From dd5bc519731a95b89e51957f2e07300f93893696 Mon Sep 17 00:00:00 2001
From: Nejc <38460081+thedexboy@users.noreply.github.com>
Date: Sat, 21 Jan 2023 20:50:58 +0100
Subject: [PATCH] Update pcf8574.rst (#2608)

* Update pcf8574.rst

* Update components/pcf8574.rst

Co-authored-by: Jesse Hills <3060199+jesserockz@users.noreply.github.com>

Co-authored-by: Jesse Hills <3060199+jesserockz@users.noreply.github.com>
---
 components/pcf8574.rst | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/components/pcf8574.rst b/components/pcf8574.rst
index 6cb1cc503..b8f04c17d 100644
--- a/components/pcf8574.rst
+++ b/components/pcf8574.rst
@@ -55,6 +55,9 @@ Configuration variables:
   Defaults to ``0x21``.
 - **pcf8575** (*Optional*, boolean): Whether this is a 16-pin PCF8575. Defaults to ``false``.
 
+.. note::
+
+    If you use PCF8575, pin numbers are from 0 to 15, not 0 to 7 and 10 to 17 as datasheet states!
 
 Pin configuration variables:
 ****************************