Integration Manual

TSD-19090601 - R15 Contents Page 90 of 143
 Provide a very low capacitance (i.e. less than 10 pF) ESD protection (e.g. Tyco PESD0402-140) on each
externally accessible SIM line, close to each relative pad of the SIM connector. The ESD sensitivity rating
of the SIM interface pins is 1 kV (HBM). So that, according to EMC/ESD requirements of the custom
application, a higher protection level can be required if the lines are externally accessible on the
application device.
 Limit the capacitance and series resistance on each SIM signal to match the SIM requirements (23 ns is
the maximum allowed rise time on the clock line, 1 µs is the maximum allowed rise time on the data
and reset lines).
TOBY-L3 series
VSIMx
SIMx_IO
SIMx_CLK
SIMx_RST
SIM CARD
HOLDER
C
5
C
6
C
7
C
1
C
2
C
3
SIM Card
Bottom View
(contacts side)
C1
VPP (C6)
VCC (C1)
IO (C7)
CLK (C3)
RST (C2)
GND (C5)
C2 C3 C5
J1
C4
D1 D2 D3 D4
C
8
C
4
Figure 24: Application circuits for the connection to a single removable SIM card, with SIM detection not implemented
Reference
Description
Part Number - Manufacturer
C1, C2, C3, C4
47 pF Capacitor Ceramic C0G 0402 5% 50 V
GRM1555C1H470JA01 - Murata
C5
100 nF Capacitor Ceramic X7R 0402 10% 16 V
GRM155R71C104KA01 - Murata
D1, D2, D3, D4
Very Low Capacitance ESD Protection
PESD0402-140 - Tyco Electronics
J1
SIM Card Holder, 6 p, without card presence switch
Various manufacturers, as C707 10M006 136 2 - Amphenol
Table 30: Example of components for the connection to a single removable SIM card, with SIM detection not implemented
Guidelines for single SIM chip connection
A solderable SIM chip (M2M UICC Form Factor) must be connected the SIM interface of the TOBY-L3 series
modules as shown in Figure 25.
Follow these guidelines to connect the module to a solderable SIM chip without SIM presence detection:
 Connect the UICC / SIM contact C1 (VCC) to the VSIM pin of the module.
 Connect the UICC / SIM contact C7 (I/O) to the SIM_IO pin of the module.
 Connect the UICC / SIM contact C3 (CLK) to the SIM_CLK pin of the module.
 Connect the UICC / SIM contact C2 (RST) to the SIM_RST pin of the module.
 Connect the UICC / SIM contact C5 (GND) to ground.