71M6513/71M6513H
3-Phase Energy Meter IC
A Maxim Integrated Products Brand
DATA SHEET
SEPTEMBER 2011
Physical Memory.......................................................................................................41
Oscillator...................................................................................................................42
Real-Time Clock (RTC)..............................................................................................42
Comparators (V2, V3)................................................................................................42
LCD Drivers ..............................................................................................................43
LCD Voltage Boost Circuitry.......................................................................................43
UART (UART0) and Optical Port (UART1)..................................................................44
Hardware Reset Mechanisms ....................................................................................44
Reset Pin (RESETZ)..................................................................................................44
Hardware Watchdog Timer ........................................................................................44
Crystal Frequency Monitor.........................................................................................44
V1 Pin.......................................................................................................................44
Internal Clocks and Clock Dividers.............................................................................45
I2C Interface (EEPROM) ...........................................................................................45
Battery......................................................................................................................47
Internal Voltages (VBIAS, VBAT, V2P5).....................................................................47
Test Ports .................................................................................................................47
FUNCTIONAL DESCRIPTION ..............................................................................................................49
Theory of Operation ................................................................................................................49
System Timing Summary.........................................................................................................50
Data Flow ...............................................................................................................................52
CE/MPU Communication.........................................................................................................52
Fault, Reset, Power-Up ...........................................................................................................53
Battery Operation....................................................................................................................54
Power Save Modes.................................................................................................................54
Chopping Circuitry...................................................................................................................55
Internal/External Pulse Generation and Pulse Counting............................................................57
Program Security ....................................................................................................................58
FIRMWARE INTERFACE .....................................................................................................................59
I/O RAM MAP – In Numerical Order.........................................................................................59
SFR MAP (SFRs Specific to Teridian 80515) – In Numerical Order...........................................60
I/O RAM (Configuration RAM) – Alphabetical Order..................................................................61
CE Program and Environment .................................................................................................67
CE Program ..............................................................................................................67
Formats.....................................................................................................................67
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