下载
Freescale Semiconductor
Application Note
Document Number: AN4113
Rev. 0, 07/2011
Contents
© Freescale Semiconductor, Inc., 2011. All rights reserved.
1 Introduction
This document provides a summary of the differences
between Freescale’s MPC556x family of devices and the
MPC5644A, and may be used as an aid for planning a
migration to the MPC5644A.
The MPC5644A is available in 324 BGA, 208 BGA, and
176 QFP packages. This guide will only discuss the
migration between the MPC556x and MPC5644A with
respect to the 324 BGA package.
1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
2 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
3 Hardware considerations. . . . . . . . . . . . . . . . . . . . . . . . . 4
3.1 Ball map: hardware compatibility. . . . . . . . . . . . . . . 4
3.2 Boot configuration: hardware compatibility . . . . . . . 4
3.3 PLL configuration: hardware compatibility. . . . . . . . 5
3.4 Clock circuitry: hardware compatibility . . . . . . . . . . 5
3.5 Power supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
4 Software considerations . . . . . . . . . . . . . . . . . . . . . . . . 13
4.1 System modules . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4.2 e200z4 Core . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
4.3 Internal/external memory. . . . . . . . . . . . . . . . . . . . 32
4.4 Analog . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
4.5 Timer modules. . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
4.6 Communication peripherals. . . . . . . . . . . . . . . . . . 41
4.7 Nexus and JTAG (debug) . . . . . . . . . . . . . . . . . . . 43
4.8 Power management controller (PMC) . . . . . . . . . . 45
Appendix ABall map diagrams. . . . . . . . . . . . . . . . . . . . . . . . 46
A Guide to Transitioning from the
MPC556x to the MPC5644A
by: Robert Moran and Inga Harris
32-bit Automotive Applications Engineering
Microcontroller Solutions Group
