CXEP2335A CXEP2335B CXEP2335C设备支持与一系列隔离传感器的可选接口，这些传感器可降低BOM成本、抗磁干扰和增强可靠性。其他功能包括SPI接口、高级电源管理、活动模式和电池模式下的超低功耗操作、3/5KB共享RAM和32/64/128KB闪存，可在仪表操作期间使用代码和/或数据在现场编程，以及每个SEG驱动器管脚最多可驱动六个LCD段的能力。高处理率和采样率加上差分输入为住宅电表提供了一个强大的计量平台。CXEP2335A CXEP2335B CXEP2335C系列在工业温度范围内运行，有64针（CXEP2335A CXEP2335B CXEP2335C）和100针LQFP封装。CXEP2335A CXEP2335B CXEP2335C是第四代单相计量SOC，具有5MHz 8051兼容的MPU核心、低功耗RTC和改进的温度补偿，闪存和LCD驱动程序。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）的经验证的单转换器技术，支持使用很少的外部组件的广泛计量应用。一整套代码开发工具、演示代码和参考通过设计，可以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
•32KB闪存，3KB RAM（CXEP2335A）
•64KB闪存，5KB RAM（CXEP2335B）
•128KB闪存，5KB RAM（CXEP2335C）
•内置闪存安全
•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
●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）
•唤醒
-启动Pin事件并唤醒
-定时
•睡眠模式下为1μA
[ CXEP2335A ]
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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
• 32KB Flash, 3KB RAM (CXEP2335A)
• 64KB Flash, 5KB RAM (CXEP2335B)
• 128KB Flash, 5KB RAM (CXEP2335C)
• Built-In Flash Security
• 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
● 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
Single-Phase Residential, Commercial, and Industrial Energy 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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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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