Set peripheral bits to 1 to mark as secure access only
| KEYSCAN | KEYSCAN Secure Access |
| DMEM | DMEM Secure Access |
| RADIOAES | RADIOAES Secure Access |
| SMU | SMU Secure Access |
| SMUCFGNS | SMUCFGNS Secure Access |
| LETIMER0 | LETIMER0 Secure Access |
| IADC0 | IADC0 Secure Access |
| ACMP0 | ACMP0 Secure Access |
| ACMP1 | ACMP1 Secure Access |
| AMUXCP0 | AMUXCP0 Secure Access |
| VDAC0 | VDAC0 Secure Access |
| VDAC1 | VDAC1 Secure Access |
| PCNT | PCNT Secure Access |
| HFRCO1 | HFRCO1 Secure Access |
| HFXO0 | HFXO0 Secure Access |
| I2C0 | I2C0 Secure Access |
| WDOG0 | WDOG0 Secure Access |
| WDOG1 | WDOG1 Secure Access |
| EUSART0 | EUSART0 Secure Access |
| SEMAILBOX | SEMAILBOX Secure Access |
| AHBRADIO | AHBRADIO Secure Access |