CXEP2348低功耗的单相片上能量测量系统七个定时器通道智能卡接口50段6公共LCD接口内置密码模块确保通信安全差动电流输入有功无功电压和电流的总谐波

CXEP2348是一个低功耗的单相片上能量测量系统（SoC），而CXEP2348是一个低功耗的多相能量测量系统。基于ARM Cortex-M3内核，这些设备可以运行现代操作系统，监控和报告能源使用情况，并实现通信堆栈。除了主管理核心之外，这些设备还包括执行计量功能的CPU核心和用于精确能量监视和测量所需的DSP相关任务的离散计算引擎、最后周期分析和用于计算所选信道的频谱的FFT功能。DSP核心在寄存器中提供以下能量和功率测量功能：
每个相位和总和的有功电能和功率
每个相位和总和的视在能量和功率
每个相位和总和的无功能量和功率
●线路电压和电流均方根值
●中性点电流RMS
●电流矢量和，三相加中性点
●线路频率
●基频
●有功、无功、电压和电流的总谐波
●安全特性
SoC集成和独特的隔离技术在不牺牲性能的前提下降低了BOM成本
•在高达5000:1的动态范围内，电能小时精度为0.1%
•采样频率可配置；∑Δ采样率可配置高达9.83MHz•灵活的模拟输入配置支持电流互感器、分路器或Rogowski线圈
•2.7V至3.6V工作电压
•单个32.768kHz晶体提供所有操作时钟
●ARM Core M3应用处理器支持快速系统开发
•1MB闪存
•64KB代码RAM
•64KB系统RAM
•六个UART通道
•七个定时器通道
•I2C主/从外设
•三个SPI外围设备
•智能卡接口
●特点
•64KB程序RAM
•8KB数据RAM
•16KB页RAM
•四米脉冲输出（可配置）
•两个I2C主/从外设
•SPI主/从外设
•50段，6公共LCD接口
●安全功能减少或消除常见的安全威胁
•内置密码模块确保通信安全
•篡改检测输入确保记录并报告试图违反案例的行为
•两个独立的核心确保符合所有当前和未来的安全要求
●模拟前端
•七个（CXEP2348）或四个（CXEP2347）24位∑ΔA/D转换器
•三个（CXEP2348）或两个（CXEP2347）电压输入
•四个（CXEP2348）或三个（CXEP2347）差动电流输入

目录

1.产品概述       2.产品特点     

3.应用范围       4.技术规格书下载（PDF文档）

5.产品封装       6.电路原理图  

7.相关产品

   产品概述 返回TOP

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The CXEP2347 is a low-power, single-phase energy measurement system-on-chip (SoC), and the CXEP2348 is a low-power polyphase energy measurement SoC. Based on an ARM Cortex-M3 core, the devices can run modern operating systems that monitor and report energy usage and implement communications stacks. In addition to the main administrative core, the devices include a CPU core to perform metering functions and a discrete compute engine for the DSP related tasks necessary for accurate energy monitoring and measurement, last cycle analysis, and FFT functions to compute the frequency spectra of the selected channel. The DSP core provides the following energy and power measurement features in registers: 

● Active energy and power per phase and sum 

● Apparent energy and power per phase and sum 

● Reactive energy and power per phase and sum 

● Line voltage and current RMS 

● Neutral current RMS 

● Current vector sum, three-phase plus neutral 

● Line frequency 

● Fundamental frequency 

● Total harmonics of active power, reactive power, voltage, and currents 

● Security features

   产品特点 返回TOP

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SoC Integration and Unique Isolation Technique Reduces BOM Cost Without Sacrificing Performance 

• Watt-Hour Accuracy of 0.1% at Up to 5,000:1 Dynamic Range 

• Sample Frequency Configurable; ΣΔ Sample Rate Configurable Up to 9.83MHz • Flexible Analog Input Configuration Support Current Transformers, Shunts, or Rogowski Coils 

• 2.7V to 3.6V Operating Voltage 

• Single 32.768kHz Crystal Provides All Operating Clocks

● ARM Core M3 Application Processor Enables Rapid System Development 

• 1MB Flash 

• 64KB Code RAM 

• 64KB System RAM 

• Six UART Channels 

• Seven Timer Channels 

• I2C Master/Slave Peripheral 

• Three SPI Peripherals 

• Smart Card Interface 

• 64KB Program RAM 

• 8KB Data RAM 

• 16KB Page RAM 

• Four Meter Pulse Outputs (Configurable) 

• Two I2C Master/Slave Peripherals 

• SPI Master/Slave Peripheral 

• 50-Segment, 6-Common LCD Interface 

● Security Features Reduce or Eliminate Common Security Threats 

• Built-In Cryptographic Modules Ensure Communications Are Kept Secure 

• Tamper Detect Inputs Ensure Attempts to Breach the Case Are Recorded and Reported 

• Two Independent Cores Ensures Compliance with All Current and Future Security Requirements 

● Analog Front-End 

• Seven (CXEP2348) or Four (CXEP2347) 24-Bit ΣΔ A/D Converters 

• Three (CXEP2348) or Two (CXEP2347) Voltage Inputs 

• Four (CXEP2348) or Three (CXEP2347) Differential Current Inputs

   应用范围 返回TOP

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● Smart and Secure Single-Phase Energy Meters 

● Smart and Secure Polyphase Energy Meters 

● MID/WELMEC-Compliant Meters

   技术规格书（产品PDF) 返回TOP 

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产品封装图 返回TOP

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电路原理图 返回TOP

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Electricity Metering ICs
Part Number	Phase	Internal  Flash(KB)	Internal  RAM(KB)	Analog Input	Sensor Inputs   (Current+Voltage)	MCU MIPS	RTC	LCD Driver Pixels(max)	GPIO	UARTs
CXEP2324	3P
CXEP2325	3P
CXEP2326	1P
CXEP2327	3P
CXEP2328	1P	64	7	Singleend	2SE + 1	5	Yes	128 (32x4)	12	2
CXEP2328A	1P	64	7	Singleend	2SE + 1	5	Yes	128 (32x4)	12	2
CXEP2329	3P	64	7	Singleend	3SE + 3	5	Yes	168 (42x4)	22	2
CXEP2329A	3P	64	7	Singleend	3SE + 3	5	Yes	168 (42x4)	22	2
CXEP2330	3P	64	7	Singleend	3SE + 3	5	Yes		8	1
CXEP2331A	1P/2P	128	4	Singleend	2SE + 2	10	Yes	156 (39x4)	22	2
CXEP2331B	1P/2P	256	4	Singleend	2SE + 2	10	Yes	156 (39x4)	22	2
CXEP2332A	1P/2P	128	4	Differential	2D + 2	10	Yes	268 (67x4)	43	2
CXEP2332B	1P/2P	256	4	Differential	2D + 2	10	Yes	268 (67x4)	43	2
CXEP2333A	3P	128	4	Differential	4D + 3	10	Yes	228 (57x4)	39	2
CXEP2333B	3P	128	4	Differential	4D + 3	10	Yes	228 (57x4)	39	2
CXEP2334A	3P	128	4	Differential	4D + 3	10	Yes	300 (75x4)	52	2
CXEP2334B	3P	256	4	Differential	4D + 3	10	Yes	300 (75x4)	52	2
CXEP2335A	1P	32	3	Differential	2D + 1	5	Yes	222 (37x6)	30	2
CXEP2335B	1P	64	5	Differential	2D + 1	5	Yes	222 (37x6)	30	2
CXEP2335C	1P	128	5	Differential	2D + 1	5	Yes	222 (37x6)	30	2
CXEP2336A	1P/2P	64	5	Differential	2D + 2	5	Yes	336 (56x6)	51	2
CXEP2336B	1P/2P	128	5	Differential	2D + 2	5	Yes	336 (56x6)	51	2
CXEP2337A	3P	64	5	Differential	4D + 3	5	Yes	336 (56x6)	51	2
CXEP2337B	3P	128	5	Differential	4D + 3	5	Yes	336 (56x6)	51	2
CXEP2337C	3P	128	5	Differential	4D + 3	5	Yes	336 (56x6)	51	2
CXEP2337D	3P	64	5	Differential	4D + 3	5	Yes	336 (56x6)	51	2
CXEP2338A	3P	64	5	Differential	4D + 3	5	Yes		29	1
CXEP2338B	3P	64	5	Differential	4D + 3	5	Yes		29	1
CXEP2339	1P
CXEP2340	1P ,3P	0	0	Differential	2D			300(50x6)	70	0
CXEP2341	1P/2P	64	8	Differential	2D + 2	10	Yes	156(39x4)  190(38X5) 222(37x6)	39	3
CXEP2342	1P/2P	128	8	Differential	2D + 2	10	Yes	156(39x4)  190(38X5) 222(37x6)	39	3
CXEP2343	1P	256	48	Differential	4D + 3SE	20	Yes	160(40x4)  228(38x6) 288(36x8)	88	5
CXEP2344	1P	512	48	Differential	4D + 3SE	20	Yes	160(40x4)  228(38x6)  288(36x8)	88	5
CXEP2345	3P	256	48	Differential	4D + 3SE	20	Yes	160(40x4) 228(38x6) 288(36x8)	88	5
CXEP2346	3P	512	48	Differential	4D + 3SE	20	Yes	160(40x4)  228(38x6)  288(36x8)	88	5
CXEP2347	1P  1P/2P	1024	128	Differential	2D + 2	54	Yes	300(50x6)	70	7
CXEP2348	3P	1024	128	Differential	4D + 3SE	54	Yes	300(50x6)	70	8