STTS2002 datasheet(18/52 Pages) STMICROELECTRONICS

18 / 52 page

Temperature sensor registers

STTS2002

18/52

Doc ID 15389 Rev 5

Table 7.

Capability register bit definitions

Bit

Definition

Basic capability

– 0 = Alarm and critical trips turned OFF.

– 1 = Alarm and critical trips turned ON.

Accuracy

– 0 = Accuracy ±2 °C over the active range and ±3 °C over the monitoring range

(C-grade).

– 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 =

STTS2002 supports a voltage up to 10 volts on the A0 pin - (default)

TMOUT - bus timeout support (for temperature sensor only)

–0 = ttimeout is supported in the range of 10 to 60 ms

–1 = Default for STTS2002-SMBus compatible 25 ms - 35 ms

Note: Timeout is not required for EEPROM component

EVSD - EVENT behavior upon shutdown

– 0 = Default for STTS2002. The EVENT output freezes in its current state when

entering shutdown. Upon entering shutdown, the EVENT output remains in the

previous state until the next thermal data conversion or possibly sooner if EVENT is

programmed for comparator mode.

– 1 = EVENT 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.

15:8

Reserved

These values must be set to '0'.

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