The recommended layout and routing for the MAX7313AEG+ involves keeping the analog and digital grounds separate, using a solid ground plane, and minimizing the length of the traces between the device and the capacitors. A 4-layer PCB with a dedicated ground plane is recommended.
To ensure the MAX7313AEG+ is properly powered, use a high-quality, low-ESR capacitor (e.g., 10uF) between VCC and GND, and a 0.1uF bypass capacitor between VCC and GND near the device. Also, ensure the power supply is stable and within the recommended operating range.
The MAX7313AEG+ can support I2C bus frequencies up to 400 kHz. However, the actual frequency limit may be lower depending on the system's capacitance, pull-up resistors, and other factors.
The interrupt output (INT) is an open-drain output, so it requires an external pull-up resistor to VCC. The interrupt is active-low, so it goes low when an interrupt occurs. The interrupt can be cleared by reading the corresponding status register.
The internal pull-up resistors on the MAX7313AEG+ are used to pull up the I2C bus lines (SCL and SDA) when the device is in a low-power state. This helps to reduce power consumption and prevent bus contention.
MAX7313AEG+ datasheet
by Maxim Integrated Products
