4

Integration guidance

4.1

Typical hardware implementation

The Physical Presence (PP) pin should be connected if platform implementation (at boot level) uses a hardware

physical presence function.

The figure below shows the hardware implementation in the case of the TSSOP28 package. The same

implementation is also valid for the TSSOP28 and QFN32 packages.

VPS

24

MOSI

23

SPI_CS

22

SPI_CLK

21

SPI_PIRQ

20

NC

19

NC

18

NC

17

SPI_RST

16

NC

15

NC

14

NC

13

GND

4

NC

5

NC

11

NC

12

NC

10

NC

9

NC

8

PP

7

GPI

6

NC

3

NC

2

NC

1

NC

25

MISO

26

NC

27

NC

28

VPS

100 nF

10 µF

GND

MISO

MOSI

SPI_CS

SPI_CLK

SPI_PIRQ

SPI_RST

PP (opt)

GPI (opt)

10 kΩ

(optional)

VPS

ST33TPHF2ESPI

Integration guidance

DB2716 - Rev 4

page 7/26