中文
EnglishThe CXEP2338A/CXEP2338B integrate our Single Converter Technology with a 22-bit delta sigma ADC, a customizable 32-bit computation engine (CE) for core metrology functions, as well as a user-program
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产品概述 返回TOP
The CXEP2338A/CXEP2338B metrology processors are based on Maxim Integrated’s 4th-generation metering architecture supporting the CXEP2338A CXEP2338B series of isolated current sensing products that offer drastic reduction in component count, immunity to magnetic tampering, and unparalleled reliability. The CXEP2338A/CXEP2338B integrate our Single Converter Technology with a 22-bit delta sigma ADC, a customizable 32-bit computation engine (CE) for core metrology functions, as well as a user-programmable 8051-compatible application processor (MPU) core with 64KB flash and 5KB RAM An external host processor can access metrology functions directly through the SPI interface, or alternatively through the embedded MPU core in applications requiring metrology data capture, storage, and preprocessing within the metrology subsystem. In addition, the devices integrate an RTC, DIO, and UART. A complete array of ICE and development tools, programming libraries, and reference designs enable rapid development and certification of meters that meet all ANSI and IEC electricity metering standards worldwide The CXEP2338A/CXEP2338B operate over the industrial temperature range and come in a 64-pin lead(Pb)-free package.
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 (±10°)
Independent 32-Bit Compute Engine
64KB Flash, 5KB RAM
Built-In Flash Security
SPI Interface to Host with Flash Program Capability
Up to Four Pulse Outputs with Pulse Count
8-Bit MPU (80515), Up to 5 MIPS (Optional Use)
Full-Speed MPU Clock in Brownout Mode
Up to 29 Multifunction DIO Pins
Hardware Watchdog Timer (WDT)
UART for AMR or Other Communication Duties
I2C/MICROWIRE®EEPROM Interface
Innovative Isolation Technology (Requires Companion CXEP2338A CXEP2338B Sensor, also from Maxim Integrated) Eliminates Current Transformers
Four Current Sensor Inputs with Selectable Differential Mode
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
Brownout Mode (BRN)
Sleep Mode (SLP)
Two Battery-Backup Modes:
Wake-Up on Pin Events and Wake-On Timer
1μA in Sleep Mode
应用范围 返回TOP
Three-Phase Residential, Commercial, and Industrial Energy Meters
技术规格书（产品PDF) 返回TOP
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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 |
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