Data Sheet 71M6531D/F-71M6532D/F
FDS 6531/6532 005
Table of Contents
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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
1.3 Digital Computation Engine (CE)...............................................................................................15
1.3.1 Meter Equations.............................................................................................................16
1.3.2 Real-Time Monitor .........................................................................................................16
1.3.3 Pulse Generators...........................................................................................................16
1.3.4 Data RAM (XRAM) ........................................................................................................17
1.3.5 CE Functional Overview ................................................................................................17
1.4 80515 MPU Core .......................................................................................................................19
1.4.1 Memory Organization and Addressing ..........................................................................19
1.4.2 Special Function Registers (SFRs) ...............................................................................21
1.4.3 Generic 80515 Special Function Registers ...................................................................22
1.4.4 Special Function Registers (SFRs) Specific to the 71M6531D/F and 71M6532D/F.....25
1.4.5 Instruction Set................................................................................................................26
1.4.6 UARTs ...........................................................................................................................26
1.4.7 Timers and Counters .....................................................................................................29
1.4.8 WD Timer (Software Watchdog Timer) .........................................................................30
1.4.9 Interrupts........................................................................................................................30
1.5 On-Chip Resources ...................................................................................................................37
1.5.1 Oscillator........................................................................................................................37
1.5.2 Internal Clocks...............................................................................................................37
1.5.3 Real-Time Clock (RTC) .................................................................................................38
1.5.4 Temperature Sensor......................................................................................................39
1.5.5 Physical Memory............................................................................................................39
1.5.6 Optical Interface.............................................................................................................41
1.5.7 Digital I/O – 71M6531D/F ..............................................................................................42
1.5.8 Digital I/O – 71M6532D/F ..............................................................................................43
1.5.9 Digital IO – Common Characteristics for 71M6531D/F and 71M6532D/F ....................45
1.5.10 LCD Drivers – 71M6531D/F ..........................................................................................46
1.5.11 LCD Drivers – 71M6532D/F ..........................................................................................46
1.5.12 LCD Drivers – Common Characteristics for 71M6531D/F and 71M6532D/F ...............47
1.5.13 Battery Monitor...............................................................................................................47
1.5.14 EEPROM Interface ........................................................................................................47
1.5.15 SPI Slave Port................................................................................................................50
1.5.16 Hardware Watchdog Timer............................................................................................51
1.5.17 Test Ports (TMUXOUT pin) ...........................................................................................52
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