Freescale Semiconductor Document Number: MCF51EM256 Rev.3, 8/2010 Data Sheet: Advance Information MCF51EM256 80 LQFP 100 LQFP MCF51EM256 Series 14 mm 14 mm 14 mm 14 mm 917A-03 983-02 ColdFire Microcontroller Covers: MCF51EM256 MCF51EM128 The MCF51EM256/128 series microcontrollers are Three serial communications interface a member of the ColdFire family of reduced modules (SCI) instruction set computing (RISC) microprocessors. Three serial peripheral interfaces Inter-integrated circuit (IIC) This document provides an overview of these 32-bit microcontrollers, focusing on their highly Two 8-bit and one 16-bit modulo timers integrated and diverse feature set. (MTIM) Two-channel timer/PWM module (TPM) These microcontrollers are systems-on-chips (SoCs) that are based on the V1 ColdFire core and the following features: Operating at processor core speeds up to 50.33 MHz (peripherals operate at half of this speed) at 3.6 V to 2.5 V and 20 MHz at 3.6 V to 1.8 V Up to 256 KB of flash memory Up to 16 KB of RAM Less than 1.3 A of typical power consumption in battery mode, with MCU supply off Ultra-low power independent RTC with calendar features, separate time base, power domain, and 32 bytes of RAM A collection of communications peripherals, including UART, IIC and SPI Integrated 16-bit SAR analog-to-digital converter Programmable delay block (PDB) Two analog comparators with selectable interrupt (PRACMP) LCD driver This document contains information on a product under development. Freescale reserves the right to change or discontinue this product without notice. Freescale Semiconductor, Inc., 2008-2010. All rights reserved. PreliminarySubject to Change Without NoticeTable of Contents 1 MCF51EM256 Series Configurations 3 2.9 External Oscillator (XOSC) Characteristics . 34 1.1 Device Comparison .3 2.10 Internal Clock Source (ICS) Characteristics 35 1.2 Block Diagram .4 2.11 LCD Specifications . 37 1.3 Features .6 2.12 AC Characteristics 37 1.3.1 Feature List .7 2.12.1 Control Timing . 38 1.4 Part Numbers .9 2.12.2 Timer (TPM/FTM) Module Timing 39 1.5 Pinouts and Packaging .11 2.13 VREF Characteristics . 40 1.5.1 Pinout: 80-Pin LQFP .11 2.14 SPI Characteristics . 40 1.5.2 Pinout: 100-Pin LQFP 12 2.15 Flash Specifications . 43 2 Electrical Characteristics 16 2.16 EMC Performance 44 2.1 Parameter Classification 16 2.16.1 Radiated Emissions . 44 2.2 Absolute Maximum Ratings .17 3 Mechanical Outline Drawings 45 2.3 Thermal Characteristics 18 3.1 80-pin LQFP Package . 45 2.4 Electrostatic Discharge (ESD) Protection Characteristics 3.2 100-pin LQFP Package 49 19 4 Revision History 53 2.5 DC Characteristics 20 2.6 Supply Current Characteristics .24 2.7 Analog Comparator (PRACMP) Electricals 27 2.8 ADC Characteristics .27 MCF51EM256 Series ColdFire Microcontroller Data Sheet, Rev.3 2 PreliminarySubject to Change Without Notice Freescale Semiconductor