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E-meter single-phase combo solution

E-meter single-phase combo solution

Product catalog summary

Overview: The document outlines a single-phase electricity meter solution developed by STMicroelectronics, featuring the STM8L152/162 microcontroller and the STPM10 metrology IC. This solution is designed for accurate energy measurement and efficient data processing.

Key Components:

STM8L152/162 Microcontroller: Offers low power consumption with four ultra-low power modes, advanced security features, and enhanced analog capabilities. It supports various communication interfaces and is equipped with a true EEPROM and a free touch-sense library.
STPM10 Metrology IC: Provides precise measurement of active, reactive, and apparent energies, as well as voltage and current. It supports fast digital calibration and tamperproof features through neutral current monitoring.

Specifications:

Rated Voltage: 240 Vac
Rated Current: 5 A (typical) / 30 A (maximum)
Operating Range: 0.6 Vb to 1.2 Vb
Accuracy: Class 1.0
LCD Display: 6 + 1 digits
kWh Granularity: 0.01 kWh
Tamper Protection: Reverse current, neutral missing, cover opening
Communication: IrDA, optical
Power Outage Backup: Dual battery (primary and RTC backup)

Benefits:

Cost-effective and scalable solution with platform compatibility.
Accurate measurement ensures secure billing and data safety.
Sensor independence allows for greater flexibility.
Reduces production time due to efficient calibration processes.

Target Applications: Primarily designed for single-phase electricity meters, with potential for expansion using additional peripherals and connectivity options.

Additional Information: An evaluation board is available to demonstrate the performance of this solution, complete with hardware schematics, layout, and software code to facilitate development.

Catalog excerpts

E-meter single-phase combo solution Features accurate energy measurement and efficient data processing

Open the catalog to page 1

STM8L152/162 + STPM10: Basis of modular plug-and-measure singlephase electricity meter solution The STM8L152/162 and STPM10 chips from STMicroelectronics are designed to form the basis of a cost-effective single-phase electricity meter solution. The STPM10 metrology IC accurately measures the energy, voltage and current of the target. The STM8L152/162 8-bit microcontroller efficiently and securely stores, displays, controls and transfers the measurements. The scalability of this platform (extendable with the STM32L, STPMx) and the flexible connectivity (SPI, External memories, UART, I2C) gives...

Open the catalog to page 2

STM8L152/162 64-Kbyte Flash memory 4-Kbyte SRAM System Power supply 1.8 V regulator POR/PDR/PVD/BOR Xtal oscillator 32 kHz + 1~16 MHz Internal RC oscillators 38 kHz + 16 MHz Clock control RTC/AWU 2x watchdogs (independent and window) 41/54/68 I/Os I²C Nested vector interrupt controller (NVIC) SWIM debug module Control 1x 16-bit PWM Synchronized AC timer 3x 16-bit timers Touch sensing Charge-transfer driver up to 16 channels Analog 2x 12-bit DAC 12-bit ADC 25 channels 2x comparators Display Encryption AES (128 bits)* Temperature sensor Linear Vregs 56-bit configurators Energy to frequency converters...

Open the catalog to page 3

An evaluation board based on the STM8L152/162 and STPM10 has been developed by ST to demonstrate the performance of the combo solution. The HW schematics and layout, plus SW code are available for customers to make their e-meter development easier. QQ QQ QQ QQ QQ QQ QQ QQ QQ QQ Rated voltage: 240 Vac Rated current: 5 A (Ityp) / 30 A (Imax) Operating range: 0.6 Vb to 1.2 Vb Accuracy: Class 1.0 LCD Display: 6 + 1 digits kWh granularity: 0.01 kWh Tamper protection: reverse current, neutral missing, cover opening Sensor: CT and/or shunt Communication: IrDA, optical Power outage backup: dual battery...

Open the catalog to page 4

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