71M6521DE Datasheet, PDF (4/107 Pages) Teridian Semiconductor Corporation – Energy Meter IC

71M6521DE/DH/FE Data Sheet
Formats ......................................................................................................................... 82
Constants ...................................................................................................................... 82
Environment .................................................................................................................. 82
CE Calculations ............................................................................................................. 83
CE STATUS .................................................................................................................. 83
CE TRANSFER VARIABLES ........................................................................................ 85
ELECTRICAL SPECIFICATIONS .............................................................................................................. 89
ABSOLUTE MAXIMUM RATINGS .............................................................................................. 89
RECOMMENDED EXTERNAL COMPONENTS ......................................................................... 90
RECOMMENDED OPERATING CONDITIONS .......................................................................... 90
PERFORMANCE SPECIFICATIONS .......................................................................................... 91
INPUT LOGIC LEVELS ................................................................................................. 91
OUTPUT LOGIC LEVELS ............................................................................................. 91
POWER-FAULT COMPARATOR .................................................................................. 91
BATTERY MONITOR .................................................................................................... 91
SUPPLY CURRENT ...................................................................................................... 92
V3P3D SWITCH ............................................................................................................ 92
2.5 V VOLTAGE REGULATOR ..................................................................................... 92
LOW POWER VOLTAGE REGULATOR....................................................................... 92
CRYSTAL OSCILLATOR .............................................................................................. 93
VREF, VBIAS ................................................................................................................ 93
LCD DRIVERS .............................................................................................................. 94
ADC CONVERTER, V3P3A REFERENCED................................................................. 94
TEMPERATURE SENSOR ........................................................................................... 95
TIMING SPECIFICATIONS ......................................................................................................... 96
RAM AND FLASH MEMORY ..................................................................................................................... 96
FLASH MEMORY TIMING ............................................................................................ 96
EEPROM INTERFACE.................................................................................................. 96
RESET and V1 .............................................................................................................. 96
RTC ............................................................................................................................... 96
TYPICAL PERFORMANCE DATA ................................................................................ 97
PACKAGE OUTLINE (LQFP 64) ................................................................................................. 98
PACKAGE OUTLINE (QFN 68) ................................................................................................... 98
PINOUT (LQFP-64) ..................................................................................................................... 100
PINOUT (QFN 68) ....................................................................................................................... 100
Recommended PCB Land Pattern for the QFN-68 Package ....................................................... 101
PIN DESCRIPTIONS ................................................................................................................... 102
Power/Ground Pins: ...................................................................................................... 102
Analog Pins: .................................................................................................................. 102
Digital Pins:.................................................................................................................... 103
I/O Equivalent Circuits: .................................................................................................. 104
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