STTS752E datasheet(16/38 Pages) STMICROELECTRONICS

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Functional description

STTS75

16/38

Functional description

The STTS75 registers have unique pointer designations which are defined in Table 6 on

page 16. Whenever any READ/WRITE operation to the STTS75 register is desired, the user

must “point” to the device register to be accessed.

All of these user-accessible registers can be accessed via the digital serial interface at

anytime (see Serial interface on page 20), and they include:

●

Command Register/Address Pointer Register

●

Configuration Register

●

Temperature Register

●

Over-Limit Signal Temperature Register (TOS)

●

Hysteresis Temperature Register (THYS)

3.1

Registers and register set formats

3.1.1

Command/pointer register

The Most Significant Bits (MSBs) of the Command Register must always be zero. Writing a

'1' into any of these bits will cause the current operation to be terminated (see Table 5).

The Command Register retains pointer information between operations. Therefore, this

Table 5.

Command/pointer register format

MSB

LSB

Bit7

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0

000

Pointer

Table 6.

Pointer

Value

(H)

Name

Description

Width

(Bits)

Type

(R/W)

Power-on

default

Comments

0000

TEMP

Temperature

Read

only

N/A

To store Measured

Temperature Data

CONF

Configuration

8R/W

0210

THYS

Hysteresis

R/W

4800

Default = 75°C

0311

TOS

Over-

temperature

Shutdown

R/W

5000

Set point for Over-

temperature

Shutdown (TOS) limit

default = 80°C

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