Nordic 3 - Page 3

Contents
Doc. ID 4374_139 v1.1
Page 3
5.3.10 nRF52 DK interface.............................................................................................................................39
5.3.11 Current measurement....................................................................................................................... 41
5.3.12 I
2
C bus connector............................................................................................................................... 42
5.3.13 Schematics, bill of materials, PCB layout files, production files......................................... 42
Chapter6:Hardware description: Smart Remote 3 nRF52 product
example...................................................................................................... 43
6.1 Hardware figures: SR 3 product example......................................................................................................43
6.2 Block diagram.......................................................................................................................................................... 44
6.3 Design description................................................................................................................................................. 45
6.3.1 I/O usage...................................................................................................................................................45
6.3.2 Keypad matrix.........................................................................................................................................46
6.3.3 Low-power accelerometer circuit................................................................................................... 47
6.3.4 Motion tracking device....................................................................................................................... 48
6.3.5 Power supply...........................................................................................................................................49
6.3.6 Programming interface....................................................................................................................... 50
6.3.7 Digital microphones............................................................................................................................. 51
6.3.8 Matching network.................................................................................................................................52
6.3.9 Antenna.....................................................................................................................................................52
6.3.10 NFC........................................................................................................................................................... 52
6.3.11 Infrared emitter/receiver.................................................................................................................. 53
6.3.12 Buzzer...................................................................................................................................................... 53
6.3.13 Schematics, bill of materials, PCB layout files, production files......................................... 54
6.4 Power consumption performance................................................................................................................... 54
Chapter7:Firmware update of Smart Remote 3........................................ 56
7.1 Connect product example to nRF52 DK........................................................................................................ 56
7.2 Selecting a board to program........................................................................................................................... 57
7.3 Identifying the nRF52 chip and chip content..............................................................................................57
7.4 Erase all.......................................................................................................................................................................57
7.5 Programming with Nordic firmware............................................................................................................... 57
Legal notices....................................................................................................................... 59