参数资料
| 型号： | EM773FHN33,551 |
| 厂商： | NXP Semiconductors |
| 文件页数： | 5/51页 |
| 文件大小： | 0K |
| 描述： | IC ENERGY METER ARM 32VQFN |
| 其它有关文件： | EM773 Energy Metering IC Training |
| 特色产品： | EM773 Energy Metering IC |
| 标准包装： | 260 |
| 核心处理器： | ARM? Cortex?-M0 |
| 芯体尺寸： | 32-位 |
| 速度： | 48MHz |
| 连通性： | I²C，SPI，UART/USART |
| 外围设备： | 欠压检测/复位，POR，WDT |
| 输入/输出数： | 25 |
| 程序存储器容量： | 32KB（32K x 8） |
| 程序存储器类型： | 闪存 |
| RAM 容量： | 8K x 8 |
| 电压 - 电源 (Vcc/Vdd)： | 1.8 V ~ 3.6 V |
| 振荡器型： | 内部 |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 32-VQFN 裸露焊盘 |
| 包装： | 托盘 |
| 配用： | 568-6681-ND - BOARD EVAL EM773 METER EU PLUG 568-6680-ND - BOARD EVAL EM773 METER US PLUG |
| 其它名称： | 568-5213 |
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EM773
All information provided in this document is subject to legal disclaimers.
NXP B.V. 2012. All rights reserved.
Product data sheet
Rev. 2 — 3 January 2012
13 of 51
NXP Semiconductors
EM773
Energy metering IC
receivers can operate in either master or slave mode, depending on whether the chip has
to initiate a data transfer or is only addressed. The I2C is a multi-master bus and can be
controlled by more than one bus master connected to it.
7.10.1 Features
The I2C-interface is a standard I2C-bus compliant interface with open-drain pins. The
I2C-bus interface also supports Fast-mode Plus with bit rates up to 1 Mbit/s.
Easy to configure as master, slave, or master/slave.
Programmable clocks allow versatile rate control.
Bidirectional data transfer between masters and slaves.
Multi-master bus (no central master).
Arbitration between simultaneously transmitting masters without corruption of serial
data on the bus.
Serial clock synchronization allows devices with different bit rates to communicate via
one serial bus.
Serial clock synchronization can be used as a handshake mechanism to suspend and
resume serial transfer.
The I2C-bus can be used for test and diagnostic purposes.
The I2C-bus controller supports multiple address recognition and a bus monitor mode.
7.11 Metrology engine
The EM773 contains a metrology engine designed to collect voltage and current inputs to
calculate the active power, reactive power, apparent power and power factor of a load.
The purpose of the metrology engine is for non-billing applications such as plug meters,
smart appliances, industrial and consumer sub-meters, etc.
7.11.1 Features
1 % accurate for scalable input sources up to 230 V/50 Hz/16 A and
110 V/60 Hz/20 A while maintaining this accuracy with a factor of 1 to 400 down from
this maximum current.
Automatically calculates active power in W, reactive power in VAr, apparent power in
VA, power factor ratio, Vrms and Irms without ARM CPU intervention.
Standard API for initializing, starting, stopping and reading data from the metrology
engine using the ARM Cortex M0.
7.12 General purpose external event counter/timers
The EM773 includes two 32-bit counter/timers and one 16-bit counter/timer. The
counter/timer is designed to count cycles of the system derived clock. It can optionally
generate interrupts or perform other actions at specified timer values, based on four
match registers. Each counter/timer also includes one capture input to trap the timer value
when an input signal transitions, optionally generating an interrupt.
7.12.1 Features
A 32-bit/16-bit timer/counter with a programmable 32-bit/16-bit prescaler.
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