24.5.1 Flash Memory Construction

Flash memory is divided into pages. A page is the smallest unit of memory that can be erased at one time. Each page of memory is segmented into four rows. A row is the largest unit of memory that can be programmed at one time. A row consists of 64 Quad (128-bit) Word. Each Quad Word consists of a four instruction (32-bit) Word. Flash memory can be programmed in rows, Quad Word (128-bit) or Single Word (32-bit) units.

Figure 24-2. Flash Construction