5.36 Chip Erase (CE)

The Chip Erase instruction clears all bits in the device to 1. If any portion of the memory is protected, the Chip Erase instruction is ignored. Before initiating a Chip Erase operation, the WREN instruction must be executed.

To perform a Chip Erase operation, the host drives CE# low, issues the Chip Erase command (C7H or 60H) once in SPI mode, and then drives CE# high. Completion of the internally self-timed erase operation can be determined by polling the BUSY bit in the STATUS register or by waiting for the specified T_SCE, duration. See Figure 5-32 and Figure 5-33 for the Chip Erase sequences.