Contents
Page 3
16.2 CTRL-AP - Control Access Port......................................................................................... 61
16.3 Debug interface mode.........................................................................................................63
16.4 Real-time debug..................................................................................................................63
17 Power and clock management...........................................................................65
17.1 Current consumption scenarios.......................................................................................... 65
18 POWER — Power supply....................................................................................67
18.1 Regulators........................................................................................................................... 67
18.2 System OFF mode..............................................................................................................68
18.3 System ON mode............................................................................................................... 68
18.4 Power supply supervisor.....................................................................................................69
18.5 RAM sections...................................................................................................................... 70
18.6 Reset................................................................................................................................... 70
18.7 Retained registers............................................................................................................... 71
18.8 Reset behavior.................................................................................................................... 71
18.9 Registers............................................................................................................................. 72
18.10 Electrical specification.......................................................................................................86
19 CLOCK — Clock control.....................................................................................87
19.1 HFCLK clock controller....................................................................................................... 87
19.2 LFCLK clock controller........................................................................................................89
19.3 Registers............................................................................................................................. 91
19.4 Electrical specification.........................................................................................................94
20 GPIO — General purpose input/output............................................................. 96
20.1 Pin configuration................................................................................................................. 96
20.2 GPIO located near the RADIO........................................................................................... 98
20.3 Registers............................................................................................................................. 98
20.4 Electrical specification.......................................................................................................139
21 GPIOTE — GPIO tasks and events..................................................................142
21.1 Pin events and tasks........................................................................................................ 142
21.2 Port event..........................................................................................................................143
21.3 Tasks and events pin configuration.................................................................................. 143
21.4 Registers........................................................................................................................... 143
21.5 Electrical specification.......................................................................................................152
22 PPI — Programmable peripheral interconnect...............................................154
22.1 Pre-programmed channels................................................................................................155
22.2 Registers........................................................................................................................... 155
23 RADIO — 2.4 GHz Radio.................................................................................. 191
23.1 EasyDMA...........................................................................................................................191
23.2 Packet configuration..........................................................................................................192
23.3 Maximum packet length.................................................................................................... 193
23.4 Address configuration........................................................................................................193
23.5 Data whitening.................................................................................................................. 193
23.6 CRC...................................................................................................................................194
23.7 Radio states...................................................................................................................... 195
23.8 Transmit sequence............................................................................................................195
23.9 Receive sequence.............................................................................................................197
23.10 Received Signal Strength Indicator (RSSI).....................................................................198
23.11 Interframe spacing...........................................................................................................198
23.12 Device address match.................................................................................................... 199
23.13 Bit counter....................................................................................................................... 199
23.14 Registers......................................................................................................................... 200
23.15 Electrical specification.....................................................................................................216
24 TIMER — Timer/counter....................................................................................220
24.1 Capture..............................................................................................................................221
24.2 Compare............................................................................................................................221
24.3 Task delays....................................................................................................................... 221
24.4 Task priority.......................................................................................................................221
24.5 Registers........................................................................................................................... 221
