Datasheet

ManualsBrandsMAXIM INTEGRATED ManualsPMICsPMIC - power monitoring Three-phase, Neutral LQFP 100 Surface-mount

71M6533/G/H and 71M6534/H Data Sheet FDS_6533_6534_004

2 Rev 2

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