Datasheet

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

71M6543F/71M6543G Data Sheet

2 v2

Table of Contents

1 Introduction ....................................................................................................................................... 10

2 Hardware Description ....................................................................................................................... 11

2.1 Hardware Overview ................................................................................................................... 11

2.2 Analog Front-End (AFE) ............................................................................................................ 12

2.2.1 Signal Input Pins ............................................................................................................ 13

2.2.2 Input Multiplexer............................................................................................................. 14

2.2.3 Delay Compensation ..................................................................................................... 19

2.2.4 ADC Pre-Amplifier ......................................................................................................... 20

2.2.5 A/D Converter (ADC) ..................................................................................................... 20

2.2.6 FIR Filter ........................................................................................................................ 20

2.2.7 Voltage References ....................................................................................................... 20

2.2.8 71M6xx3 Isolated Sensor Interface ............................................................................... 22

2.3 Digital Computation Engine (CE) ............................................................................................... 25

2.3.1 CE Program Memory ..................................................................................................... 25

2.3.2 CE Data Memory ........................................................................................................... 25

2.3.3 CE Communication with the MPU ................................................................................. 25

2.3.4 Meter Equations ............................................................................................................. 26

2.3.5 Real-Time Monitor (RTM) .............................................................................................. 26

2.3.6 Pulse Generators ........................................................................................................... 26

2.3.7 CE Functional Overview ................................................................................................ 28

2.4 80515 MPU Core ....................................................................................................................... 30

2.4.1 Memory Organization and Addressing .......................................................................... 30

2.4.2 Special Function Registers (SFRs)................................................................................ 32

2.4.3 Generic 80515 Special Function Registers ................................................................... 33

2.4.4 Instruction Set ................................................................................................................ 35

2.4.5 UARTs ........................................................................................................................... 35

2.4.6 Timers and Counters ..................................................................................................... 38

2.4.7 WD Timer (Software Watchdog Timer) ......................................................................... 39

2.4.8 Interrupts ........................................................................................................................ 39

2.5 On-Chip Resources ................................................................................................................... 46

2.5.1 Physical Memory............................................................................................................ 46

2.5.2 Oscillator ........................................................................................................................ 48

2.5.3 PLL and Internal Clocks ................................................................................................. 49

2.5.4 Real-Time Clock (RTC) ................................................................................................. 49

2.5.5 71M6543 Temperature Sensor ...................................................................................... 53

2.5.6 71M6xx3 Temperature Sensor ...................................................................................... 56

2.5.7 71M6543 Battery Monitor .............................................................................................. 56

2.5.8 71M6xx3 VCC Monitor ................................................................................................... 56

2.5.9 UART and Optical Interface ........................................................................................... 56

2.5.10 Digital I/O and LCD Segment Drivers ............................................................................ 57

2.5.11 EEPROM Interface ........................................................................................................ 65

2.5.12 SPI Slave Port................................................................................................................ 67

2.5.13 Hardware Watchdog Timer ............................................................................................ 71

2.5.14 Test Ports (TMUXOUT and TMUX2OUT Pins) ............................................................. 72

3 Functional Description ..................................................................................................................... 74

3.1 Theory of Operation ................................................................................................................... 74

3.2 Battery Modes ............................................................................................................................ 74

3.2.1 BRN Mode ..................................................................................................................... 77