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EM773 Energy Metering IC


NXP Semiconductors EM773 is designed for 8/16-bit smart metering applications


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 48 MHz. The peripheral complement of the EM773 includes up to 32 kB of flash memory, up to 8 kB 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. NXP's EM777 IC

Features
  • 32 kB on-chip flash programming memory
  • 8 kB SRAM
  • ARM Cortex-M0 built-in Nested Vectored Interrupt Controller (NVIC)
  • ARM Cortex-M0 processor, running at frequencies of up to 48 MHz
  • Available as 33-pin HVQFN package
  • GPIO pins can be used as edge and level sensitive interrupt sources
  • High-current output driver (20 mA) on one pin
  • High-current sink drivers (20 mA) on two I²C-bus pins in Fast-mode Plus
  • In-System Programming (ISP) and In-Application Programming (IAP)
  • Metrology Engine for Smart Metering with two current inputs and a voltage input
  • Serial Wire Debug
  • Single 3.3 V power supply (1.8 V to 3.6 V)
  • System tick timer
  • Three reduced power modes: Sleep, Deep-sleep, and Deep power-down
  • Unique device serial number for identification
  • Up to 25 General Purpose I/O (GPIO) pins

Digi-Key P/N Manufacturer P/N Description  
568-5213-ND EM773FHN33,551 IC ENERGY METER ARM 32VQFN Datasheet

Eval Board's
Digi-Key P/N Manufacturer P/N Description
568-6680-ND OM13005,598 BOARD EVAL EM773 METER US PLUG
568-6681-ND OM13006,598 BOARD EVAL EM773 METER EU PLUG