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71M6545/71M6545H Data Sheet
6.8
6.8.1
71M6545/H Pin Descriptions
71M6545/H Power and Ground Pins
Table 98 lists the power and ground pins. Pin types: P = Power, O = Output.
The circuit number denotes the equivalent circuit, as specified under 6.8.4 .
Table 98: 71M6545/H Power and Ground Pins
Pin No.
47, 50
16, 38
55
45
5
4
46
Name
GNDA
GNDD
V3P3A
V3P3SYS
V3P3D
VDD
VBAT_RTC
Type
P
P
P
P
O
O
P
Circuit
–
–
–
–
13
10
12
Description
Analog ground: This pin should be connected directly to the
ground plane.
Digital ground: This pin is connected directly to the ground
plane.
Analog power supply: A 3.3 V power supply is connected to
this pin. V3P3A must be the same voltage as V3P3SYS.
System 3.3 V supply. This pin is connected to a 3.3 V power
supply.
Auxiliary voltage output of the chip. In mission mode, this pin
is connected to V3P3SYS by the internal selection switch. A
bypass capacitor to ground must not exceed 0.1 μF.
The output of the 2.5V regulator. This pin is powered in MSN
mode. A 0.1 μF bypass capacitor to ground must be
connected to this pin.
RTC and oscillator power supply. A battery may be optionally
connected between VBAT_RTC and GNDD. If no battery is
used, connect VBAT_RTC to V3P3SYS.
v2
127
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