71M6511/71M6511H
Single-Phase Energy Meter IC
DATA SHEET
AUGUST 2007
I/O Equivalent Circuits:
V3P3D
V3P3D
110K
V3P3A
Digital
Input
Pin
CMOS
Input
from
LCD SEG
Output
Pin
VREF
Pin
LCD
internal
Driver
reference
GNDD
GNDD
GNDA
Digital Input Equivalent Circuit
Type 1:
LCD Output Equivalent Circuit
Type 5:
VREF Equivalent Circuit
Type 9:
Standard Digital Input or
pin configured as DIO Input
with Internal Pull-Up
LCD SEG or
VREF
pin configured as LCD SEG
V3P3D
V3P3A
V3P3D
Digital
Input
Pin
CMOS
Input
from
Analog
To
V2P5
Pin
internal
Input
MUX
Pin
110K
reference
GNDD
GNDD
GNDD
GNDA
V2P5 Equivalent Circuit
Digital Input
Analog Input Equivalent Circuit
Type 10:
Type 2:
Type 6:
V2P5
Pin configured as DIO Input
with Internal Pull-Down
ADC Input
V3P3D
V3P3A
Digital
CMOS
Input
Input
Pin
Comparator
To
VLCD
Pin
LCD
Input
Pin
Comparator
Drivers
GNDD
GNDA
GNDD
VLCD Equivalent Circuit
Type 11:
Digital Input Type 3:
Comparator Input Equivalent
Circuit Type 7:
Standard Digital Input or
VLCD Power
pin configured as DIO Input
ComparatorInput
V3P3D
V3P3D
V3P3D
Digital
CMOS
Output
Output
Pin
Oscillator
Pin
To
Power
VBAT
Pin
Oscillator
Down
Circuits
GNDD
GNDD
GNDD
GNDD
Digital Output Equivalent Circuit
Type 4:
Oscillator Equivalent Circuit
Type 8:
VBAT Equivalent Circuit
Type 12:
Standard Digital Output or
pin configured as DIO Output
Oscillator I/O
VBAT Power
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