STCN75 datasheet(21/35 Pages) STMICROELECTRONICS

Part #	STCN75

Description	Digital temperature sensor and thermal watchdog

PDF	35 Pages

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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21 / 35 page

STCN75

Functional description

21/35

Figure 6.

Acknowledgement sequence

3.5

READ mode

In this mode the master reads the STCN75 slave after setting the slave address (see

Figure 7). Following the WRITE mode control bit (R/W=0) and the acknowledge bit, the word

address 'An' is written to the on-chip address pointer.

There are two READ modes:

●

Preset pointer locations (e.g. temperature, TOS and THYS registers), and

●

Pointer setting (the pointer has to be set for the register that is to be read)

Note:

The temperature register pointer is usually the default pointer.

These modes are shown in the READ mode typical timing diagrams (see Figure 8, Figure 9,

and Figure 10 on page 22).

Figure 7.

Slave address location

AI00601

DATA OUTPUT

BY RECEIVER

DATA OUTPUT

BY TRANSMITTER

SCL FROM

MASTER

START

CLOCK PULSE FOR

ACKNOWLEDGEMENT

MSB

LSB

AI12226

R/W

SLAVE ADDRESS

START

A2 A1 A0

STCN75 Datasheet(PDF) 21 Page - STMicroelectronics