8.4.2 Checking the Reversible Write-Protect Register (RSWP) Status
To determine the status of the Reversible Write-Protect register, send a command to the device similar to the one used for programming the register, but set the R/W bit to one. If the device returns an Acknowledge, the Reversible Write-Protect register has not been programmed. Otherwise, it has been programmed and the first half of the array is write protected, but remains reversible.
| Command | Pin | Preamble | R/W | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| A2 | A1 | A0 | Bit 7 | Bit 6 | Bit 5 | Bit 4 | Bit 3 | Bit 2 | Bit 1 | Bit 0 | |
| Read PSWP | A2 | A1 | A0 | 0 | 1 | 1 | 0 | A2 | A1 | A0 | 1 |
| Read RSWP | 0 | 0 | VHV | 0 | 1 | 1 | 0 | 0 | 0 | 1 | 1 |