71M6533 Datasheet, PDF(2/124 Page) Teridian Semiconductor Corporation

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71M6533 Datasheet, PDF (2/124 Pages) Teridian Semiconductor Corporation – Energy Meter IC

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71M6533/71M6534 Data Sheet

FDS_6533_6534_004

Table of Contents

1 Hardware Description......................................................................................................................... 9

1.1

Hardware Overview.................................................................................................................... 9

1.2

Analog Front End (AFE) .......................................................................................................... 10

1.2.1 Signal Input Pins ............................................................................................................ 10

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

1.2.9 Digital Computation Engine (CE)................................................................................... 14

1.2.10 Meter Equations............................................................................................................. 15

1.2.11 Real-Time Monitor ......................................................................................................... 15

1.2.12 Pulse Generators ........................................................................................................... 16

1.2.13 Data RAM (XRAM) ........................................................................................................ 16

1.2.14 CE Functional Overview ................................................................................................ 17

1.3

80515 MPU Core....................................................................................................................... 19

1.3.1 Memory Organization and Addressing .......................................................................... 19

1.3.2 Special Function Registers (SFRs) ............................................................................... 21

1.3.3 Generic 80515 Special Function Registers ................................................................... 22

1.3.4 71M6533/71M6534-Specific Special Function Registers .............................................. 25

1.3.5 Instruction Set ................................................................................................................ 26

1.3.6 UARTs ........................................................................................................................... 26

1.3.7 Timers and Counters ..................................................................................................... 29

1.3.8 WD Timer (Software Watchdog Timer) ......................................................................... 30

1.3.9 Interrupts........................................................................................................................ 30

1.4

On-Chip Resources ................................................................................................................. 37

1.4.1 Oscillator ........................................................................................................................ 37

1.4.2 PLL and Internal Clocks................................................................................................. 37

1.4.3 Real-Time Clock (RTC) ................................................................................................. 38

1.4.4 Temperature Sensor ...................................................................................................... 39

1.4.5 Physical Memory............................................................................................................ 39

1.4.6 UART and Optical Interface........................................................................................... 41

1.4.7 Digital I/O ....................................................................................................................... 42

1.4.8 LCD Drivers ................................................................................................................... 45

1.4.9 Battery Monitor............................................................................................................... 46

1.4.10 EEPROM Interface ........................................................................................................ 46

1.4.11 SPI Slave Port................................................................................................................ 49

1.4.12 Hardware Watchdog Timer............................................................................................ 51

1.4.13 Test Ports (TMUXOUT Pin) ........................................................................................... 51

1.4.14 V2 Comparator (71M6534/6534H only)......................................................................... 52

2 Functional Description ..................................................................................................................... 53

2.1

Theory of Operation................................................................................................................. 53

2.2

System Timing Summary ........................................................................................................ 54

2.3

Battery Modes .......................................................................................................................... 55

2.3.1 BROWNOUT Mode ....................................................................................................... 56

2.3.2 LCD Mode...................................................................................................................... 57

v1.1

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