STTS424E02BDA3F datasheet(17/51 Pages) STMICROELECTRONICS

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STTS424E02

Temperature sensor registers

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4.1

Capability register (read-only)

This 16-bit register is Read-only, and provides the TS capabilities which comply with the

minimum JEDEC 424.4 specifications (see Table 6 and Table 7 on page 18). The

STTS424E02 provides temperatures at 0.25 resolution (10-bit).

4.1.1

Alarm window trip

The device provides a comparison window with an upper temperature trip point in the Alarm

Upper Boundary register, and a lower trip point in the Alarm Lower Boundary register. When

enabled, the Event output will be triggered whenever entering or exiting (crossing above or

below) the Alarm window.

4.1.2

Critical trip

The device can be programmed in such a way that the Event output is only triggered when

the temperature exceeds the critical trip point. The Critical Temperature setting is

programmed in the Critical Temperature register. When the temperature sensor reaches the

critical temperature value in this register, the device is automatically placed in Comparator

mode, which means that the Critical Event output cannot be cleared by using software to set

the Clear Event bit.

Table 5.

Pointer register select bits (type, width, and default values)

Name

Width

(bits)

Type

(R/W)

Default state

(POR)

CAPA

Thermal sensor capabilities

C-grade

0x002D

B-grade

0x002F

CONF

Configuration

R/W

0x0000

UPPER

Alarm temperature upper boundary

R/W

0x0000

LOWER

Alarm temperature lower boundary

R/W

0x0000

CRITICAL Critical temperature

R/W

0x0000

TEMP

Temperature

0x0000

MANU

Manufacturer ID

0x104A

Device ID/revision

DA package

0x0000

DN package

0x0001

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