Memory timing terminology: The time from the beginning of a read cycle until the data output becomes valid at the device pins is commonly called the access time. Evaluate the statement: "This interval is called propagation delay."

Introduction / Context:
Precise timing terms are crucial when reading memory datasheets and designing bus interfaces. Two commonly encountered terms are access time and propagation delay. Although related, they describe different measurements and contexts.

Given Data / Assumptions:

• We consider asynchronous memories for clarity; synchronous memories add clocked timing parameters.
• Read cycle begins with address (and CS/OE) assertion.
• The device outputs valid data after some finite time.

Concept / Approach:
Access time (t_ACC conceptually) is the interval from a defined starting condition—often address valid with chip selected—to the time when the data at the output pins is guaranteed valid. Propagation delay is a more generic term for the internal delay from an input transition to a corresponding output transition for a specific signal path. Datasheets use “access time” as the headline specification for memory speed in read operations.

Step-by-Step Solution:
1) Establish start of read cycle: address asserted, CS/OE active.2) Measure until data lines achieve and hold valid logic levels.3) This interval is the access time parameter.4) Therefore, calling it “propagation delay” is imprecise and, in datasheet nomenclature, incorrect.

Verification / Alternative check:
Open any asynchronous SRAM/ROM datasheet: the key timing table lists tAA (address to data valid) or tCE/tOE paths under “Access Time.”

Why Other Options Are Wrong:
“Correct” conflicts with standard naming. The qualifiers about sync SRAM or OE polarity do not change the definition of the parameter describing read latency.

Common Pitfalls:
Using “prop delay” loosely for any delay; ignoring that multiple paths (address, CS, OE) each have their own access-related timing.

Final Answer:
Incorrect