The recommended layout and placement for the MAX823SEUK+ involves keeping the device away from high-current carrying traces, using a solid ground plane, and placing bypass capacitors close to the device. A 4-layer PCB with a dedicated power plane is also recommended.
To ensure proper power-up and initialization, the MAX823SEUK+ requires a power-on reset (POR) circuit, which can be implemented using an external resistor and capacitor. The device also requires a valid input voltage (VCC) and a clock signal (CLK) to operate correctly.
The maximum allowed voltage on the input pins of the MAX823SEUK+ is 6V, which is the absolute maximum rating. However, the recommended operating voltage is 5V ±10% to ensure reliable operation.
The watchdog timer (WDT) on the MAX823SEUK+ can be handled by periodically resetting the WDT using the WDT reset input (WDTRST) or by disabling the WDT altogether using the WDT disable input (WDTDIS). The WDT timeout period can also be adjusted using external resistors and capacitors.
The manual reset input (MR) on the MAX823SEUK+ is used to initiate a reset sequence, which can be useful for debugging or during system initialization. The MR input can be tied to a push-button or a logic signal to initiate a reset.
MAX823SEUK+ datasheet
by Maxim Integrated Products
