Difficulty: Easy
Correct Answer: Command code (interpreted by the internal command/state machine)
Explanation:
Introduction / Context:
Flash memories execute complex internal algorithms—such as program, erase, and verify—coordinated by an internal controller or command/state machine. The host (processor) communicates intent by issuing specific command codes via the memory’s interface.
Given Data / Assumptions:
Concept / Approach:
The host writes a command code (or sequence) to special addresses, which the internal command/state machine interprets to launch the appropriate operation. The floating-gate MOSFET is the storage element but does not “manage” operations; the I/O pins are a conduit only. Program-verify is a phase within programming, not the manager of all functions.
Step-by-Step Solution:
Host issues command code(s) over the bus.Internal command/state machine decodes the command and starts program/erase/read flow.Device performs verify loops, status reporting, and timing autonomously.Therefore, management originates from the interpreted command code inside the device.
Verification / Alternative check:
Manufacturer datasheets (e.g., for NOR Flash) document command tables and status registers that are parsed by an internal state machine governing all algorithms.
Why Other Options Are Wrong:
I/O pins: physical interface only; do not interpret or manage.Floating-gate MOSFET: storage device; not a controller.Program verify code: a sub-step outcome, not the manager.Row decoder: selects rows; does not orchestrate high-level operations.
Common Pitfalls:
Confusing storage physics with control logic. The command/state machine is the “brains,” while arrays, decoders, and sense amps perform lower-level functions.
Final Answer:
Command code (interpreted by the internal command/state machine)
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