78K0/Fx2 – CAN it!
3.12 Temperature sensor
For temperature measurement and primarily as an application example a silicon temperature sensor
KTY13-5 is connected to the ANI2 analogue input, equal to port P82 of 78K0/FF2 device.
The temperature sensor has a resistor range of R
25 min
= 1950 • and R
25 max
= 1990 • at 25 degrees
centigrade, with I
OP
= 1mA. The distribution of the temperature factor k
T
is shown in the table below:
1) Normalising point
Table 11: Distribution of temperature factor k
T
The sensor resistance can be calculated as following:
R
T
=
k
T
* R
25
=
•(T
A
)
19
