Asynchronous/synchronous interface

A memory interface, comprising:

• a bus;
• and
• control circuitry coupled to the bus and configured to:
• control writing data to an array of memory cells in an asynchronous mode at least partially in response to a first signal received on a first interface contact;
• control writing data to the array in a synchronous mode at least partially in response to a second signal received on the first interface contact, wherein writing data to the array in the synchronous mode utilizes a signal on only one more memory interface contact than a quantity of contacts utilized in the asynchronous mode;
• and
• receive a bidirectional data strobe signal on an interface contact that is different than the first interface contact, wherein
• the interface contact that is different than the first interface contact is configured to receive the bidirectional data strobe signal in association with writing data in the synchronous mode and not in association with writing data in the asynchronous mode.

A memory device, comprising:

• an array of memory cells;
• and
• a memory interface coupled to the array of memory cells;
• wherein the memory interface is configured to:
• utilize a signal on a first contact of the memory interface as a write enable signal in an asynchronous mode and as a clock signal in a synchronous mode, wherein the clock signal has a predetermined clock frequency;
• and
• receive a bidirectional data strobe signal on a contact of the memory interface contact that is different than the first contact of the memory interface, wherein
• the memory interface contact that is different than the first contact of the memory interface is configured to receive the bidirectional data strobe signal in association with writing data in the synchronous mode and not in association with writing data in the asynchronous mode, and
• wherein the memory interface is configured to switch from the synchronous mode to the asynchronous mode at least partially in response to detecting an absence of the clock signal on the first contact.