6.2 Read STATUS Register (RDSR)

The Read STATUS Register (RDSR) instruction provides access to the STATUS register. The ready/busy and write-enable status of the device can be determined using the RDSR instruction. Similarly, the Block Write-Protect (BP1, BP0) bits indicate the extent of memory-array protection employed. The STATUS register is read by asserting the CS pin, followed by sending a 05h opcode on the SI pin. Upon completion of the opcode, the device returns the 8‑bit STATUS register value on the SO pin.