5.35 Block Erase_64KB (BE_64KB)

The Block Erase_64KB (D8H) instruction clears all bits in the selected 64-Kbyte block to 1. A Block Erase_64KB instruction applied to a protected memory area will be ignored. Before initiating any write operation, the WREN instruction must be executed. The CE# signal must remain active-low for the duration of any command sequence. To perform a Block Erase_64KB operation, the host drives CE# low, issues the Block Erase command (D8H), transmits three address bytes, and then drives CE# high. Address bits [A_MS-A₁₆], where A_MS represents the Most Significant Address, define the target block; the remaining address bits may be driven to either V_IL or V_IH. Completion of the internally self-timed Block Erase 64 KB operation can be determined by polling the BUSY bit in the STATUS register or by waiting for the specified T_BE64KB duration. See Figure 5-28 and Figure 5-29 for the Block Erase sequences.