PCB Design — question 6 of 10
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You're doing a schematic review before a board goes to layout. It's an I2C bus with two sensors and the MCU, all at 3.3V. The schematic shows SDA/SCL routed correctly to each device, appropriate decoupling, and correct part numbers. What's the one thing you'd specifically hunt for on an I2C schematic that's easy to miss and would make the bus fail silently until you scope it, and how would you catch it before fabrication?