CXEP2331A 整个系统采用32kHz的晶体时基，并为RAM和RTC提供内部电池备份支持，进一步降低了系统成本。该集成电路支持2线、3线和4线单相和双相住宅计量以及篡改检测机制。CXEP2331为两个电流通道和两个单端电压输入提供单端输入。CXEP2331有两个差分电流输入和三个单端电压输入。CXEP2331/32是高度集成的SoC设备，具有MPU核、RTC、闪存和LCD驱动器。专利的单转换器技术具有22位delta-sigma ADC、4个模拟输入、数字温度补偿、精确电压基准、电池电压监视器和32位计算引擎（CE），支持多种住宅计量应用，很少有低成本的外部组件。最大的设计灵活性是由多个UART、I2C，多达21个DIO管脚和系统内可编程闪存，可在运行中使用数据或应用程序代码进行更新。一整套ICE和开发工具、编程库和参考设计使符合全球电力计量标准的分时、自动抄表和预付费电表得以快速开发和认证。
在2000:1电流范围内，Wh精度<0.1%
超过IEC62053/ANSI C12.20标准
四个传感器输入
低抖动Wh和VARh加上两个附加脉冲测试输出（总共4个，最大10 kHz），脉冲计数
四象限计量
篡改检测（CT、Rogowski或分路中性电流、磁篡改输入）
RTC的线路频率计数
数字温度补偿
相位A和B的弧垂检测
独立的32位计算引擎
具有相同校准的46-64 Hz线频率范围。相位补偿（7度）
三种电池模式，带计时器或按钮唤醒：无电模式（52μA典型）、LCD模式（21μA典型、DAC激活）睡眠模式（0.7μA典型）
电网断电时的能量显示
在3.3 V、MPU时钟频率614 kHz时，39 mW典型功耗
具有3360 Hz或2520 Hz采样率的22位增量西格玛ADC
·8位MPU（80515），每条指令1个时钟周期，最大10 MHz，带集成ICE进行调试
带时钟速率调整寄存器的TOU功能的RTC
硬件看门狗定时器、电源故障监视器
带4个公共段驱动程序的LCD驱动程序：高达156（CXEP2331A/B）或268像素（CXEP2331A/B）
最多22个（CXEP2331A/B）或43个（CXEP2331A/B）通用I/O引脚。与5 V输入兼容的数字I/O引脚
32 kHz时基
高速从SPI接口到数据RAM
两个用于IR和AMR的uart，带调制的IR驱动器
带安全和系统内程序更新的闪存：128 KB（CXEP2331A/32A）256 KB（CXEP2331B/32B）
4kb微处理器x内存
工业温度范围
用于CXEP2331A/B的68针QFN封装可兼容，用于CXEP2331A/B的100针LQFP封装，无铅
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[ CXEP2331A ]
目录
7.相关产品
产品概述 返回TOP
A 32kHz crystal time base for the entire system and internal battery-backup support for RAM and RTC further reduce system cost. The IC supports 2-wire, 3-wire, and 4-wire single-phase and dual-phase residential metering along with tamper-detection mechanisms. The CXEP2331 offers single-ended inputs for two current channels and two single-ended voltage inputs. The CXEP2331 have two differential current inputs and three single-ended voltage inputs.The CXEP2331/32 are highly integrated SoC devices with an MPU core, RTC, flash, and LCD driver. The patented Single Converter Technology with a 22-bit, delta-sigma ADC; four analog inputs; digital temperature compensation; precision voltage reference; battery voltage monitor; and 32-bit computation engine (CE) supports a wide range of residential metering applications with very few low-cost external components.Maximum design flexibility is provided by multiple UARTs, I2C, up to 21 DIO pins, and in-system programmable flash memory, which can be updated with data or application code in operation. A complete array of ICE and development tools, programming libraries, and reference designs enable rapid development and certification of TOU, AMR, and prepay meters that comply with worldwide electricity metering standards.
产品特点 返回TOP
Wh accuracy < 0.1% over 2000:1 current range
Exceeds IEC62053/ANSI C12.20 standards
Four sensor inputs
Low-jitter Wh and VARh plus two additional pulse test outputs (4 total, 10 kHz maximum) with pulse count
Four-quadrant metering
Tamper detection (Neutral current with CT, Rogowski or shunt, magnetic tamper input)
Line frequency count for RTC
Digital temperature compensation
Sag detection for phase A and B
Independent 32-bit compute engine
46-64 Hz line frequency range with same calibration. Phase compensation ( 7)
Three battery modes with wake-up on timer or push-button: BROWNOUT Mode (52 μA typ.) LCD Mode (21 μA typ., DAC active) SLEEP Mode (0.7 μA typ.)
Energy display during mains power failure
39 mW typical consumption @ 3.3 V, MPU clock frequency 614 kHz
22-bit delta-sigma ADC with 3360 Hz or 2520 Hz sample rate
8-bit MPU (80515),1 clock cycle per instruction, 10 MHz maximum, with integrated ICE for debug
RTC for TOU functions with clock-rate adjust register
Hardware watchdog timer, power fail monitor
LCD driver with 4 common segment drivers: Up to 156 (CXEP2331A/B) or 268 pixels (CXEP2331A/B)
Up to 22 (CXEP2331A/B) or 43 (CXEP2331A/B) general-purpose I/O pins. Digital I/O pins compatible with 5 V inputs
32 kHz time base
High-speed slave SPI interface to data RAM
Two UARTs for IR and AMR, IR driver with modulation
FLASH memory with security and in-system program update: 128 KB (CXEP2331A/32A) 256 KB (CXEP2331B/32B)
4 KB MPU XRAM
Industrial temperature range
68-pin QFN package for CXEP2331A/B pincompatible , 100-pin LQFP package for CXEP2331A/B, lead free
应用范围 返回TOP
High-End Residential Meters, AMR/AMI, and TOU
Industrial, Commercial, and Grid 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
相关芯片选择指南 返回TOP 更多同类产品......
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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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