Descriptiondesigned to provide the user with a complete, ready-to-use energy meter application. It is a medium-end solution for power metering, using the ST72F321BR9T6 microcontroller, the M41T94 RTC (real-time clock), the M95256 EEPROM and the STPM14 energy meter ASSP device.The multi-tariff energy meter demonstration board implements many features that can be used as a starting platform for evaluation and development of meter applications, including multi-tariff management, absolute and average maximum demand calculation, two types of tamper management, and power failure management.STEVAL-IPE009V1www.st.comSchematic diagramSTEVAL-IPE009V12/7 1 Schematic diagram1.1 Multi-tariff single-phase meterFigure 1.Schematic - microcontroller and IrDA section, MCU oscillator/resetSDOSCLPFDPB6PA4RESETEMEMPB1OSC2OSC1PD5COM1VPPPD0PB0PD6IRQRTCNERTCTMPDPD2COM3COM2PB3PD4PD1PF6SDIPB2PB5PB7IRQSTPMPE6PD3PF5PF7ICCCLKIROUTPE7NPDPD7PF4IRINNLCDPA5PB4COM4ICCDATAIRQBUTT+5.0 VB+5.0 VB+5.0 VB+5.0 VB+5.0 VB+5.0 V Features Cost-effective and flexibleB = 5 A and I max = 80 A according to IEC 61036:1996 + A1: 2000 - Static meter for active energy (classes 1 and 2)Operating voltage range 220 V 20%Continuously detects and displays no-load conditions, reverse direction, fraud and case tamper conditionsmaximum demand type (day, one month or three month)Accumulated data for whole meter life (total kWh consumption, average MD (maximum demand), total number of tariffs, tariff time slots, consumption under different tariff rates, power failure date/time)Data for last 12 months (consumption under tamper mode for each month, first/last and power failure accumulating time for each month) Data for absolute maximum demand (absolute MD, date/time) according to type of MD requested SW LCD driver for 24 x 4 segment LCD glass with contrast controlRTC with SPI for real date/timeCase tamper detection even in power-down External switch for viewing all data stored in EEPROM sequentially even when AC power is not avail Data BriefFor further information contact your