71M6533 Datasheet, PDF (2/132 Pages) Teridian Semiconductor Corporation – Energy Meter IC

71M6533/G/H and 71M6534/H Data Sheet
FDS_6533_6534_004
Table of Contents
1 Hardware Description....................................................................................................................9
1.1 Hardware Overview...............................................................................................................9
1.2 Analog Front End (AFE)........................................................................................................9
1.2.1 Signal Input Pins ......................................................................................................... 9
1.2.2 Input Multiplexer........................................................................................................ 10
1.2.3 A/D Converter (ADC)................................................................................................. 11
1.2.4 FIR Filter ................................................................................................................... 11
1.2.5 Voltage References................................................................................................... 12
1.2.6 Temperature Sensor.................................................................................................. 13
1.2.7 Battery Monitor.......................................................................................................... 13
1.2.8 AFE Functional Description ....................................................................................... 13
1.3 Digital Computation Engine (CE) ....................................................................................... 14
1.3.1 Meter Equations ........................................................................................................ 15
1.3.2 Real-Time Monitor..................................................................................................... 16
1.3.3 Pulse Generators ...................................................................................................... 16
1.3.4 Data RAM (XRAM) .................................................................................................... 16
1.3.5 CE Functional Overview ............................................................................................ 17
1.3.6 Delay Compensation ................................................................................................. 18
1.4 80515 MPU Core.................................................................................................................. 19
1.4.1 Memory Organization and Addressing ....................................................................... 19
1.4.2 Special Function Registers (SFRs) ............................................................................ 21
1.4.3 Generic 80515 Special Function Registers ................................................................ 22
1.4.4 71M6533/71M6534-Specific Special Function Registers ............................................ 25
1.4.5 Instruction Set ........................................................................................................... 26
1.4.6 UARTs ...................................................................................................................... 26
1.4.7 Timers and Counters ................................................................................................. 29
1.4.8 WD Timer (Software Watchdog Timer) ...................................................................... 30
1.4.9 Interrupts................................................................................................................... 30
1.5 On-Chip Resources............................................................................................................. 37
1.5.1 Oscillator................................................................................................................... 37
1.5.2 PLL and Internal Clocks............................................................................................. 37
1.5.3 Real-Time Clock (RTC) ............................................................................................. 38
1.5.4 Temperature Sensor.................................................................................................. 39
1.5.5 Physical Memory ....................................................................................................... 39
1.5.6 Optical Interface ........................................................................................................ 42
1.5.7 Digital I/O .................................................................................................................. 42
1.5.8 LCD Drivers .............................................................................................................. 46
1.5.9 Battery Monitor.......................................................................................................... 47
1.5.10 EEPROM Interface.................................................................................................... 47
1.5.11 SPI Slave Port........................................................................................................... 50
1.5.12 Hardware Watchdog Timer........................................................................................ 53
1.5.13 Test Ports (TMUXOUT Pin) ....................................................................................... 54
1.5.14 V2 Comparator (71M6534/6534H Only)..................................................................... 54
2 Functional Description ................................................................................................................ 55
2.1 Theory of Operation............................................................................................................ 55
2.2 System Timing Summary.................................................................................................... 56
2.3 Battery Modes ..................................................................................................................... 57
2.3.1 BROWNOUT Mode ................................................................................................... 59
2
Rev 2