71M6521BE-IGTR/F【PDF 3/97 页】IC ENERGY METER 8K FLASH 64-LQFP

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71M6521BE

Energy Meter IC

DATA SHEET

JANUARY 2008

Test Ports ........................................................................................................................................46

FUNCTIONAL DESCRIPTION.....................................................................................................................................47

Theory of Operation .......................................................................................................................................47

System Timing Summary...............................................................................................................................48

Battery Modes................................................................................................................................................49

BROWNOUT Mode .........................................................................................................................50

LCD Mode .......................................................................................................................................51

SLEEP Mode ...................................................................................................................................51

Fault and Reset Behavior ..............................................................................................................................56

Wake Up Behavior .........................................................................................................................................57

Wake on PB.....................................................................................................................................57

Wake on Timer ................................................................................................................................57

Data Flow.......................................................................................................................................................58

CE/MPU Communication ...............................................................................................................................58

Temperature Measurement ...........................................................................................................................59

Temperature Compensation ..........................................................................................................................59

APPLICATION INFORMATION ...................................................................................................................................60

Connection of Sensors (CT, Resistive Shunt)................................................................................................60

Connecting 5V Devices..................................................................................................................................60

Connecting LCDs...........................................................................................................................................61

Connecting I 2 C EEPROMs ............................................................................................................................63

Connecting Three-Wire EEPROMs................................................................................................................63

UART0 (TX/RX) .............................................................................................................................................64

Optical Interface.............................................................................................................................................64

Connecting V1 and Reset Pins ......................................................................................................................65

Connecting the Emulator Port Pins ................................................................................................................66

Crystal Oscillator............................................................................................................................................67

Flash Programming........................................................................................................................................67

MPU Firmware Library ...................................................................................................................................67

Meter Calibration............................................................................................................................................67

FIRMWARE INTERFACE ............................................................................................................................................68

I/O RAM MAP – In Numerical Order ..............................................................................................................68

SFR MAP (SFRs Specific to TERIDIAN 80515) – In Numerical Order ..........................................................69

I/O RAM DESCRIPTION – Alphabetical Order ..............................................................................................70

CE Interface Description ................................................................................................................................76

CE Program.....................................................................................................................................76

Formats ...........................................................................................................................................76

Constants ........................................................................................................................................76

Environment ....................................................................................................................................76

CE Calculations ...............................................................................................................................77

CE STATUS ....................................................................................................................................77

V1.0

? 2005-2008 TERIDIAN Semiconductor Corporation

Page: 3 of 97

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