71M6543F datasheet(2/157 Pages) MAXIM

2 / 157 page

71M6543F/H and 71M6543G/GH Data Sheet

v1.2

Table of Contents

Introduction ................................................................................................................................. 10

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 80515 Power Reduction Modes................................................................................. 35

2.4.6 UARTs ...................................................................................................................... 36

2.4.7 Timers and Counters ................................................................................................. 38

2.4.8 WD Timer (Software Watchdog Timer) ...................................................................... 40

2.4.9 Interrupts................................................................................................................... 40

2.5

On-Chip Resources............................................................................................................... 47

2.5.1 Physical Memory ....................................................................................................... 47

2.5.2 Oscillator................................................................................................................... 49

2.5.3 PLL and Internal Clocks............................................................................................. 50

2.5.4 Real-Time Clock (RTC) ............................................................................................. 51

2.5.5 71M6543 Temperature Sensor .................................................................................. 55

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

2.5.7 71M6543 Battery Monitor .......................................................................................... 57

2.5.8 71M6xx3 VCC Monitor .............................................................................................. 57

2.5.9 UART and Optical Interface....................................................................................... 57

2.5.10 Digital I/O and LCD Segment Drivers......................................................................... 58

2.5.11 EEPROM Interface.................................................................................................... 66

2.5.12 SPI Slave Port........................................................................................................... 68

2.5.13 Hardware Watchdog Timer........................................................................................ 72

2.5.14 Test Ports (TMUXOUT and TMUX2OUT Pins)........................................................... 73

Functional Description ................................................................................................................ 75

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