Contents

1

Description ........................................................................3

2

Pin and signal description .........................................................4

3

I²C interface protocol ..............................................................5

3.1

Compliance and features ........................................................ 5

3.2

Register space addresses ....................................................... 5

3.3

Integration recommendations .................................................... 6

3.3.1

I²C bus access load....................................................... 6

3.3.2

NACK on TPM I²C address ................................................. 6

3.3.3

Hash locality 4 delay time to process command ................................. 6

3.3.4

I2C Linux driver.......................................................... 6

4

Electrical characteristics...........................................................8

4.1

Absolute maximum ratings....................................................... 8

4.2

DC and AC characteristics ....................................................... 8

4.3

Overshoot..................................................................... 9

4.4

Performance and power consumption characteristics ................................ 9

4.5

I²C characteristics ............................................................. 11

4.6

AC measurement conditions .................................................... 12

5

Integration guidance..............................................................13

5.1

Typical hardware implementation ................................................ 13

5.2

Power supply filtering .......................................................... 14

6

Package information..............................................................15

6.1

VFQFPN32 package information ................................................ 15

6.2

Thermal characteristics of packages ............................................. 17

7

Delivery packing..................................................................18

8

Package marking information .....................................................20

9

Ordering information .............................................................21

10

Support and information ..........................................................22

Appendix A Terms and abbreviations .................................................23

Appendix B Referenced documents ..................................................25

Revision history .......................................................................26

List of figures..........................................................................28

List of tables ..........................................................................29

ST33TPHF2XI2C

Contents

DS14167 - Rev 1

page 27/30