Integration Manual

ANNA-B4 series - System integration manual
UBX-21000517 - R03 Contents Page 3 of 76
C1-Public
Contents
Document information ................................................................................................................................ 2
Contents .......................................................................................................................................................... 3
1 Functional description ......................................................................................................................... 6
1.1 Overview ........................................................................................................................................................ 6
1.2 Example applications ................................................................................................................................. 6
1.3 Product features ......................................................................................................................................... 7
1.4 Block diagrams ............................................................................................................................................ 8
1.5 Product description .................................................................................................................................... 9
ANNA-B4............................................................................................................................................... 9
1.6 Hardware options ........................................................................................................................................ 9
1.7 Software options ......................................................................................................................................... 9
Open CPU............................................................................................................................................ 10
u-connectXpress software .............................................................................................................. 11
1.8 Pin configurations and functions ........................................................................................................... 11
2 System function interfaces ............................................................................................................. 12
2.1 Main supply input .......................................................................................................................................12
Digital I/O interfaces reference voltage (VCC_IO) .......................................................................12
2.2 Antenna interface ......................................................................................................................................12
ANNA-B4 integrated antenna ....................................................................................................... 13
Antenna connected to the antenna pin ....................................................................................... 13
2.3 Module reset .............................................................................................................................................. 13
2.4 Internal temperature sensor................................................................................................................... 13
2.5 Low power clock ........................................................................................................................................ 14
Internal oscillator .............................................................................................................................. 14
External crystal ................................................................................................................................ 14
External clock source, TCXO........................................................................................................... 15
Selecting clock source ..................................................................................................................... 15
2.6 Serial interfaces ........................................................................................................................................ 16
Universal asynchronous serial interface (UART) ....................................................................... 16
Serial peripheral interface (SPI) ...................................................................................................... 17
I2C interface (open CPU only) .......................................................................................................... 17
2.7 GPIO pins ...................................................................................................................................................... 17
2.8 NFC interface ............................................................................................................................................. 18
Battery protection ............................................................................................................................ 19
2.9 Debug interface ......................................................................................................................................... 19
Thermal guidelines ........................................................................................................................... 19
2.10 Reserved pins (RSVD) .............................................................................................................................. 19
2.11 ANNA-B1 to ANNA-B4 migration ........................................................................................................... 20
3 Design-in ................................................................................................................................................. 22
3.1 Overview ...................................................................................................................................................... 22