Datasheet

FDS_6533_6534_004 71M6533/G/H and 71M6534/H Data Sheet
Rev 2 3
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 I
2
C 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