Datasheet

ManualsBrandsMAXIM INTEGRATED ManualsPMICsPMIC - power monitoring Single phase LQFP 64 Surface-mount

78M6612 Data Sheet DS_6612_001

2 Rev 2

Table of Contents

Hardware Description .................................................................................................................... 7

1.1 Hardware Overview................................................................................................................. 7

1.2 Analog Front End (AFE) .......................................................................................................... 8

1.2.1 Input Multiplexer .......................................................................................................... 8

1.2.2 A/D Converter (ADC) ................................................................................................... 9

1.2.3 FIR Filter ..................................................................................................................... 9

1.2.4 Voltage References ..................................................................................................... 9

1.2.5 Temperature Sensor.................................................................................................... 9

1.2.6 Battery Monitor ............................................................................................................ 9

1.3 Digital Computation Engine (CE) ........................................................................................... 10

1.3.1 Real-Time Monitor ..................................................................................................... 10

1.3.2 Pulse Generator ........................................................................................................ 10

1.3.3 Data RAM (XRAM) .................................................................................................... 10

1.4 80515 MPU Core .................................................................................................................. 11

1.4.1 UARTs ...................................................................................................................... 11

1.5 On-Chip Resources............................................................................................................... 11

1.5.1 Oscillator ................................................................................................................... 11

1.5.2 PLL and Internal Clocks............................................................................................. 11

1.5.3 Real-Time Clock (RTC) ............................................................................................. 12

1.5.4 Temperature Sensor.................................................................................................. 12

1.5.5 Flash Memory ........................................................................................................... 12

1.5.6 Optical Interface ........................................................................................................ 13

1.5.7 Digital I/O .................................................................................................................. 13

1.5.8 LCD Drivers .............................................................................................................. 16

1.5.9 EEPROM Interface .................................................................................................... 16

1.5.10 Hardware Watchdog Timer ........................................................................................ 17

1.5.11 Test Ports (TXUXOUT pin) ........................................................................................ 17

2 Functional Description ................................................................................................................ 18

2.1 Theory of Operation .............................................................................................................. 18

2.2 Fault and Reset Behavior ...................................................................................................... 19

2.2.1 Reset Mode ............................................................................................................... 19

2.2.2 Power Fault Circuit .................................................................................................... 19

2.3 Data Flow ............................................................................................................................. 19

2.4 CE/MPU Communication ...................................................................................................... 20

3 Application Information ............................................................................................................... 21

3.1 Connection of Sensors (CT, Resistive Shunt) ........................................................................ 21

3.2 Connecting 5 V Devices ........................................................................................................ 22

3.3 Temperature Measurement ................................................................................................... 22

3.4 Temperature Compensation .................................................................................................. 22

3.5 Connecting LCDs .................................................................................................................. 23

3.6 Connecting I

C EEPROMs .................................................................................................... 23

3.7 Connecting Three-Wire EEPROMs ....................................................................................... 24

3.8 UART0 (TX0/RX0) ................................................................................................................ 24

3.9 UART1 (TX1/RX1) ................................................................................................................ 25

3.10 Connecting V1 and Reset Pins .............................................................................................. 25

3.11 Connecting the Emulator Port Pins ........................................................................................ 26

3.12 Flash Programming ............................................................................................................... 26

3.13 MPU Firmware Library .......................................................................................................... 26

3.14 Crystal Oscillator ................................................................................................................... 26

3.15 Measurement Calibration ...................................................................................................... 27

4 Electrical Specifications .............................................................................................................. 28

4.1 Absolute Maximum Ratings ................................................................................................... 28

4.2 Recommended External Components ................................................................................... 29