DEVICES AND SYSTEMS INCLUDING ENABLING CIRCUITS

摘要

Examples of devices and systems including enabling circuits are described. Two voltage supplies may be used to operate different portions of the devices, including peripheral circuits and I/O circuits. When the voltage supply to the peripheral circuits of one or more devices is disabled, the I/O circuits of that device may be disabled. In some examples, power may advantageously be saved in part by eliminating or reducing a DC current path through the I/O circuits.

主权项

1. An apparatus, comprising:
a peripheral circuit coupled to a memory array and configured to receive a first supply voltage, wherein the peripheral circuit is configured to provide a first signal responsive to a shutdown command from a controller, wherein the peripheral circuit is further configured to provide a second signal that is indicative of the first supply voltage exceeding a threshold; an input/output (I/O) circuit configured to receive a second supply voltage, different from the first supply voltage, wherein the input/output circuit is further configured to be disabled based on a value of a control signal; and an enabling circuit coupled to the I/O circuit and the peripheral circuit, the enabling circuit configured to provide the control signal having a first logical value responsive to the first signal, wherein the enabling circuit is further configured to provide the control signal having a second logical value responsive to the second signal.