Section number Title Page
6.2.5 Debug resets.................................................................................................................................................133
6.3 Boot...............................................................................................................................................................................134
6.3.1 Boot sources.................................................................................................................................................134
6.3.2 FOPT boot options.......................................................................................................................................134
6.3.3 Boot sequence..............................................................................................................................................135
Chapter 7
Power Management
7.1 Introduction...................................................................................................................................................................137
7.2 Clocking Modes............................................................................................................................................................137
7.2.1 Partial Stop...................................................................................................................................................137
7.2.2 DMA Wakeup..............................................................................................................................................138
7.2.3 Compute Operation......................................................................................................................................139
7.2.4 Peripheral Doze............................................................................................................................................140
7.2.5 Clock Gating................................................................................................................................................141
7.3 Power modes.................................................................................................................................................................141
7.4 Entering and exiting power modes...............................................................................................................................143
7.5 Module Operation in Low Power Modes......................................................................................................................143
Chapter 8
Security
8.1 Introduction...................................................................................................................................................................149
8.2 Flash Security...............................................................................................................................................................149
8.3 Security Interactions with other Modules.....................................................................................................................149
8.3.1 Security Interactions with Debug.................................................................................................................150
Chapter 9
Debug
9.1 Introduction...................................................................................................................................................................151
9.2 Debug Port Pin Descriptions.........................................................................................................................................151
9.3 SWD status and control registers..................................................................................................................................152
9.3.1 MDM-AP Control Register..........................................................................................................................153
9.3.2 MDM-AP Status Register............................................................................................................................154
KL25 Sub-Family Reference Manual, Rev. 3, September 2012
Freescale Semiconductor, Inc. 7