Specifications

Table Of Contents
Cinterion
®
TX62-W/TX82-W Hardware Interface Description
2.1 Application Interface
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t TX62-W_TX62-W-x_TX82-W-x_HID_v01.200d 2022-09-08
Public / Preliminary
Page 40 of 170
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 (e.g.,
NUP4114) to the SIM interface lines as shown in the example given in Figure 15.
The example was designed to meet ESD protection according ETSI EN 301 489-1/7: Contact
discharge: ± 4kV, air discharge: ± 8kV.
Figure 15: SIM interface - enhanced ESD protection
The capacitors shown in Figure 14 must be placed close to the SIM Connector.
1
2
3
6
5
4
SIM_RST
Module
GND
5-line transient voltage
Suppressor array, e.g.,
NUP4114 or ESDALCL6-4P6A
series
CCRST
CCCLK
CCIO
CCIN
CCVCC
SIM_VCC
SIM_IO
SIM_CLK
SIM_DET
SIM_GND
22 0nF
1nF
Keep SIM lines low capacitative.