User's Manual l MBa7x UM 0101 l © 2020, TQ-Systems GmbH
Page 15
4.1.3
Temperature sensor
An LM75A sensor is available on the TQMa7x and a second one on the MBa7x.
Both sensors are connected to I2C1 and have different addresses, see 4.1.2.
The address of the sensor on the MBa7x can be changed by reassembling configuration resistors.
If the address is changed, care has to be taken to avoid address conflicts with other I
2
C devices.
Figure 4:
Position of temperature sensor LM75 on MBa7x
Table 11:
Electrical characteristics LM75A
Manufacturer
Resolution
Accuracy
Temperature range
Error
NXP
0.125 °C
11 bit
–25 °C to +100 °C
–55 °C to +125 °C
±2 °C
±3 °C
The temperature sensor on the MBa7x has I
2
C address
