Industrial, Connectivity Electronic Tamper Detection Smart Meter Reference Design Overview The smart grid needs to physically secure all elements that may include smart meters, data concentrators, intelligent electronic devices (IEDs) and secure gateways. Freescale provides a high performance electronic tamper detection smart meter reference design that integrates an ultra low-power Xtrinsic 3-axis tilt sensor used for electronic tamper detection. This reference design has the ability to connect to a ZigBee® network through an internal daughter card. Hence, it can easily become part of the smart grid network. Firmware for this reference design is based on the MQXTM real-time operating system. All standard metering values are displayed on the built-in LCD and selectable via the push button. A variety of communication interfaces are available for remote data collecting, making this an ideal solution for advanced residential metering. Electronic Tamper Detection Smart Meter Reference Design Metrology Key Features • 5(100)A current range, nominal current is 5A, peak current is 100 A • 85V...264V voltage range • 47Hz...63Hz frequency range • Line frequency measurement (for precision zero-cross detection) • Current transformer for current sensing circuit implementation • 4-quadrant measurement • Cost-effective bill of materials (BOM) • Fast Fourier Transform (FFT) DSP • Low-power modes effectively implemented, processing implemented • IEC50470-3 and ANSI C12.20 compatible • Active and reactive energy accuracy: IEC50470-3 Class B, 1% including the use of the built-in RTC (Libattery backed-up) • LCD display, 4x44 segments including charge pump Documentation • Design Reference Manual Electronic Tamper MeterDesign Reference Design Electronic Tamper Detection Detection SmartSmart Meter Reference N RS T Power Supply Battery JTAG SMPS Power Connector Battery 220AC/3.3V Management • FFT-based algorithm for metering applications (AN4255) Current Sensing • Quick Start Guide for MK30ETAMP3PHMTR JTAG RTC ADC16 • MQX Reference Manual • MQX User’s Guide Voltage Sensing • MC1322x Low-Power Node Reference Manual Vbat SCI3 RS232 Freemaster IEC1107 Flex Memory SCIO Temp. Sensor I2C1 ADC16 ADC16 SPI2 TSI IRQ AMI Connector RF/ZigBee I2C0 GPIO UMI Connector LCD Display Tamper Xtrinsic Open Collector kWh kVARh Button Tilt Sensor Pulse Pulse Pulse • Device documentation: MK30X256 • Xtrinsic MMA8491Q tilt sensor SCI5 ADC16 LCD Driver • Device development tools / demo kits: MK30ETAMP3PHMTR Crystal Kinetis K30x MCU 144 LQFP Freescale Technology Optional documentation MK30X256 Microcontroller MMA8491Q 3-Axis Tilt Sensor Block Diagram MMA8491Q Xtrinsic 3-Axis MEMS Tilt Sensor • Up to 100 MHz freq. with 1.25 DMIPS/MHz BYP X • ARM Cortex -M4 Core VDD X ® TM • 256 KB of program flash memory EN X Voltage Regulator Internal OSC Clock Gen. X-Axis Transducer X XOUT X YOUT X Z OUT • 256 KB of FlexNVM and 4KB FlexRAM • 64 KB of SRAM • 16 independently selectable DMA channels • Integrated 16-bit SAR ADCs with PGAs GND X Y-Axis Transducer C to V Converter ADC Embedded Functions X SDA X SCL I2C Z-Axis Transducer • Integrated two 12-bit DACs • Programmable 1.2 V voltage reference • Hi-speed analog comparator with 6-bit DAC • WDOG + External Watchdog Monitor • HW CRC generator circuit (16/32-bit) • External Bus Interface (FlexBus) - for ext. memories, gate-array logic, or an LCD • Communications: CAN, I2C, I2S, SDHC, SPI, UART MC1322x Low Power Node • Full 802.15.4 compliant node Sensing Blocks wireless I/O Pins based on Freescale’s third-generation ZigBee® platform MMA8491Q Xtrinsic 3-Axis MEMS Tilt Sensor Digital Blocks Supporting Blocks Optional • 2.4 GHz radio frequency transceiver • 32-bit ARM7 core-based MCU • Hardware acceleration for both the IEEE 802.15.4 MAC and AES security • Connectivity from simple point-to-point to a complete ZigBee® mesh • Miniature 3 mm x 3 mm QFN 12-pin package o 0.65 mm lead pitch o Visual solder joint inspection capable • Integrated tilt algorithms • Low current consumption: 400 nA at 1 Hz sample rate • Timers: FlexTimers, Programmable delay block (PDB), Programmable interrupt timer (PIT), Low-power timer (LPT), Carrier modulator timer (CMT), Real-Time-Clock • On-board balun and antenna switch in package (valid for 1322x-LPN module) • 14-bit accelerometer data • HMI: touch-sensing, segment LCD • Over-the-air data rate of 250 kbps • 1.95V to 3.6V VDD supply range • 10 low-power operating modes • Typical range (outdoors, line of sight) is 300 meters • 144-pin LQFP or MAPBGA packages • -40°C to +105°C operating temperature range • Fast turn on time • MEMS technology • 99-pin LGA Platform-in-Package (PiP) For more information, visit freescale.com/metering Freescale and the Freescale logo are trademarks of Freescale Semiconductor, Inc., Reg. U.S. Pat. & Tm. Off. ARM is a registered trademark of ARM Limited. Cortex-M4 is a trademark of ARM Limited. All other product or service names are the property of their respective owners. © 2012 Freescale Semiconductor, Inc. Document Number: TAMPERMTRFS REV 0