MCF51EM256 32-Bit MCU for Smart Meter Applications

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MCF51EM256 is NXP^®.s smart-meter-on-a-chip 32-bit ColdFire^® V1 core microcontroller (MCU) with embedded LCD controller, 16-bit analog-to-digital converter (ADC), and metrology-specific peripherals optimized for smart meter applications. MCF51EM256 comes with a full suite of hardware and software tools that make development quick and easy.

Data Sheet

Reference Manual

Product Details

Block Diagram

ColdFire MCF51EM Microcontroller Block Diagram

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Features

32-bit V1 ColdFire^® CPU offering 47 MIPS at 50 MHz 3.3-volt single supply
Up to 256 KB flash (dual bank)
Up to 16 KB SRAM
Low-power operation mode
4 x 16-bit segmentation and reassembly (SAR) ADC
288 segment LCD driver
Up to 50 general purpose input/output (GPIO)
Integrated real-time clock (RTC)
Automatic meter reading (AMR) serial peripheral interface (SPI)
Background debug mode (BDM) for in-circuit debugging
The MCF51EM256 is included in NXP^®.s product longevity program, with assured supply for a minimum of 10 years after launch

Documentation

Quick reference to our documentation types.

1-5 of 22 documents

^{Fact Sheet}
MCF51EM Smart metering made easy with V1 ColdFire^® ® MCU - Fact SheetFeatured

PDFRev 0Oct 15, 2009198.2 KBMCF51EM256FSEnglish, 中文
^{Reference Manual}
MCF51EM256 Series ColdFire^® ® Integrated Microcontroller - Reference ManualFeatured

PDFRev 8.1May 21, 20124.3 MBMCF51EM256RMEnglish
^{Data Sheet}
MCF51EM256 Series ColdFire^® Microcontroller - Data SheetFeatured

PDFRev 3Aug 30, 20101.0 MBMCF51EM256English
^{Reference Manual}
MCF51EM256 Reference Manual Addendum

PDFRev 1Jan 18, 201237.6 KBMCF51EM256RMADEnglish
^{Reference Manual}
DRM121, MQX-Enabled MCF51EM256 Single-Phase Electricity Meter - Reference Manual

PDFRev 0Jun 16, 201111.0 MBDRM121English
^{Reference Manual}
ColdFire^® ® Family Programmer’s - Reference Manual

PDFRev 3Mar 8, 20051.7 MBCFPRMEnglish
^{Application Note}
FFT-Based Algorithm for Metering Applications - Application Note

PDFRev 4Jul 26, 2015642.7 KBAN4255English, 中文
^{Application Note}
AN4752: FreeMASTER Usage, Serial Driver Implementation – Application Note

PDFRev 0May 31, 20132.2 MBAN4752English
Sign in required
^{Application Note}
AN4753: Rational ClearCase Use in CodeWarrior 10.3 – Application Note

PDFRev 0May 30, 2013477.3 KBAN4753English
^{Application Note}
Display eGUI using TWR-LCD board

PDFRev 0Jan 17, 20121.7 MBAN4452English, 中文
^{Application Note}
AN3796, LCD Driver Specification - Application Notes

PDFRev 4Oct 21, 2011374.4 KBAN3796English
^{Application Note}
AN4164, A Single-Phase Energy Meter with Capacitive Power Supply and Shunts - Application Notes

PDFRev 1Sep 1, 2010174.8 KBAN4164EnglishAssociated File: AN4164_DEMO_EMETER_SW
^{Application Note}
Enabling the IRTC Module

PDFRev 0Jul 22, 2010145.2 KBAN4023EnglishAssociated File: AN4023SW
^{Application Note}
AN3949, ADC16 Calibration Procedure and Programmable Delay Block Synchronization For the MCF51EM256 - Application Notes

PDFRev 1Apr 22, 2010251.6 KBAN3949EnglishAssociated File: AN3949SW
^{Application Note}
AN3827, Differences Between Controller Continuum ADC Modules - Application Notes

PDFRev 1Apr 1, 2010152.1 KBAN3827English
^{Application Note}
Using the MCF51EM Family for Infrared Communication

PDFRev 0Sep 29, 20092.4 MBAN3938EnglishAssociated File: AN3938SW
^{Application Note}
MCF51EM256 Performance Assessment with Algorithms Used in Metering Applications

PDFRev 0Sep 28, 2009454.1 KBAN3896EnglishAssociated File: AN3896SW
^{User Guide}
MCF51 Advanced Control Library User’s Reference Manual

PDFRev 0Apr 14, 2009281.2 KBMCF51_ACLIBEnglish
^{Application Note Software}
Software to accompany AN3796

ZIPRev 4Oct 21, 201133.9 MBAN3796SWEnglish
^Errata
MSEF51EM256_1M00S - Mask Set Errata for Mask 1M00S

PDFRev 1May 27, 2015179.1 KBMSEF51EM256_1M00SEnglish
^Errata
MSEF51EM256_2M00S- Mask Set Errata for Mask 2M00S

PDFRev 0May 27, 2015162.3 KBMSEF51EM256_2M00SEnglish
^{Supporting Information}
MCF51EM256 anti-tamper features a leap towards robust smart metering solutions

PDFRev 0Dec 1, 2009215.4 KBBRMETERING__INT_ISSUE_4_09English

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Design Resources

Hardware

2 hardware offerings

^{Emulators, Probes, and Programmers}
Universal Multilink FX High-Speed Development Interface

U-MULTILINK-FX
^{Evaluation and Development Boards}
MPC5646C Devlce and Target Adapters

MPC5646C-DB

5 hardware offerings

^{Test Accessories and Debugger}
USB Multilink Universal FX

Multilink Universal FX is a high-speed,BDM/JTAG debug probe for Kinetis, LPC, S32, MPC5xxx, MPC5xx/8xx, ColdFire, HC(S)12(X), S12Z, HCS08, RS08, DSCdevices. Supports SWO ...

By P & E Microcomputer Systems, Inc Gold Partner
^{Test Accessories and Debugger}
CYCLONE LC

Production programmer. Models support high-speed, low-cost, in-circuit flash programming, debugging, & test of many NXP 8-/16-/32-bit systems. Stand-alone or host-control...

By P & E Microcomputer Systems, Inc Gold Partner
^{Test Accessories and Debugger}
USB Multilink Universal

USB Multilink Universal is an all-in-one BDM/JTAG debug probe Kinetis, LPC, i.MX RT, S32, HCS08, HC(S)12(X), S12Z, RS08, ColdFire V1/+V1, ColdFire V2-4, MPC5xxx, DSC. Sup...

By P & E Microcomputer Systems, Inc Gold Partner
^{Test Accessories and Debugger}
CYCLONE FX

Advanced Cyclone programmer. Models support high-speed in-circuit flash programming, debug, and test of many NXP 8-/16-/32-bit MCUs. Enhanced speed/security/storage. Sta...

By P & E Microcomputer Systems, Inc Gold Partner
^{Complementary Silicon or Component}
NOR Flash

Micron manufactures a wide range of NOR Flash products, including Serial and quad SPI, Industry standard Parallel NOR flash and high performance parallel NOR Flash suppor...

By Micron Gold Partner