Data Sheet
Table Of Contents
- 1 FH3D02 Overview
- 2 Characteristics
- 3 Package and Circuit Connection
- 4 SPI Communication
- 5 List of Registers
- 5.1 Measurement Register Contents
- 5.1.1 0x000B (read/write) – Measurement Control
- 5.1.2 0x000E (read/write) – Measurement Start
- 5.1.3 0x0107 (read only) – Status Register
- 5.1.4 0x0110 (read only) – Temperature Sensor
- 5.1.5 0x0111 (read only) – Bi0 Magnetic Field
- 5.1.6 0x0112 (read only) – Bi1 Magnetic Field
- 5.1.7 0x0113 (read only) – Bj0 Magnetic Field
- 5.1.8 0x0114 (read only) – Bj1 Magnetic Field
- 5.1.9 0x0120 (read only) – Magnetic Field Magnitude
- 5.1.10 0x0121 (read only) – Magnetic Field Angle
- 5.1.11 0x0122 (read only) – Linearized Angle / Bz1 Field (Special Function Mode)
- 5.1.12 0x0124 (read only) – Bz0 Magnetic Field (Special Function Mode)
- 5.2 Result Register Overview
- 5.1 Measurement Register Contents
- 6 Measurement Modes
- 6.1 Single Magnetic Probe
- 6.2 Dual Magnetic Probe
- 6.3 Linear Position or Off-Axis Angle Sensor (Absolute Field Values, Magnet On-Top)
- 6.4 Linear Position or Off-Axis Angle Sensor (Gradient Field Values, Magnet On-Top)
- 6.5 Linear Position or Off-Axis Angle Sensor (Absolute Field Values, Magnet At-The-Side)
- 6.6 Linear Position or Off-Axis Angle Sensor (Gradient Field Values, Magnet At-The-Side)
- 7 Additional Features
- 8 LZE GmbH
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www.lze-innovation.de
List of Registers
5.1.10
0x0121 (read only) – Magnetic Field Angle
The CORDIC angle of the Bi and Bj field components is available in register 0x0121. In gradient mode the
Bi and Bj differences are used as CORDIC input (see conversion formulas in the table).
Bit
Symbol
Description
D15 (MSB)
–
D0 (LSB)
angle
“angle
B
: CORDIC angle”
CORDIC angle of Bi and Bj
. 16 bit signed integer value in two’s
complement representation.
Conversion
: (normal mode):
[
°
]
=
[
]
(range extension):
[
°
]
=
[
]
Calculation:
(absolute mode):
= 2
(
,
)
(gradient mode):
= 2
(
)
,
(
)
0x0121 Bits
5.1.11
0x0122 (read only) – Linearized Angle / Bz
1
Field (Special Function Mode)
The magnetic angle can be linearized using a user defined look-up-table in the EEPROM. For further
information and the definition of the LinTab()-function please refer to chapter 7.8.
Bit
Symbol
Description
D15 (MSB)
–
D0 (LSB)
LinAngle
“angle
lin
: Linearized CORDIC angle”
16 bit signed integer value in two’s complement representation.
Calculation:
=
(
)
0x0122 Bits
(normal operation)
By enabling the special function (bits Special=0b11 and TableSelect=0b01 in 0x000B) it is possible to
read all magnetic field components during the same measurement cycle. Then Bz
1
is available in 0x0122
whereas LinAngle is not available any more.
Bit
Symbol
Description
D15 (MSB)
–
D0 (LSB)
Bz1
“Bz
1
”
Output value of magnetic field sensor. 16 bit signed integer
value in two’s complement representation.
Conversion (typical): Bz
1
[µT] = Bz
1
[LSB] * 4 [µT/LSB]
0x0122 Bits
(special function)
5.1.12
0x0124 (read only) – Bz
0
Magnetic Field (Special Function Mode)
By enabling the special function (bits Special=0b11 and TableSelect=0b01 in 0x000B) it is possible to
read all magnetic field components during the same measurement cycle. Then Bz
0
is available in register
0x0124.
Bit
Symbol
Description
D15 (MSB)
–
D0 (LSB)
Bz0
“Bz
0
”
Output value of magnetic field sensor. 16 bit signed integer
value in two’s complement
representation.
Conversion (typical): Bz
0
[µT] = Bz
0
[LSB] * 4 [µT/LSB]
0x0124 Bits
(special function)