Specifications

Table Of Contents
Cinterion
®
PLSx3 Hardware Interface Description
2.1 Application Interface
60
t PLSx3_HID_v01.003 2021-03-12
Public / Released
Page 33 of 121
2.1.6.1 Enhanced ESD Protection for SIM Interface
To optimize ESD protection for the SIM interface it is possible to add ESD diodes (eg.
NUP4114) to the SIM interface lines as shown in the example given in Figure 9. Please place
the ESD protection close to the SIM connector. It is suggested that the cload of diode be less
than 3pF.
The example was designed to meet ESD protection according ETSI EN 301 489-1/7: Contact
discharge: ± 4kV, air discharge: ± 8kV.
Figure 9: SIM interface - enhanced ESD protection
CCRST
CCVCC
CCIO
CCCLK
CCIN
GND
123
654
SIM_RST
SIM_VCC
SIM_IO
SIM_CLK
SIM_DET
Module
Keep SIM lines low capacitative