71M6545/71M6545H Data Sheet
Table of Contents
1 Introduction ......................................................................................................................................... 9
2 Hardware Description....................................................................................................................... 10
2.1 Hardware Overview ................................................................................................................... 10
2.2 Analog Front End (AFE)............................................................................................................. 11
2.2.1 Signal Input Pins ............................................................................................................ 12
2.2.2 Input Multiplexer............................................................................................................. 13
2.2.3 Delay Compensation ..................................................................................................... 18
2.2.4 ADC Pre-Amplifier ......................................................................................................... 19
2.2.5 A/D Converter (ADC) ..................................................................................................... 19
2.2.6 FIR Filter ........................................................................................................................ 19
2.2.7 Voltage References ....................................................................................................... 19
2.2.8 71M6xx3 Isolated Sensor Interface ............................................................................... 20
2.3 Digital Computation Engine (CE) ............................................................................................... 24
2.3.1 CE Program Memory ..................................................................................................... 24
2.3.2 CE Data Memory ........................................................................................................... 24
2.3.3 CE Communication with the MPU ................................................................................. 24
2.3.4 Meter Equations............................................................................................................. 25
2.3.5 Real-Time Monitor (RTM) .............................................................................................. 25
2.3.6 Pulse Generators ........................................................................................................... 25
2.3.7 CE Functional Overview ................................................................................................ 27
2.4 80515 MPU Core ....................................................................................................................... 29
2.4.1 MPU Setup Code ........................................................................................................... 29
2.4.2 80515 MPU Overview .................................................................................................... 29
2.4.3 Memory Organization and Addressing .......................................................................... 30
2.4.4 Special Function Registers (SFRs)................................................................................ 32
2.4.5 Generic 80515 Special Function Registers ................................................................... 33
2.4.6 Instruction Set ................................................................................................................ 35
2.4.7 UARTs ........................................................................................................................... 35
2.4.8 Timers and Counters ..................................................................................................... 37
2.4.9 WD Timer (Software Watchdog Timer) ......................................................................... 39
2.4.10 Interrupts........................................................................................................................ 39
2.5 On-Chip Resources ................................................................................................................... 45
2.5.1 Physical Memory............................................................................................................ 45
2.5.2 Oscillator ........................................................................................................................ 47
2.5.3 PLL and Internal Clocks................................................................................................. 47
2.5.4 Real-Time Clock (RTC) ................................................................................................. 48
2.5.5 71M6545/H Temperature Sensor .................................................................................. 52
2.5.6 71M6xx3 Temperature Sensor ...................................................................................... 53
2.5.7 71M6545/H Battery Monitor........................................................................................... 54
2.5.8 71M6xx3 VCC Monitor................................................................................................... 54
2.5.9 UART Interface .............................................................................................................. 54
2.5.10 DIO Pins......................................................................................................................... 54
2.5.11 EEPROM Interface ........................................................................................................ 56
2.5.12 SPI Slave Port................................................................................................................ 59
2.5.13 Hardware Watchdog Timer............................................................................................ 63
2.5.14 Test Ports (TMUXOUT and TMUX2OUT Pins) ............................................................. 63
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