AN3245

Hardware

Doc ID 17747 Rev 1

5/19

1.1.2

RSTB pin recommendation

The following is a few examples of configurations at RSTB depending on applications.

●

If a reset delay is desired (recommended) upon power up, an RC delay can be

connected to the RSTB as shown below.

Figure 2.

RSTB connectivity recommendation 1

●

If external reset assertion is required through CPU/baseband, RSTB can be connected

to the GPIO. The diagram below shows the presence of a weak pull-up resistor

assuming CPU/baseband control is open drain.

Figure 3.

RSTB connectivity recommendation 2

AM08414v1

RSTB

VCC

1.65 V – 3.6 V

STMPE1801

CPU control

10 k

RSTB

VCC

CPU control

Ω