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-rw-r--r--docs/library/pyb.DAC.rst4
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diff --git a/docs/library/pyb.DAC.rst b/docs/library/pyb.DAC.rst
index 6041151b0f..7b5b1a6821 100644
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+++ b/docs/library/pyb.DAC.rst
@@ -66,6 +66,10 @@ Methods
Reinitialise the DAC. ``bits`` can be 8 or 12.
+.. method:: dac.deinit()
+
+ De-initialise the DAC making its pin available for other uses.
+
.. method:: dac.noise(freq)
Generate a pseudo-random noise signal. A new random sample is written