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Home » NEWEST Products » New by Manufacturer » NXP Semiconductors » NXP EM773 Energy Metering Development Kit
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NXP Semiconductors EM773
Energy Metering Development Kit

NXP Semiconductors EM773 Energy Metering Development Kit includes a plug meter with EM773 and OL2381, a USB transceiver with LPC1343 and OL2381, and Wireless M-Bus S1 Mode software. The NXP Semiconductors EM773 is an ARM Cortex-M0 based, low-cost 32-bit energy metering IC, designed for 8/16-bit smart metering applications. The EM773 offers programmability and on-chip metrology functionality combined with a low power, simple instruction set, and memory addressing with reduced code size compared to existing 8/16-bit architectures. The EM773 operates at CPU frequencies of up to 48MHz. The peripheral complement of the EM773 includes up to 32kB of flash memory, up to 8kB of data memory, one Fast-mode Plus I2C-bus interface, one RS-485/EIA-485 UART, one SPI interface with SSP features, three general purpose counter/timers, up to 25 general purpose I/O pins, and a metrology engine for energy measurement.

EM773 Features & Benefits
  • System:
    • ARM Cortex-M0 processor, running at frequencies of up to 48MHz
    • ARM Cortex-M0 built-in Nested Vectored Interrupt Controller (NVIC)
    • Serial wire debug
    • System tick timer
  • Memory:
    • 32kB on-chip flash programming memory
    • 8kB SRAM
    • In-System Programming (ISP) and In-Application Programming (IAP) via on-chip bootloader software
  • Digital peripherals:
    • Up to 25 General Purpose I/O (GPIO) pins with configurable pull-up/ pull-down resistors
    • GPIO pins can be used as edge and level sensitive interrupt sources
    • High-current output driver (20mA) on one pin
    • High-current sink drivers (20mA) on two I2C-bus pins in Fast-mode Plus
    • Three general purpose counter/timers with a total of two capture inputs and 10 match outputs
    • Programmable WatchDog Timer (WDT)
  • Analog peripherals:
    • Metrology engine for smart metering with two current inputs and a voltage input

  • Serial interfaces:
    • UART with fractional baud rate generation, internal FIFO, and RS-485 support
    • One SPI controller with SSP features and with FIFO and multi-protocol capabilities
    • I2C-bus interface supporting full I2C-bus specification and Fast-mode Plus with a data rate of 1Mbit/s with multiple address recognition and monitor mode
  • Clock generation:
    • 12MHz internal RC oscillator trimmed to 1% accuracy that can optionally be used as a system clock
    • Crystal oscillator with an operating range of 1 to 25MHz
    • Programmable watchdog oscillator with a frequency range of 7.8kHz to 1.8MHz
    • PLL allows CPU operation up to the maximum CPU rate without the need for a high-frequency crystal; may be run from the system oscillator or the internal RC oscillator
    • Clock output function with divider that can reflect the system oscillator clock, IRC clock, CPU clock, and the Watchdog clock
  • Power control:
    • Three reduced power modes: Sleep, Deep-sleep, and Deep power-down
    • Integrated PMU (Power Management Unit) to minimize power consumption during reduced power modes
    • Processor wake-up from Deep-sleep mode via a dedicated start logic using up to 13 of the functional pins
    • Power-On Reset (POR)
    • Brownout detect with four separate thresholds for interrupt and forced reset
  • Unique device serial number for identification
  • Single 3.3V power supply (1.8 to 3.6V)
  • Available as 33-pin HVQFN package
Smart Metering

Smart Metering
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