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
[ CXEP2337A ]
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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 (±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
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Electricity Metering ICs |
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|
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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