71M6533 Datasheet, PDF (3/132 Pages) Teridian Semiconductor Corporation – Energy Meter IC

FDS_6533_6534_004
71M6533/G/H and 71M6534/H Data Sheet
2.3.2 LCD Mode................................................................................................................. 59
2.3.3 SLEEP Mode............................................................................................................. 59
2.4 Fault and Reset Behavior ................................................................................................... 65
2.4.1 Reset Mode............................................................................................................... 65
2.4.2 Power Fault Circuit .................................................................................................... 65
2.5 Wake Up Behavior............................................................................................................... 65
2.5.1 Wake on PB .............................................................................................................. 65
2.5.2 Wake on Timer.......................................................................................................... 66
2.6 Data Flow............................................................................................................................. 66
2.7 CE/MPU Communication .................................................................................................... 67
3 Application Information............................................................................................................... 68
3.1 Connection of Sensors (CT, Resistive Shunt) ................................................................... 68
3.2 Distinction between 71M6533/71M6534 and 71M6533G/H/71M6534H Parts ..................... 68
3.3 Connecting 5 V Devices...................................................................................................... 69
3.4 Temperature Measurement................................................................................................. 69
3.5 Temperature Compensation ............................................................................................... 69
3.5.1 Temperature Coefficients .......................................................................................... 69
3.5.2 Temperature Compensation for VREF....................................................................... 71
3.5.3 System Temperature Compensation.......................................................................... 72
3.5.4 Temperature Compensation for the RTC ................................................................... 72
3.6 Connecting LCDs ................................................................................................................ 72
3.7 Connecting I²C EEPROMs .................................................................................................. 73
3.8 Connecting Three-Wire EEPROMs ..................................................................................... 73
3.9 UART0 (TX/RX).................................................................................................................... 74
3.10 Optical Interface (UART1)................................................................................................... 74
3.11 Connecting the V1 Pin ........................................................................................................ 75
3.12 Connecting the Reset Pin ................................................................................................... 75
3.13 Connecting the Emulator Port Pins.................................................................................... 76
3.14 Connecting a Battery .......................................................................................................... 76
3.15 Flash Programming ............................................................................................................ 77
3.16 MPU Firmware Library ........................................................................................................ 77
3.17 Crystal Oscillator ................................................................................................................ 77
3.18 Meter Calibration................................................................................................................. 78
4 Firmware Interface....................................................................................................................... 79
4.1 I/O RAM and SFR Map –Functional Order.......................................................................... 79
4.2 I/O RAM Description – Alphabetical Order......................................................................... 83
4.3 CE Interface Description..................................................................................................... 95
4.3.1 CE Program .............................................................................................................. 95
4.3.2 CE Data Format ........................................................................................................ 95
4.3.3 Constants.................................................................................................................. 95
4.3.4 Environment.............................................................................................................. 96
4.3.5 CE Calculations......................................................................................................... 97
4.3.6 CE Front End Data (Raw Data).................................................................................. 97
4.3.7 CE Status and Control............................................................................................... 98
4.3.8 CE Transfer Variables ............................................................................................. 100
4.3.9 Temperature Measurement and Temperature Compensation .................................. 102
4.3.10 Pulse Generation..................................................................................................... 102
4.3.11 Noise Suppression and Version Parameters............................................................ 104
4.3.12 CE Calibration Parameters ...................................................................................... 104
4.3.13 CE Flow Diagrams .................................................................................................. 105
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