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<span style="color: #002d87;">2 x I2C</span><br /><span style="color: #002d87;"> 1 x MMC (No WiFi version)</span><br /><span style="color: #002d87;"> 1 x McBSP/I2S/SSI (Digital Serial Audio Interface)</span><br /><span style="color: #002d87;"> 3 x SPI</span><br /><span style="color: #002d87;"> 39 x GPIO (Maximum number of GPIOs)</span><br /><span style="color: #002d87;"> 1 x PWM</span><br /><span style="color: #002d87;"> 3 x UART (RS232 and RS485 interfaces available)</span><br /><span style="color: #002d87;"> 1 x Stereo Line Audio In mini jack</span><br /><span style="color: #002d87;"> 1 x Stereo Line Audio Out mini jack</span>