The recommended layout and routing for the MAX7310AUE+ involves keeping the analog and digital grounds separate, using a solid ground plane, and minimizing the length of the traces between the MAX7310AUE+ and the microcontroller. A 4-layer PCB with a dedicated ground plane is recommended.
To ensure reliable communication, use a dedicated I2C bus, keep the clock frequency below 400 kHz, and use a pull-up resistor on the SCL line. Also, ensure that the microcontroller's I2C peripheral is configured correctly and that the MAX7310AUE+ is properly addressed.
The MAX7310AUE+ can sink or source up to 25mA per I/O pin, but the total current should not exceed 100mA. It's recommended to use external buffers or drivers for high-current applications.
The POR and BOR features can be handled by using an external reset supervisor or by using the microcontroller's internal reset circuitry. The MAX7310AUE+ can also be configured to generate a reset signal to the microcontroller during power-on or brown-out conditions.
A 0.1uF ceramic capacitor should be placed as close as possible to the VCC pin of the MAX7310AUE+, and a 10uF electrolytic capacitor can be used in parallel to filter out low-frequency noise.
MAX7310AUE+ datasheet
by Maxim Integrated Products
