the pins noted above, the MKR, Nano 33 IoT, and Zero boards have true analog output when using `analogWrite()` on the `DAC0` (`A0`) pin. +
{empty}** In addition to PWM capabilities on the pins noted above, the Due has true analog output when using `analogWrite()` on pins `DAC0` and `DAC1`.

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