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+++ b/README.md
@@ -10,6 +10,12 @@ This library provides an interfacing API for displaying characters and numbers.
   PDSP188x Dot Matrix Display
 </p>
 
+<a href="./media/datasheet.pdf">Datasheet</a>
+
+## Connection
+
+This connection method uses a 595 shift register. For AVR MCUs, you need to connect the CLK, DATA, and LATCH pins to SCK, MOSI, and SS respectively. Connect the remaining pins to any GPIO pin.
+
 ## Example Usage
 
 1. Clone the repository and configure the port numbers inside the `config_{arch}.h` file.
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