Ryan McLean John-Michael Mulesa Joe Perrin Zach Schoenberger.

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Presentation transcript:

Ryan McLean John-Michael Mulesa Joe Perrin Zach Schoenberger

Preliminary Layout using Autorouter Layout Considerations for Peripherals Layout Considerations for the Microcontroller Layout Considerations for the Power Supply [Overview]

[Preliminary Layout]

Keep I2C components close together Keep USB to RS232 IC close to USB connector Headers to access I/O traces Test points on power rails to quickly measure voltage GSM/GPS unit can draw 2 amps – Attempt to use direct, with no via, connection to ground and power [Layout Considerations]

Locate Microcontroller near middle of board Use a Pi filter to ensure clean supply Keep ADC line away from digital I/O traces Small current draw Internal oscillator [Layout Considerations: Microcontroller]

Max current draw is about 2.2 amps – Traces will have to be able to cope About 1.6 mm – Need sufficient bulk capacitance – Minimize Vias on power rails – Single point ground [Layout Considerations: Power Supply]

Preliminary Layout using Autorouter Layout Considerations for Peripherals Layout Considerations for the Microcontroller Layout Considerations for the Power Supply [Summary]

[Questions?]