Apparatuses, systems, and methods for system on chip replacement mode

A method comprising:

• receiving signals on a plurality of input pins of a memory device, wherein the signals are represented by voltages within a voltage range;
• entering a replacement mode of the memory device responsive to a replacement mode entry signal, wherein the replacement mode entry signal is represented by a voltage on one of the plurality of input pins crossing a reference voltage which is outside the voltage range;
• and
• ignoring the signals on the plurality of input pins while the memory device is in the replacement mode.

A system comprising:

• a memory device configured to store information;
• a first system on chip (SoC) configured to act as a controller of the memory device;
• a second SoC;
• and
• a command address (CA) bus coupling the first SoC and the second SoC to the memory device,
• wherein the first SoC is configured to provide a replacement mode entry signal along the CA bus to put the memory device in a replacement mode,
• wherein the memory device is configured to preserve the information in the memory device while in the replacement mode, and
• wherein the second SoC is configured to take over as the controller of the memory device.