CXEP2338ACXEP2338B计量处理器基于Maxim Integrated的第四代计量体系结构，支持CXEP2338A CXEP2338B系列隔离电流传感产品，可大幅减少组件数量、抗磁干扰和无与伦比的可靠性。CXEP2338A/CXEP2338B将我们的单转换器技术与22位delta sigma ADC、用于核心计量功能的可定制32位计算引擎（CE）以及具有64KB闪存和5KB RAM的用户可编程8051兼容应用处理器（MPU）核心集成在一起外部主机处理器可以直接访问计量功能通过SPI接口，或者通过需要在计量子系统内进行计量数据采集、存储和预处理的应用程序中的嵌入式MPU核心。此外，这些设备还集成了RTC、DIO和UART。一整套ICE和开发工具、编程库和参考设计使仪表能够快速开发和认证，满足世界范围内所有ANSI和IEC电力计量标准CXEP2338A/CXEP2338B在工业温度范围内运行，并具有64针引线（Pb）自由封装。
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
2000:1电流范围内0.1%的典型精度
超过了IEC 62053/ANSI C12.20标准
四象限测光
46-64Hz同一校准线频率范围
相位补偿（±10°）
独立32位计算引擎
64KB闪存，5KB RAM
内置闪存安全
具有闪存编程功能的主机SPI接口
最多四个脉冲输出，脉冲计数
8位MPU（80515），最高可达5 MIPS（可选使用）
全速MPU时钟处于快速模式
多达29个多功能DIO管脚
硬件看门狗定时器（WDT）
用于AMR或其他通信职责的UART
I2C/EEPROM接口
创新的隔离技术（需要配套的CXEP2338A CXEP2338B传感器，也来自Maxim Integrated）消除了电流互感器
具有可选差分模式的四个电流传感器输入
一个电流输入可选择1或8的增益，以支持中性点电流分路
可编程宽度的高速Wh/VARh脉冲输出
数字温度补偿提高系统性能
计量补偿
全功率模式下晶体温度自动补偿的TOU功能精确RTC
停电时电源管理延长电池寿命
浏览器模式（BRN）
睡眠模式（SLP）
两种备用电池模式：
针事件唤醒和计时器唤醒
睡眠模式下为1μA
[ CXEP2338A ]
产品技术资料帮助
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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
0.1% Typical Accuracy Over 2000:1 Current Range
Exceeds IEC 62053/ANSI C12.20 Standards
Four-Quadrant Metering
46-64Hz Line Frequency Range with the Same Calibration
Phase Compensation (±10°)
Independent 32-Bit Compute Engine
64KB Flash, 5KB RAM
Built-In Flash Security
SPI Interface to Host with Flash Program Capability
Up to Four Pulse Outputs with Pulse Count
8-Bit MPU (80515), Up to 5 MIPS (Optional Use)
Full-Speed MPU Clock in Brownout Mode
Up to 29 Multifunction DIO Pins
Hardware Watchdog Timer (WDT)
UART for AMR or Other Communication Duties
I2C/EEPROM Interface
Innovative Isolation Technology (Requires Companion CXEP2338A CXEP2338B Sensor, also from Maxim Integrated) Eliminates Current Transformers
Four Current Sensor Inputs with Selectable Differential Mode
Selectable Gain of 1 or 8 for One Current Input to Support Neutral Current Shunt
High-Speed Wh/VARh Pulse Outputs with Programmable Width
Digital Temperature Compensation Improves System Performance
Metrology Compensation
Accurate RTC for TOU Functions with Automatic Temperature Compensation for Crystal in All Power Modes
Power Management Extends Battery Life During Power Outages
Brownout Mode (BRN)
Sleep Mode (SLP)
Two Battery-Backup Modes:
Wake-Up on Pin Events and Wake-On Timer
1μA in Sleep Mode
应用范围 返回TOP
Three-Phase Residential, Commercial, and Industrial Energy Meters
技术规格书（产品PDF) 返回TOP
需要详细的PDF规格书请扫一扫微信联系我们，还可以获得免费样品以及技术支持！
产品封装图 返回TOP
电路原理图 返回TOP
|
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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