71M6532DSLASHF datasheet(2/121 Pages) MAXIM

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Data Sheet 71M6531D/F-71M6532D/F

FDS 6531/6532 005

Rev 2

Table of Contents

Hardware Description.......................................................................................................................10

1.1 Hardware Overview ...................................................................................................................10

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

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

1.2.2 Input Multiplexer.............................................................................................................11

1.2.3 A/D Converter (ADC) .....................................................................................................12

1.2.4 FIR Filter ........................................................................................................................12

1.2.5 Voltage References .......................................................................................................12

1.2.6 Temperature Sensor......................................................................................................14

1.2.7 Battery Monitor...............................................................................................................14

1.2.8 AFE Functional Description ...........................................................................................14

1.2.9 Digital Computation Engine (CE)...................................................................................15

1.2.10 Meter Equations.............................................................................................................16

1.2.11 Real-Time Monitor .........................................................................................................16

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

1.2.13 Data RAM (XRAM) ........................................................................................................17

1.2.14 Delay Compensation .....................................................................................................17

1.2.15 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 Special Function Registers (SFRs) Specific to the 71M6531D/F and 71M6532D/F.....24

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

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

1.3.7 Timers and Counters .....................................................................................................28

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

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

1.4 On-Chip Resources ...................................................................................................................36

1.4.1 Oscillator ........................................................................................................................36

1.4.2 Internal Clocks ...............................................................................................................36

1.4.3 Real-Time Clock (RTC) .................................................................................................37

1.4.4 Temperature Sensor......................................................................................................38

1.4.5 Physical Memory............................................................................................................38

1.4.6 Optical Interface.............................................................................................................40

1.4.7 Digital I/O – 71M6531D/F ..............................................................................................41

1.4.8 Digital I/O – 71M6532D/F ..............................................................................................43

1.4.9 Digital IO – Common Characteristics for 71M6531D/F and 71M6532D/F ....................44

1.4.10 LCD Drivers – 71M6531D/F ..........................................................................................45

1.4.11 LCD Drivers – 71M6532D/F ..........................................................................................46

1.4.12 LCD Drivers – Common Characteristics for 71M6531D/F and 71M6532D/F ...............46

1.4.13 Battery Monitor...............................................................................................................46

1.4.14 EEPROM Interface ........................................................................................................46

1.4.15 SPI Slave Port................................................................................................................49

1.4.16 Hardware Watchdog Timer............................................................................................52

1.4.17 Test Ports (TMUXOUT pin) ...........................................................................................53

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