JAJSAR0B March 2007 – October 2017 LM95214
PRODUCTION DATA.
The LM95214 TCRIT1, TCRIT2, and TCRIT3 active low outputs are triggered when any unmasked channel exceeds its corresponding programmable limit and can be used to shutdown the system, to turn on the system fans or as a microcontroller interrupt function. The current status of the TCRIT1, TCRIT2, and TCRIT3 pins can be read back from the status registers through the SMBus interface. Two of the remote channels have two separate limits each that control the TCRIT1 and TCRIT2 pins. The remaining two channels and the local channel each have one limit to control both the TCRIT1 and TCRIT2 pins. The TCRIT3 pin shares the limits of the TCRIT2 pin but allows for different masking options. All limits have a shared programmable hysteresis register.
Diode fault detection circuitry in the LM95214 can detect the absence or fault state of a remote diode: whether D+ is shorted to VDD, D– or ground, or whether D+ is floating.
Remote Diode 1 and 2 temperature channels have programmable digital filters while the other two remote temperature channels utilize a fault-queue to avoid false triggering the TCRIT pins.
The LM95214 has a three-level address pin to connect up to 3 devices to the same SMBus master. LM95214 also has programmable conversion rate register as well as a shutdown mode for power savings. One round of conversions can be triggered in shutdown mode by writing to the one-shot register through the SMBus interface. LM95214 can be programmed to turn off unused channels for more power savings.
The LM95214 register set has an 8-bit data structure and includes: