STTS2004 datasheet(19/58 Pages) STMICROELECTRONICS

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STTS2004

Temperature sensor registers

Table 8. Capability register bit definitions

Bit

Definition

Basic capability

– 0 = Alarm and critical trips turned OFF.

– 1 = Alarm and critical trips turned ON.

Accuracy

– 1 = High accuracy ±1 °C over the active range and ±2 °C over the monitoring range

(B-grade) (default).

Range width

– 0 = Values lower than 0 °C will be clamped and represented as binary value '0'.

– 1 = Temperatures below 0 °C can be read and the Sign bit will be set accordingly.

4:3

Temperature resolution

– 00 = 9 bit, 0.5 °C/LSB

– 01 = 10 bit, 0.25 °C/LSB - default resolution

– 10 = 11 bit, 0.125 °C/LSB

– 11 = 12 bit, 0.0625 °C/LSB

(VHV) high voltage support for A0 (pin 1)

– 1 =

STTS2004 supports a voltage up to 10 volts on the A0 pin - (default)

TMOUT - bus timeout support

– 1 = Default for STTS2004-SMBus compatible 25 ms - 35 ms

EVSD - EVENT behavior upon shutdown (default)

– 1 = The EVENT pin output is deasserted (not driven) when entering shutdown, and remains

deasserted upon exit from shutdown until the next thermal sample is taken, or possibly

sooner if EVENT is programmed for comparator mode. In interrupt mode, EVENT may or

may not be asserted when exiting shutdown if a pending interrupt has not been cleared.

15:8

Reserved

These values must be set to '0'.

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