Datasheet

71M6513/71M6513H
3-Phase Energy Meter IC
DATA SHEET
SEPTEMBER 2011
© 2005-2011 Teridian Semiconductor Corporation Page: 3 of 104
A Maxim Integrated Products Brand
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