CXEP2347 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
[ CXEP2347 ]
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产品概述 返回TOP
产品特点 返回TOP
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
● Features
• 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
● Smart and Secure Single-Phase Energy Meters
● Smart and Secure Polyphase Energy Meters
● MID/WELMEC-Compliant Meters
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产品封装图 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 |
|
3P |
||||||||||
|
3P |
||||||||||
|
1P |
||||||||||
|
3P |
||||||||||
|
1P |
64 |
7 |
Singleend |
2SE + 1 |
5 |
Yes |
128 (32x4) |
12 |
2 |
|
|
1P |
64 |
7 |
Singleend |
2SE + 1 |
5 |
Yes |
128 (32x4) |
12 |
2 |
|
|
3P |
64 |
7 |
Singleend |
3SE + 3 |
5 |
Yes |
168 (42x4) |
22 |
2 |
|
|
3P |
64 |
7 |
Singleend |
3SE + 3 |
5 |
Yes |
168 (42x4) |
22 |
2 |
|
|
3P |
64 |
7 |
Singleend |
3SE + 3 |
5 |
Yes |
8 |
1 |
||
|
1P/2P |
128 |
4 |
Singleend |
2SE + 2 |
10 |
Yes |
156 (39x4) |
22 |
2 |
|
|
1P/2P |
256 |
4 |
Singleend |
2SE + 2 |
10 |
Yes |
156 (39x4) |
22 |
2 |
|
|
1P/2P |
128 |
4 |
Differential |
2D + 2 |
10 |
Yes |
268 (67x4) |
43 |
2 |
|
|
1P/2P |
256 |
4 |
Differential |
2D + 2 |
10 |
Yes |
268 (67x4) |
43 |
2 |
|
|
3P |
128 |
4 |
Differential |
4D + 3 |
10 |
Yes |
228 (57x4) |
39 |
2 |
|
|
3P |
128 |
4 |
Differential |
4D + 3 |
10 |
Yes |
228 (57x4) |
39 |
2 |
|
|
3P |
128 |
4 |
Differential |
4D + 3 |
10 |
Yes |
300 (75x4) |
52 |
2 |
|
|
3P |
256 |
4 |
Differential |
4D + 3 |
10 |
Yes |
300 (75x4) |
52 |
2 |
|
|
1P |
32 |
3 |
Differential |
2D + 1 |
5 |
Yes |
222 (37x6) |
30 |
2 |
|
|
1P |
64 |
5 |
Differential |
2D + 1 |
5 |
Yes |
222 (37x6) |
30 |
2 |
|
|
1P |
128 |
5 |
Differential |
2D + 1 |
5 |
Yes |
222 (37x6) |
30 |
2 |
|
|
1P/2P |
64 |
5 |
Differential |
2D + 2 |
5 |
Yes |
336 (56x6) |
51 |
2 |
|
|
1P/2P |
128 |
5 |
Differential |
2D + 2 |
5 |
Yes |
336 (56x6) |
51 |
2 |
|
|
3P |
64 |
5 |
Differential |
4D + 3 |
5 |
Yes |
336 (56x6) |
51 |
2 |
|
|
3P |
128 |
5 |
Differential |
4D + 3 |
5 |
Yes |
336 (56x6) |
51 |
2 |
|
|
3P |
128 |
5 |
Differential |
4D + 3 |
5 |
Yes |
336 (56x6) |
51 |
2 |
|
|
3P |
64 |
5 |
Differential |
4D + 3 |
5 |
Yes |
336 (56x6) |
51 |
2 |
|
|
3P |
64 |
5 |
Differential |
4D + 3 |
5 |
Yes |
29 |
1 |
||
|
3P |
64 |
5 |
Differential |
4D + 3 |
5 |
Yes |
29 |
1 |
||
|
1P |
||||||||||
|
1P ,3P |
0 |
0 |
Differential |
2D |
300(50x6) |
70 |
0 |
|||
|
1P/2P |
64 |
8 |
Differential |
2D + 2 |
10 |
Yes |
156(39x4) 190(38X5) 222(37x6) |
39 |
3 |
|
|
1P/2P |
128 |
8 |
Differential |
2D + 2 |
10 |
Yes |
156(39x4) 190(38X5) 222(37x6) |
39 |
3 |
|
|
1P |
256 |
48 |
Differential |
4D + 3SE |
20 |
Yes |
160(40x4) 228(38x6) 288(36x8) |
88 |
5 |
|
|
1P |
512 |
48 |
Differential |
4D + 3SE |
20 |
Yes |
160(40x4) 228(38x6) 288(36x8) |
88 |
5 |
|
|
3P |
256 |
48 |
Differential |
4D + 3SE |
20 |
Yes |
160(40x4) 228(38x6) 288(36x8) |
88 |
5 |
|
|
3P |
512 |
48 |
Differential |
4D + 3SE |
20 |
Yes |
160(40x4) 228(38x6) 288(36x8) |
88 |
5 |
|
|
1P 1P/2P |
1024 |
128 |
Differential |
2D + 2 |
54 |
Yes |
300(50x6) |
70 |
7 |
|
|
3P |
1024 |
128 |
Differential |
4D + 3SE |
54 |
Yes |
300(50x6) |
70 |
8 |
|
|
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