7.5.2 Reversible Software Write Protection (RSWP)

The Reversible Software Write Protection (RSWP) is enabled by sending a command to the device, similar to a normal write operation, which programs the Reversible Write-Protect register. This must be done with the WP pin low. The RSWP is programmed by sending a write command ‘01100010’ (62h) with pins A2 and A1 either grounded or not connected and the A0 pin connected to V_HV (see Figure 7-6 and Table 7-1). The RSWP or write protection can be reversed by sending a command ‘01100110’ (66h) with the A2 pin grounded or not connected, the A1 pin tied to V_CC and the A0 pin tied to V_HV (see Figure 7-7 and Table 7-1).