NXP75A(4) Device Drivers Manual NXP75A(4)

nxp75aNXP LM75A Digital temperature sensor and thermal watchdog

nxp75a* at iic? addr?

The nxp75a driver provides support for the NXP LM75A temperature sensor, with a temperature resolution of 0.125 degC and a single programable high limit. Both the temperature value and the limit are available through the envstat(8) interface.

Note, that although this chip is described as a "pin-for-pin replacement for industry standard LM75" it is not software compatible with it. The LM75 and similar chips are supported via the lmtemp(4) driver.

envsys(4), iic(4), intro(4), lmtemp(4), envstat(8)

The nxp75a driver first appeared in NetBSD 11.1.

The nxp75a driver was written by Julian Coleman <jcoleman@netbsd.org>.

February 13, 2026 NetBSD 11.99