SMC_PMPROT field descriptions (continued)Field Description0 VLPR, VLPW, and VLPS are not allowed.1 VLPR, VLPW, and VLPS are allowed.4ReservedThis field is reserved.This read-only field is reserved and always has the value 0.3ALLSAllow Low-Leakage Stop ModeProvided the appropriate control bits are set up in PMCTRL, this write-once field allows the MCU to enterany low-leakage stop mode (LLS).0 LLS is not allowed1 LLS is allowed2ReservedThis field is reserved.This read-only field is reserved and always has the value 0.1AVLLSAllow Very-Low-Leakage Stop ModeProvided the appropriate control bits are set up in PMCTRL, this write once bit allows the MCU to enterany very-low-leakage stop mode (VLLSx).0 Any VLLSx mode is not allowed1 Any VLLSx mode is allowed0ReservedThis field is reserved.This read-only field is reserved and always has the value 0.14.4.2 Power Mode Control register (SMC_PMCTRL)The PMCTRL register controls entry into low-power Run and Stop modes, provided thatthe selected power mode is allowed via an appropriate setting of the protection(PMPROT) register.NOTEThis register is reset on Chip POR not VLLS and by reset typesthat trigger Chip POR not VLLS. It is unaffected by reset typesthat do not trigger Chip POR not VLLS. See the Reset sectiondetails for more information.Address: 4007_E000h base + 1h offset = 4007_E001hBit 7 6 5 4 3 2 1 0Read Reserved RUNM 0 STOPA STOPMWriteReset 0 0 0 0 0 0 0 0Chapter 14 System Mode Controller (SMC)KL27 Sub-Family Reference Manual , Rev. 5, 01/2016Freescale Semiconductor, Inc. 227
