Arduino library for the LM75A temperature sensor by NXP and Texas Instruments.
Written by Jonny Bergdahl for M2M Solutions AB.
Copyright (c) 2016-2017, M2M Solutions AB. All rights reserved.
This library is open source. It is released under the MIT License. Please see the included LICENSE.txt file for more information.
LM75A is a temperature sensor communicating over the I2C protocol.
The NXP version of LM75A has 11 significant bits of the temperature, which gives a resolution of 0.125 °C. The standard version only uses 9 bits, which gives a resuolution of 0.5 °C.
I2C address span is 0x48 - 0x4F, and is set with pins A0/A1/A2.
Power up mode:
- Comparator mode
- Tos = 80 °C
- Thyst = 75 °C
- OS active low
Pin 3 is the OS (overtemperature shutdown). It can be used to to trigger a pin interrupt. Set the functional mode, Tos and Thyst if you want to use this.
LM75A data sheets.