CXEP2331 offers single-ended inputs for two current channels and two single-ended voltage inputs,A 32kHz crystal time base for the entire system and internal battery-backup support for RAM and RTC fur

   产品概述 返回TOPnL9嘉泰姆

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, MICROWIRE™, 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TOPnL9嘉泰姆

 Wh accuracy < 0.1% over 2000:1 current range nL9嘉泰姆

 Exceeds IEC62053/ANSI C12.20 standards nL9嘉泰姆

 Four sensor inputs nL9嘉泰姆

 Low-jitter Wh and VARh plus two additional pulse test outputs (4 total, 10 kHz maximum) with pulse count nL9嘉泰姆

 Four-quadrant metering nL9嘉泰姆

 Tamper detection (Neutral current with CT, Rogowski or shunt, magnetic tamper input) nL9嘉泰姆

 Line frequency count for RTC nL9嘉泰姆

 Digital temperature compensation nL9嘉泰姆

 Sag detection for phase A and B nL9嘉泰姆

 Independent 32-bit compute engine nL9嘉泰姆

 46-64 Hz line frequency range with same calibration. Phase compensation ( 7) nL9嘉泰姆

 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.) nL9嘉泰姆

 Energy display during mains power failure nL9嘉泰姆

 39 mW typical consumption @ 3.3 V, MPU clock frequency 614 kHz nL9嘉泰姆

 22-bit delta-sigma ADC with 3360 Hz or 2520 Hz sample rate nL9嘉泰姆

 8-bit MPU (80515),1 clock cycle per instruction, 10 MHz maximum, with integrated ICE for debug nL9嘉泰姆

 RTC for TOU functions with clock-rate adjust register nL9嘉泰姆

 Hardware watchdog timer, power fail monitor nL9嘉泰姆

 LCD driver with 4 common segment drivers: Up to 156 (CXEP2331A/B) or 268 pixels (CXEP2331A/B) nL9嘉泰姆

 Up to 22 (CXEP2331A/B) or 43 (CXEP2331A/B) general-purpose I/O pins. Digital I/O pins compatible with 5 V inputs nL9嘉泰姆

 32 kHz time base nL9嘉泰姆

 High-speed slave SPI interface to data RAM nL9嘉泰姆

 Two UARTs for IR and AMR, IR driver with modulation nL9嘉泰姆

 FLASH memory with security and in-system program update: 128 KB (CXEP2331A/32A) 256 KB (CXEP2331B/32B) nL9嘉泰姆

 4 KB MPU XRAM nL9嘉泰姆

 Industrial temperature range nL9嘉泰姆

 68-pin QFN package for CXEP2331A/B pincompatible , 100-pin LQFP package for CXEP2331A/B, lead freenL9嘉泰姆

   应用范围 返回TOPnL9嘉泰姆

nL9嘉泰姆

High-End Residential Meters, AMR/AMI, and TOUnL9嘉泰姆

Industrial, Commercial, and Grid MetersnL9嘉泰姆

   技术规格书（产品PDF) 返回TOP nL9嘉泰姆

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