S i M 3 U 1 x x
6
Preliminary Rev. 0.8
2. Typical Connection Diagrams
This section provides typical connection diagrams for SiM3U1xx devices.
2.1. Power
Figure 2.1 shows a typical connection diagram for the power pins of the SiM3U1xx devices when the internal
regulator is in use and USB is not used.
Figure 2.1. Connection Diagram with Voltage Regulator Used and No USB
Figure 2.2 shows a typical connection diagram for the power pins of the SiM3U1xx devices when the internal
regulator and USB are not used.
Figure 2.2. Connection Diagram with Voltage Regulator Not Used and No USB
Figure 2.3 shows a typical connection diagram for the power pins of the SiM3U1xx devices when the internal
regulator used and USB is connected (bus-powered).
SiM3U1xx Device
VREGn
VREGIN
VSS
VBUS
VSSHD
1 uF and 0.1 uF bypass
capacitors required for
each power pin placed
as close to the pins as
possible.
3.3 V (out)
5 V (in)
VDD
VIO
VIOHD
SiM3U1xx Device
VREGn
VREGIN
VSS
1.8-3.6 V (in)
VBUS
VSSHD
1 uF and 0.1 uF bypass
capacitors required for
each power pin placed
as close to the pins as
possible.
VDD
VIO
VIOHD