CXEP2337A CXEP2337B CXEP2337C CXEP2337D闪存编程功能的SPI接口数字温度补偿提高系统性能带调制的红外LED驱动器相同校准的46-64Hz线频率22位delta-sigma ADC多个模拟输入数字温度补偿精确电压基准和32位计算引擎CE

CXEP2337A CXEP2337B CXEP2337C CXEP2337D是第四代单相计量SOC，具有5MHz 8051兼容的MPU内核、低功耗RTC（具有改进的温度补偿）、闪存和LCD驱动器。经验证的单转换器技术，具有22位delta-sigma ADC、多个模拟输入、数字温度补偿、精确电压基准和32位计算引擎（CE），可在极少外部组件的情况下支持广泛的计量应用
CXEP2337A CXEP2337B CXEP2337C CXEP2337D提供七个传感器输入，并为一系列可降低BOM成本、抗磁干扰和增强可靠性的隔离传感器提供可选支持。该集成电路具有超低功耗工作在有源和电池模式，5KB共享RAM和64KB（CXEP2337A）或128KB（CXEP2337C）的闪存，可编程与代码和/或数据在仪表操作。一整套代码开发工具，演示代码，参考设计能够快速开发和认证符合全球所有ANSI和IEC电能计量标准的电表，检查可用性，或获取早期非T版本CXEP2337A CXEP2337B CXEP2337C CXEP2337D的数据表副本。

●SoC集成和独特的隔离技术在不牺牲性能的前提下降低了物料清单成本
•2000:1电流范围内0.1%的典型精度
•超过IEC 62053/ANSI C12.20标准
•四象限计量
•具有相同校准的46-64Hz线频率范围
•相位补偿（±10o）
•独立的32位计算引擎
•64KB闪存，5KB RAM（CXEP2337A/CXEP2337D）
•128KB闪存，5KB RAM（CXEP2337C/CXEP2337B）
•内置闪存安全
•具有闪存编程功能的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
•全速MPU时钟处于浏览模式
•LCD驱动程序允许多达6个公共/多达56个引脚
•多达51个多功能DIO管脚
•硬件看门狗定时器（WDT）
•两个用于红外和AMR的UART
•带调制的红外LED驱动器
•I2C/EEPROM接口
●创新的隔离技术（使用配套传感器）消除了电流互感器
•四个电流传感器输入，带可选差动
•一个电流输入的可选增益为1或8，以支持中性点电流分路
•具有可编程宽度的高速Wh/VARh脉冲输出
●数字温度补偿提高系统性能
•计量补偿
•在所有功率模式下，晶闸管具有自动温度补偿功能的精确RTC
●电源管理延长停电期间的电池寿命
•三种备用电池模式
-浏览器模式（BRN）
-LCD模式（LCD）
-睡眠模式（SLP）
•针事件唤醒和计时器唤醒
•睡眠模式下为1μA

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

---

The CXEP2337A CXEP2337B CXEP2337C CXEP2337D are 4th-generation single-phase metering SoCs with a 5MHz 8051-compatible MPU core, low-power RTC with improved temperature compensation, flash memory, and LCD driver. Proven Single Converter Technology  with a 22-bit delta-sigma ADC, multiple analog inputs, digital temperature compensation, precision voltage reference, and a 32-bit computation engine (CE) supports a wide range of metering applications with very few external components.The

CXEP2337A CXEP2337B CXEP2337C CXEP2337D  provides seven sensor inputs and offers opptional support for the  series of isolated sensors that offer BOM cost reduction, immunity to magnetic tamper, and enhanced reliability. The ICs feature ultra-low-power operation in active and battery modes, 5KB shared RAM, and 64KB (CXEP2337A) or 128KB (CXEP2337C) of flash memory, which can be programmed with code and/or data during meter operation.A complete array of code development tools, demonstration code, and reference designs enable rapid development and certification of meters that meet all ANSI and IEC electricity metering standards worldwide, check availability, or obtain copies of data sheets for earlier non-T versions of the CXEP2337A CXEP2337B CXEP2337C CXEP2337D.

   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 (±10o) 

• Independent 32-Bit Compute Engine 

• 64KB Flash, 5KB RAM (CXEP2337A/CXEP2337D) 

• 128KB Flash, 5KB RAM (CXEP2337C/CXEP2337B) 

• Built-In Flash Security 

• SPI Interface with Flash Program Capability 

• Up to Four Pulse Outputs with Pulse Count 

• 8-Bit MPU (80515), Up to 5 MIPS 

• Full-Speed MPU Clock in Brownout Mode 

• LCD Driver Allows Up to 6 Commons/Up to 56 Pins 

• Up to 51 Multifunction DIO Pins 

• Hardware Watchdog Timer (WDT) 

• Two UARTs for IR and AMR 

• IR LED Driver with Modulation 

• I2C/ EEPROM Interface

● Innovative Isolation Technology (Uses Companion  Sensor) Eliminates Current Transformers 

• Four Current Sensor Inputs with Selectable Differential 

• 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 

• Three Battery-Backup Modes 

- Brownout Mode (BRN) 

- LCD Mode (LCD) 

- Sleep Mode (SLP) 

• Wake-Up on Pin Events and Wake-On Timer 

• 1μA in Sleep Mode

   应用范围 返回TOP

---

Residential, Commercial, and Industrial Energy Meters

High-End Residential Meters, AMR/AMI, and TOU

   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

---

相关芯片选择指南 返回TOP                             更多同类产品......

---

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