Siemens TC35 Terminal User Manual

20
Interface description
Purpose of the connectors/connections
Use and operation
A SIM card holder from Molex with a SIM_IN
contact is used. Only when the card holder
is inserted is the switched closed.
The card can only be replaced when the
GSM engine is in the POWER DOWN state.
Signal
name
PIN I/O Description of the
GSM module
connectors
Parameters
CCIN 24 I Input for detection
of the SIM card;
high active
R
i
=100kΩ to GND
U
iLmax
=0.4V
@I=0.1mA
U
iHmin
=1.95V
U
iHmax
=3.3V
CCRST 25 O Restart R
0
=220Ω
CCIO 26 I/O Date input/output Input: R
i
≥ 1MΩ
Output: R
0
=220Ω
CCCLK 27 O Clock R
0
=220Ω
CCVCC 28 O Supply voltage CCVCC
min
=2.84V
CCVCC
max
=2.96V
I
max
=50mA
CCGND 29 X

Siemens TC35 Terminal Specifications

General

Brand	Siemens
Model	TC35 Terminal
Category	Modem
Language	English