EM773 datasheet(1/45 Pages) NXP

Part #	EM773

Description	Energy metering IC; up to 32 kB flash and 8 kB SRAM

PDF	45 Pages

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Manufacturer	NXP [NXP Semiconductors]

Direct Link	http://www.nxp.com

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1.

General description

The 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.

2.

Features and benefits

System:

ARM Cortex-M0 processor, running at frequencies of up to 48 MHz.

ARM Cortex-M0 built-in Nested Vectored Interrupt Controller (NVIC).

Serial Wire Debug.

System tick timer.

Memory:

32 kB on-chip flash programming memory.

8 kB 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 (20 mA) on one pin.

High-current sink drivers (20 mA) 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.

EM773

Energy metering IC; up to 32 kB flash and 8 kB SRAM

Rev. 1 — 1 September 2010

Objective data sheet

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