TLE4998C3 Datasheet, PDF (35/44 Pages) Infineon Technologies AG – Programmable Linear Hall Sensor

TLE4998C
SPC Output Definition
Line idle
OUT
Master
Trigger
Pulse
Sync
frame
Status
Nibble
Data
Data
Nibble 1 Nibble 2
Data
Nibble 3
Data
Nibble 3
Data
Nibble 4*
Data
Data
Nibble 5* Nibble 6*
CRC
Nibble
End Pulse
Available for
next sample
* Data Nibbles 4 to 6 are optional (programmable )
Figure 13 SPC Frame
The CRC checksum includes the status nibble and the data nibbles and can be used to
check the validity of the decoded data. The sensor is available for the next sample 90µs
after the falling edge of the end pulse. The sampling time (when values are taken for
temperature compensation) is always defined as the beginning of the synchronization
period. During this period, the resulting data is always calculated from scratch.
The number of transmitted SPC nibbles is programmable to customize the amount of
information sent by the sensor. The frame contains a 16bit Hall value and an 8bit
temperature value in the full configuration.
Table 20 Frame Register
Parameter
Symbol Limit Values Unit Notes
min. max.
Frame register
F
2
bit
Table 21 Frame Selection
Frame Type
16bit Hall, 8bit temperature
16bit Hall
12bit Hall, 8bit temperature
12bit Hall
Parameter F
0
1
2
3
Data Nibbles
6 nibbles
4 nibbles
5 nibbles
3 nibbles
The temperature is coded as an 8bit value. The value is transferred in unsigned integer
format and corresponds to the range between -55°C and +200°C, so a transferred value
Data Sheet
35
Rev 1.0, 2008-12