EPCQ-A Serial Configuration Device Datasheet

ID 683818
Date 10/01/2019
Document Table of Contents

1.9.11. Erase Bulk Operation (C7h)

This operation sets all the memory bits to 1 or 0xFF. Similar to the write bytes operation, you must execute the write enable operation before the erase bulk operation.

You can implement the erase bulk operation by driving the nCS signal low and then shifting in the erase bulk operation code on the DATA0 pin. The nCS signal must be driven high after the eighth bit of the erase bulk operation code has been latched in.

Figure 16. Erase Bulk Operation Timing Diagram

The device initiates a self-timed erase bulk cycle immediately after the nCS signal is driven high. For details about the self-timed erase bulk cycle time, refer to tEB in the related information below.

You must account for this delay before accessing the memory contents. Alternatively, you can check the write in progress bit in the status register by executing the read status operation while the self-timed erase cycle is in progress. The write in progress bit is set to 1 during the self-timed erase cycle and 0 when it is complete. The write enable latch bit in the status register is reset to 0 before the erase cycle is complete.