SLEEPDEEP=VALUE_0, SEVONPEND=VALUE_0, SLEEPONEXIT=VALUE_0
System Control Register
| SLEEPONEXIT | Sleep on exit 0 (VALUE_0): O not sleep when returning to Thread mode 1 (VALUE_1): Enter sleep, or deep sleep, on return from an ISR  |  
| SLEEPDEEP | Sleep deep 0 (VALUE_0): Sleep 1 (VALUE_1): Deep sleep  |  
| SLEEPDEEPS | Sleep deep secure  |  
| SEVONPEND | Send Event on Pending bit 0 (VALUE_0): Only enabled interrupts or events can wakeup the processor, disabled interrupts are excluded 1 (VALUE_1): Enabled events and all interrupts, including disabled interrupts, can wakeup the processor  |