[Verse 1] When devices need to talk, there's a way to make them sync SPI and I2C protocols, they're the missing link Serial communication flowing, data bit by bit Master calls the shots while slaves respond to it [Chorus] SPI's got four wires, Clock and Data in and out MOSI MISO dancing, that's what it's about I2C needs just two, SDA SCL in line Address first then data, everything's aligned Serial buses connecting, making systems shine [Verse 2] SPI master generates the clock, slaves follow the beat Full duplex conversation, data streams complete Chip select goes low to choose which slave will play Multiple devices waiting for their turn to say [Chorus] SPI's got four wires, Clock and Data in and out MOSI MISO dancing, that's what it's about I2C needs just two, SDA SCL in line Address first then data, everything's aligned Serial buses connecting, making systems shine [Verse 3] I2C is different, it's a multi-master game Start bit gets attention, address stakes the claim Seven bits for addressing, eighth bit read or write ACK means message received, everything's alright [Bridge] Pull-up resistors holding lines up high Open drain outputs let the voltage fly Bus arbitration when masters collide Clock stretching slaves can make the timing slide [Chorus] SPI's got four wires, Clock and Data in and out MOSI MISO dancing, that's what it's about I2C needs just two, SDA SCL in line Address first then data, everything's aligned Serial buses connecting, making systems shine [Outro] Sensors, displays, memory chips galore These protocols unlock each hardware door Choose SPI for speed or I2C for space Serial communication puts everything in place
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