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71M6541D/F/G Datasheet(PDF) 159 Page - Maxim Integrated Products

Part # 71M6541D/F/G
Description  Energy Meter ICs
PDF  166 Pages
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Manufacturer  MAXIM [Maxim Integrated Products]
Direct Link  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

71M6541D/F/G Datasheet(HTML) 159 Page - Maxim Integrated Products

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71M6541D/F/G and 71M6542F/G Data Sheet
Rev 5
159
6.9
Pin Descriptions
6.9.1
Power and Ground Pins
Pin types: P = Power, O = Output, I = Input, I/O = Input/Output.
The circuit number denotes the equivalent circuit, as specified under 6.9.4 I/O Equivalent Circuits.
.
Table 119: Power and Ground Pins
Pin
(64 pin)
Pin
(100-pin)
Name
Type
Circuit
Description
50
72, 80
GNDA
P
–
Analog ground: This pin should be connected directly to
the ground plane.
42
62
GNDD
P
–
Digital ground: This pin should be connected directly to
the ground plane.
53
85
V3P3A
P
–
Analog power supply: A 3.3 V power supply should be
connected to this pin. V3P3A must be the same
voltage as V3P3SYS.
45
69
V3P3SYS
P
–
System 3.3 V supply. This pin should be connected to a
3.3 V power supply.
41
61
V3P3D
O
13
Auxiliary voltage output of the chip. In mission mode,
this pin is connected to V3P3SYS by the internal
selection switch. In BRN mode, it is internally
connected to VBAT. V3P3D is floating in LCD and
sleep mode. A 0.1 µF bypass capacitor to ground
must be connected to this pin.
40
60
VDD
O
–
The output of the 2.5V regulator. This pin is powered
in MSN and BRN modes. A 0.1 µF bypass capacitor to
ground should be connected to this pin.
57
89
VLCD
O
–
The output of the LCD DAC. A 0.1 µF bypass
capacitor to ground should be connected to this pin.
46
70
VBAT
P
12
Battery backup pin to support the battery modes (BRN,
LCD). A battery or super-capacitor is to be connected
between VBAT and GNDD. If no battery is used,
connect VBAT to V3P3SYS.
47
71
VBAT_RTC
P
12
RTC and oscillator power supply. A battery or super-
capacitor is to be connected between VBAT and
GNDD. If no battery is used, connect VBAT_RTC to
V3P3SYS.



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