Data Sheet

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FH3D02 Overview
Content
1
FH3D02 Overview ............................................................................................................. 4
1.1 General Description ........................................................................................................... 4
1.2 Features ............................................................................................................................. 4
1.3 Applications ....................................................................................................................... 5
1.4 Functional Block Diagram .................................................................................................. 5
2 Characteristics ................................................................................................................... 6
2.1 Absolute Maximum Ratings ............................................................................................... 6
2.2 Operating Conditions ......................................................................................................... 6
2.3 Magnetic Specifications ..................................................................................................... 7
2.4 Current Consumption ........................................................................................................ 7
3 Package and Circuit Connection ....................................................................................... 8
3.1 Footprint and Dimensions .................................................................................................. 8
3.2 Pins .................................................................................................................................... 9
3.3 Electrical Connection ......................................................................................................... 10
4 SPI Communication ........................................................................................................... 11
4.1 Protocol and Timing ........................................................................................................... 11
4.2 Read/Write Access ............................................................................................................ 12
4.2.1 Read .................................................................................................................................. 12
4.2.2 Write .................................................................................................................................. 12
4.2.3 CRC Calculation ................................................................................................................ 13
5 List of Registers ................................................................................................................. 14
5.1 Measurement Register Contents ....................................................................................... 15
5.1.1 0x000B (read/write) – Measurement Control .................................................................... 15
5.1.2 0x000E (read/write) – Measurement Start ........................................................................ 16
5.1.3 0x0107 (read only) – Status Register ................................................................................ 17
5.1.4 0x0110 (read only) – Temperature Sensor ....................................................................... 18
5.1.5 0x0111 (read only) – Bi
0
Magnetic Field ............................................................................ 18
5.1.6 0x0112 (read only) – Bi
1
Magnetic Field ............................................................................ 18
5.1.7 0x0113 (read only) – Bj
0
Magnetic Field ............................................................................ 19
5.1.8 0x0114 (read only) – Bj
1
Magnetic Field ............................................................................ 19
5.1.9 0x0120 (read only) – Magnetic Field Magnitude ............................................................... 19
5.1.10 0x0121 (read only) – Magnetic Field Angle ....................................................................... 20
5.1.11 0x0122 (read only) – Linearized Angle / Bz
1
Field (Special Function Mode) .................... 20
5.1.12 0x0124 (read only) – Bz
0
Magnetic Field (Special Function Mode) .................................. 20
5.2 Result Register Overview .................................................................................................. 21
6 Measurement Modes ......................................................................................................... 22
6.1 Single Magnetic Probe ...................................................................................................... 22
6.1.1 Application Example .......................................................................................................... 22
6.1.2 Settings .............................................................................................................................. 22
6.1.3 Output Registers ................................................................................................................ 22
6.1.4 References ........................................................................................................................ 22
6.2 Dual Magnetic Probe ......................................................................................................... 23
6.2.1 Application Example .......................................................................................................... 23
6.2.2 Settings .............................................................................................................................. 23
6.2.3 Output Registers ................................................................................................................ 23
6.2.4 References ........................................................................................................................ 23
6.3 Linear Position or Off-Axis Angle Sensor (Absolute Field Values, Magnet On-Top) ........ 24