Ublox MAX-8 Series - Contents; Table of Contents

MAX-8 / MAX-M8 - Hardware Integration Manual
UBX-15030059 - R05 Page 3 of 31
Production Information
Contents
Document Information ................................................................................................................................ 2
Contents .......................................................................................................................................................... 3
1 Hardware description ........................................................................................................................... 5
1.1 Overview ........................................................................................................................................................ 5
1.2 Configuration ............................................................................................................................................... 5
1.3 Connecting power ....................................................................................................................................... 5
1.3.1 VCC_IO: IO Supply Voltage ................................................................................................................ 6
1.3.2 V_BCKP: Backup supply voltage ...................................................................................................... 6
1.3.3 VCC_RF: Output voltage RF ............................................................................................................. 7
1.3.4 V_ANT: Antenna supply (MAX-M8W) ............................................................................................. 7
1.4 Interfaces ...................................................................................................................................................... 7
1.4.1 UART ..................................................................................................................................................... 7
1.4.2 Display Data Channel (DDC) ............................................................................................................. 7
1.4.3 TX_READY ............................................................................................................................................ 7
1.5 I/O pins ........................................................................................................................................................... 7
1.5.1 RESET_N: Reset input ....................................................................................................................... 8
1.5.2 EXTINT: External interrupt ............................................................................................................... 8
1.5.3 SAFEBOOT_N ...................................................................................................................................... 8
1.5.4 TIMEPULSE.......................................................................................................................................... 8
1.5.5 LNA_EN: LNA enable .......................................................................................................................... 8
1.5.6 ANT_DET: Open Circuit Detection (MAX-M8) .............................................................................. 9
1.6 Electromagnetic interference on I/O lines ............................................................................................. 9
2 Design ..................................................................................................................................................... 10
2.1 Pin description ........................................................................................................................................... 10
2.1.1 Pin name changes............................................................................................................................. 10
2.2 Minimal design........................................................................................................................................... 11
2.3 Layout: Footprint and paste mask ........................................................................................................ 11
2.4 Antenna and Antenna supervision ........................................................................................................ 12
2.4.1 Antenna design with passive antenna ......................................................................................... 12
2.4.2 Antenna design with active antenna ............................................................................................ 13
2.4.3 Antenna design with active antenna using antenna supervisor (MAX-M8W) .................... 14
2.4.4 Status reporting ............................................................................................................................... 14
2.4.5 Power and short detection antenna supervisor (MAX-M8W) ................................................. 15
2.4.6 Power, short and open detection Antenna Supervisor (MAX-M8W) ..................................... 16
3 Migration to u-blox 8 / M8 modules .............................................................................................. 18
3.1 Migrating u-blox 7 designs to a u-blox 8 / M8 modules .................................................................... 18
3.2 Hardware migration from MAX-6 to MAX-8 / M8 ............................................................................... 18
3.3 Software migration ................................................................................................................................... 19
4 Product handling ................................................................................................................................. 20
4.1 Packaging, shipping, storage and moisture preconditioning .......................................................... 20