"user manual"
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1. lt o o Parity Even Stop bits 1 v Dhvice check No E String STm STMicroelectron E ON A OFF Data 213fb130b233210d0a String ha Baud Rate set at 300bps Request Even parity is Message selected ems Lab amp technical marketing 19 Evaluation boards Availability Store Entry within Q2 10 RoHS Al the documents DRAFT available Board Package Schematics Gerber files PC GUI EXE User Manual Order code STEVAL IPEO12V1 v Key Products STM8L152C6T6 STPM10BTR BAT30KFILM Y TLA31AIZT M24C32 RMN6TP Note the application source IDE ST Visual Develop cosmic compiler is available only on request and it is covered by license agreement Systems Lab amp technical marketing THANKS Nitin Agarwal oo 199 6362 Menka Tangri n272 anor si com 199 6361 t 52. scalar and Clock Divider circuit to calculate LCD Frame Rate 30Hz 100 2 How LCD Glass is driven Initialize the HW LCD controller with following Register settings as LCD Specifications LCD Prescaler amp LCD Divider in LCD FREQ to obtain LCD Frame Rate LCD Duty amp LCD Bias in LCD VLCD internal external Contrast control Pulse On Duration in LCD CR2 For LCD working with voltage 2 6V to 3 3V use internal VLCD Pulse On Duration is required to control internal contrast control circuit Avoid using HIGH Drive Enable which makes the circuit turn on time maximum LCDs with higher internal resistance require more switching time to achieve satisfactory contrast Configure required LCD Segments in LCD PM LCD pixel on off is controlled through LCD RAM registers Enable LCD in LCD CR3 M nele an Systems Lab amp technical marketing STMS8L152 LCD Energy Meter Solution Energy meter Solution LCD Application Interface To make the Energy meter LCD application layer user configurable for display symbol management two dimensional uc8 LCDDisplayArray is designed in following manner For each symbol of metering interest like DATE LCD RAM Register number and LCD RAM register bit index is defined e g const u8 uc8 LCDDisplayArray LCD RAMRegister 0 0 Date 0 RAMRegister 0 1 1 LCD RAMRegister 0 2 Time 2 RAMRegister 0 3 2A 3 j n case of change in LCD ha
3. Ay Single Phase Energy meter based on STPM Metering IC and STM8L MCU Nitin Agarwal Menka Tangri IMS Systems LAB amp Technical Marketing India n Single Phase Energy Meter solution based on STPM10 STM8L152 ST Demonstration board features Key Products e Class 1 accuracy with anti tamper feature STM8L152C6T6 e Rated Current 5A 30A Imax v BAT30KFILM e Operating Range 0 6Vb to 1 2Vb v TL431AlZT External EEPROM used to store calibration M24C32 RMN6TP parameters tampering information Typical Applications erg Y Domestic electricity meterin e Rechargeable Battery for showing LCD i 9 parameters case Of power down mode Msi also E E e Neutral missing and Case tampering feature Auto Calibration of Board 240V 10A e 4VA power consumption for voltage circuit e HN LCD driver e Sensor Primary side CT and secondary side Shunt e Communication IrDA Order code STEVAL IPE012V1 Vb same as rated Voltage Systems Lab amp technical marketing Block diagram ST A V Phase Phase input voltage 3 3V Storage device 22 PULSE LED Lab amp technical marketing Dual Battery Management Circuit ky7 D2 D5 D4 CR2032 Coin Cell D3 BAT30K 10K D1 P Recharge Systems Lab amp technical m
4. C 62056 21 mode C STMaL has inbuilt IrDA interface IrDA can be disabled by a single bit only so STM8L can work in SCI mode as well as IrDA mode Systems Lab amp technical marketing Board Specs EEPROM amp IO Usage Board size 9 7 Specification 2500T with x8 Multiplication factor in STPMO1 STPM10 Connected to Primary Channel of STPMO1 STPM10 Shunt Specifications 500 with x32 Multiplication factor STPMO1 STPM10 Connected to Secondary Channel STPM01 STPM10 Total lO usage 22LCD LCD glass 18x4 4 for STPM interface 2 for 2 EEPROM interface 3 for IRDA including 1 IO for Shunt Down for IRDA module 1 Case tamper detection 1 Magnetic tamper detection IO 1 LED pin detection from STPMO1 STPM10 1 Pulse LED 1 push button IO 2 LSE 1 50Hz output when neutral missing 210s are free 920 Bytes of EEPROM usage CPU Usage and Power Consumption Autoscroll timing 2 8 Sec Configurable Microcontroller CPU Frequency 2MHz Total Current Consumption 7mA Voltage Circuit Consumption 4 9 Basic Voltage STPM read registers 25Hz 920 Bytes of EEPROM usage Approximately 1296 CPU loaded at no load Systems Lab amp technical marketing EEPROM DATA structure Data Storage Structure is as follows CE Main Entry with CRC verage PF Tamper N Month N 1 Month N 2 Month N 3 Month N 4 Month N 5 Month N 6 Month CE Till last month CE Till l
5. arketing Board Specifications 1 3 Rated Voltage 240Vac Vref Rated Current 5A Ib 30A Imax Operating Range 0 6Vnom 1 2Vnom 144V 288V Power Consumption Voltage Circuit 4VA Mater Accuracy Class 1 0 Display Numeric Display 6 1 Digits quoted t ms L 04 technical marketing Board Specifications 2 3 ky Display Parameters and Sequence Auto Scroll Mode Display the below parameters in auto cyclic mode approx 8 sec each Cumulative Active Energy kWh Max Demand kW of last month Average PF of last consumption month Push Button Mode Display below items on press of the switch or one by one after 10 sec each LCD Segment Check Date and Time Demand since last reset Cumulative energy for last six months month wise Max Demand for last six months month wise Instantaneous PF Instantaneous Voltage Instantaneous Current Instantaneous Load in kW Board Specifications 3 3 kWh least Count Each pulse is stored so granularity 0 0003125 kWh 3200 imp per kWh Max Demand registration and MD Reset Maxdemand is monitored at 30 Min interval The MD automatically resets at 24 00 Hrs of last date of each calendar month Systems Lab amp technical marketing Indications and Other conditions Power Outage condition Two batteries to be used Primary battery connected through push button Ba
6. ast month CE Till last month CE Till last month CE Till last month CE Till last month CE Till last month MD MD MD CE Cur Month A CE Current Month CE Current Month CE Current Month CE Current Month CE Current Month CE Current Month Average PF Average PF Average PF Average PF Average PF Average PF Ay CE Duplicate Copy with CRC Count for Cumulative Energy Overflow Power Down date amp Time Where N is the Current month All parameters are logged for total 7 months including one current amp 6 last months EEPROM DATA structure Size overview Ky Parameter Size in Bytes Total Cumulative Energy Duplicate 7 4 bytes 2byte 1 byte CRC Entry 1 mE months Total Cumulative Energy Duplicate 7 4 bytes 2byte 1 byte CRC Entry 2 Count for Cumulative Energy Overflow 1 byte Power Down Entry 6 bytes EEPROM Data structuring is done in modular way to support future updates Reconfigure parameters in header file emeter datamgmt h to modify log structure entry count M pele Systems Lab amp technical marketing STMS8L152 LCD Driving S77 STM8L152 LCD Driver has following features LCD Glass is driven by RTC Clock LCD Segment Support Upto 4 28 Segments Up to 112 Pixels Inbuilt LCD Voltage Booster with VLCD output 2 6V to 3 3V Supports Duty Up to 1 4 and Bias Up to 1 3 Frequency generator consists of Pre
7. rdware change the respective RAM register and Register bit number for the respective symbol Application Routines are available for display symbols energy values with units and symbol display in glassdisplay c M nele an Systems Lab amp technical marketing Code Size Total Code Size 27 5K Total RAM 703 Bytes STPM Interface Including calculation Algorithm Flash 3 K RAM 183 Bytes STPM Auto Calibration Flash 2 20 74 Bytes LCD Interface Layer Flash 3 45 K 14 Bytes IRDA Interface layer Flash 3 60 K RAM 161 Bytes EEPROM management Flash 6 5 RAM 34 Bytes M nele an Systems Lab amp technical marketing STM8L Key Features STi Very low balanced consumption consumption versus performance 4 ultra low power modes 1 with RTCC and and context retention LCD low power wait and run modes DMA true E2PROM free touch sense library Fast wake up 4 2 s from low power modes Enhanced security features Operating power supply range 1 8 V to 3 6 V Reset system USART down to 1 65 V at power down y POR PDR Advanced analogue ADC DAC comparators Era operating at 1 8 V 1 Harvard architecture and 3 stage pipeline freq 16 MHz 16 CISC MIPS peak 32KB Flash Memory 2 Channels LCD up to 4x28 segments w step up converter Up to 32 KB of Flash program memory and 1 Kbyte of da
8. ta EEPROM with ECC RWW 2x Watchdog Synchronous serial interface SPI and Fast 126 S 2KB SRAM WDG 400 kHz SMBus and PMBus USART ISO 7816 interface and IrDA Upto41l Os K d xComparator Systems Lab amp technical marketing 17 STPM Ay Measurement active reactive apparent energies Vrms Irms frequency Current sensors current transformer shunt Accuracy 0 1 in 1 1000 range Fast digital calibration very short calibration time in only one load point no ripple in the active energy separated for voltage and current by neutral current monitoring Fast digital calibration in only one load point Supports IEC 61036 and ANSI C12 1 WDA VDDD VOTP m Voltage REF Linear Vregs Oscillator i pose Eu CLKIN CLKOUT SCL NC SCS SYN SDA TD M pele Systems Lab amp technical marketing 18 PC GUI PC GUI used for setting real date and time PC GUI for testing protocol 62056 21 mode C using SCI Serial Communication Interface of STM8L device RDI without IrDA ENDEC STM8L Ay Data bits e DTR control Keep off 2 SeriallO xl 5 Received data 2 COM options lt Hexadecimal gt 2F 53 54 6D 30 53 54 4D 59 62 72 65 6C 55 63 74 72 g Port name COM1 v Hardware flow None sil Baud rate 300 Software flow None
9. ttery for RTC backup only LED Indications 1 LED Test Output LED imp per kWh Indications on LCD AC Mains On Earth Tamper Reverse Connection Neutral Missing Tamper Case Tamper Other Detection Magnetic Tamper detection Current Sensors Can use CT and or Shunt Use CT on Phase and Shunt on Neutral Line Systems Lab amp technical marketing Tamper Protection Definitions y Earth Tamper Using Earth in place of neutral load current is passed partially or fully through earth Reverse Connection Reversal of phase and neutral at mains Neutral Missing Tamper When neutral is disconnected the board will not be powered During this condition single wire conditions power supply is generated by a CT for powering up the board The board detects this condition and starts recording energy when the load current is 2A or higher Case Tamper f attempt is made to open the meter body the meter logs the date time of meter opening tamper tamper information is displayed on LCD Magnetic Tamper When a magnet comes near to board it pulls an IO low This feature was requested by customer for using in their customized LCD glass This is not displayed in our LCD glass as we don t have any segment free but magnetic tamper feature is present in our solution M nele an Systems Lab amp technical marketing Communication Interface 71 Optical Port IrDA Supported protocol IE
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