Concurrent Read Write Operations in Serial Flash Memory

The memory array is divided into multiple independently controllable planes (first array plane and second array plane). The controller can simultaneously execute write operations on one plane and read operations on another plane without interference, as each plane operates independently with separate bit lines and word lines. This segmentation resolves the contradiction by enabling concurrent operations while maintaining data integrity through physical isolation of operation zones.

The memory controller acts as an intermediary that manages and coordinates operations across multiple planes. It detects when read and write commands are received simultaneously, suspends write operations during read operations on different planes, and resumes write operations after read operations complete. This intermediary control mechanism enables safe concurrent operations while preventing data corruption through proper timing and coordination.

By dividing the memory array into multiple planes that can operate independently, the system allows write operations on one plane to continue while read operations occur on another plane. This eliminates the need to suspend write operations entirely, reducing latency while maintaining data integrity through plane isolation. The segmentation enables true parallel operation rather than sequential suspension.

The system maintains continuous operation by allowing write operations to proceed uninterrupted on planes not currently being read. Instead of suspending all write operations during reads, the controller enables concurrent writes on available planes, ensuring continuous useful action across the memory system while still preventing data corruption through proper plane selection and control.

The memory array is segmented into multiple planes with independent bit lines and word lines for each plane. This physical segmentation enables concurrent operations on different planes while using shared common bit lines and control circuitry. The segmentation provides a balanced architecture that improves throughput through parallel operations while controlling complexity by reusing shared resources across planes.

The memory controller is designed with universal functionality to handle both read and write operations across multiple planes using the same control logic and data I/O circuitry. The same controller infrastructure manages operations on any plane, eliminating the need for separate dedicated controllers for each plane. This multi-functionality improves throughput through parallel plane operations while controlling complexity by reusing control resources.