78M6631 Ver la hoja de datos (PDF) - Maxim Integrated

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Fabricante

78M6631

3-Phase Power Measurement IC

Maxim Integrated 

78M6631 Data Sheet

DS_6631_056

Table of Contents

1 Hardware Functional Description ................................................................................................. 5

1.1 Hardware Overview.................................................................................................................5

1.2 Device Reset ..........................................................................................................................7

1.3 Power Management ................................................................................................................ 7

1.3.1 Voltage Regulator........................................................................................................ 7

1.3.2 Power Fault Management............................................................................................ 7

1.4 Analog Front-End (AFE)..........................................................................................................8

1.4.1 Analog Current and Voltage Inputs .............................................................................. 8

1.5 Digital Computation Engine (CE)............................................................................................. 9

1.6 80515 MPU Core .................................................................................................................. 10

1.6.1 SFRs......................................................................................................................... 10

1.7 RAM ..................................................................................................................................... 10

1.8 IORAM.................................................................................................................................. 10

1.9 Flash..................................................................................................................................... 10

1.9.1 Program Security....................................................................................................... 10

1.10 Oscillator............................................................................................................................... 11

1.11 PLL and Internal Clock Generation........................................................................................ 11

1.12 Real-Time Clock (RTC) ......................................................................................................... 11

1.13 Hardware Watchdog Timer.................................................................................................... 11

1.14 Temperature Sensor ............................................................................................................. 12

1.15 General Purpose Digital I/O................................................................................................... 12

1.16 D/Y Selection Pin .................................................................................................................. 12

1.17 EEPROM Interface................................................................................................................ 12

1.18 SPI Slave Port ...................................................................................................................... 12

1.19 Test Port ............................................................................................................................... 13

1.20 UART.................................................................................................................................... 13

1.21 In Circuit Emulator (ICE) Port ................................................................................................ 14

2 Electrical Specifications.............................................................................................................. 15

2.1 Absolute Maximum Ratings................................................................................................... 15

2.2 Recommended External Components ................................................................................... 16

2.3 Recommended Operating Conditions.................................................................................... 16

2.4 Performance Specifications................................................................................................... 17

2.4.1 Input Logic Levels ..................................................................................................... 17

2.4.2 Output Logic Levels................................................................................................... 17

2.4.3 Power-Fault Comparator ........................................................................................... 17

2.4.4 Power Supply Monitor ............................................................................................... 18

2.4.5 Supply Current .......................................................................................................... 18

2.4.6 Crystal Oscillator ....................................................................................................... 18

2.4.7 Temperature Sensor.................................................................................................. 19

2.4.8 VREF ........................................................................................................................ 19

2.4.9 ADC Converter, V3P3A Referenced .......................................................................... 20

2.5 Timing Specifications ............................................................................................................ 21

2.5.1 Flash Memory ........................................................................................................... 21

2.5.2 EEPROM Interface.................................................................................................... 21

2.5.3 RESET...................................................................................................................... 21

2.5.4 SPI Slave Port........................................................................................................... 22

3 Packaging .................................................................................................................................... 23

3.1 56-Pin QFN Package ............................................................................................................ 23

3.2 Pinout ................................................................................................................................... 23

3.2.1 56-Pin QFN Package Outline..................................................................................... 24

3.2.2 Recommended PCB Land Pattern for the QFN-56 Package ...................................... 25

4 Pin Descriptions .......................................................................................................................... 26

2

Rev 1

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