Ublox SARA-R5 Series System Integration Manual

SARA-R5 series - System integration manual
UBX-19041356 - R04 Design-in Page 78 of 118
C1-Public
2.5.1.3 Guidelines for single SIM chip connection
A Surface-Mounted SIM chip (M2M UICC form factor) must be connected to the SIM card interface of
the SARA-R5 series modules as described in Figure 52.
Follow these guidelines to connect the module to a Surface-Mounted 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.
• Provide a 100 nF bypass capacitor (e.g. Murata GRM155R71C104K) at the SIM supply line close to
the relative pad of the SIM chip, to prevent digital noise.
• Provide a bypass capacitor of about 22 pF to 47 pF (e.g. Murata GCM1555C1H470JA16) on each
SIM line, to prevent RF coupling especially in case the RF antenna is placed closer than 10 - 30 cm
from the SIM lines.
• Limit capacitance and series resistance on each SIM signal to match the requirements for the SIM
interface regarding maximum allowed rise time on the lines.
SARA-R5 series
41
VSIM
39
SIM_IO
38
SIM_CLK
40
SIM_RST
SIM CHIP
SIM chip
bottom view
(contacts side)
C1
VPP (C6)
VCC (C1)
IO (C7)
CLK (C3)
RST (C2)
GND (C5)
C2 C3 C5
U1
C4
2
8
3
6
7
1
C1 C5
C2 C6
C3 C7
C4 C8
8
7
6
5
1
2
3
4
Figure 52: Application circuits for the connection to a single Surface-Mounted SIM chip, with SIM detection not implemented
Reference
Description
Part number - Manufacturer
C1, C2, C3, C4
47 pF capacitor ceramic C0G 0402 5% 50 V
GCM1555C1H470JA16 - Murata
C5
100 nF capacitor ceramic X7R 0402 10% 16 V
GCM155R71C104KA55 - Murata
U1
SIM chip (M2M UICC form factor)
Generic manufacturer
Table 34: Example of components for the connection to a single SMD SIM chip, with SIM detection not implemented
2.5.1.4 Guidelines for single SIM card connection with detection
An application circuit for the connection to a single removable SIM card placed in a SIM card holder is
described in Figure 53, where the optional SIM card detection feature is implemented.
Follow these guidelines connecting the module to a SIM connector implementing 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.

Ublox SARA-R5 Series Specifications

General

Brand	Ublox
Model	SARA-R5 Series
Category	Control Unit
Language	English