71m6543h-igtr/f Maxim Integrated Products, Inc., 71m6543h-igtr/f Datasheet - Page 154

• Manufacturer Part Number: 71m6543h-igtr/f
• Description: Energy Meter Ic
• Manufacturer: Maxim Integrated Products, Inc.

71M6543F/H Data Sheet
6.9.4 I/O Equivalent Circuits
154
Digital
Input
Pin
Digital
Output
CMOS
Input
Pin
Digital
Digital Output Equivalent Circuit
Input
Digital Input Equivalent Circuit
Pin
pin configured as DIO Output
pin configured as DIO Input
Pin configured as DIO Input
pin configured as DIO Input
Standard Digital Output or
Standard Digital Input or
Standard Digital Input or
with Internal Pull-Down
Digital Input Type 3:
V3P3D
V3P3D
with Internal Pull-Up
GNDD
Digital Input
GNDD
GNDD
110K
GNDD
Type 1:
Type 2:
Type 4:
V3P3D
GNDD
110K
GNDD
V3P3D
V3P3D
CMOS
CMOS
Input
Output
V3P3D
Digital
Input
© 2008–2011 Teridian Semiconductor Corporation
Pin
CMOS
Input
Figure 47: I/O Equivalent Circuits
Oscillator
Comparator
Pin
Driver
Input
LCD
Pin
Analog Input Equivalent Circuit
LCD Output Equivalent Circuit
Oscillator Equivalent Circuit
Comparator Input Equivalent
Analog
Input
pin configured as LCD SEG
Pin
V3P3A
Comparator Input
Circuit Type 7:
Oscillator I/O
LCD SEG or
GNDD
V3P3A
Type 8:
ADC Input
Type 5:
Type 6:
GNDA
GNDA
GNDD
Oscillator
V3P3SYS
VBAT
Comparator
LCD SEG
from
from
To
Output
MUX
To
Pin
To
V3P3D Equivalent Circuit
10
40
Type 13:
V3P3D
VBAT
Pin
reference
VLCD
internal
Pin
reference
VLCD Equivalent Circuit
from
VBAT Equivalent Circuit
VREF Equivalent Circuit
internal
V2P5 Equivalent Circuit
from
V3P3D
Pin
VLCD Power
VBAT Power
Type 11:
Type 12:
Type 9:
GNDD
Type 10:
VREF
V3P3A
GNDD
V2P5
V3P3D
GNDA
GNDD
Drivers
VREF
Circuits
Power
Down
Pin
V2P5
LCD
Pin
v1.0