MPC5553/MPC5554 Microcontroller Reference Manual, Rev. 5
Freescale Semiconductor
1-1
Chapter 1
Overview
1.1
Introduction
The MPC5553 and MPC5554 microcontrollers (MCU) are the first members of the MPC5500 family of
next generation powertrain microcontrollers built on the Power Architecture
technology. The MPC5500
family contains a host processor core that complies with the Power Architecture embedded category,
which is 100 percent user mode compatible with the original Power PC
user instruction set architecture
(UISA). This family of parts contains many new features coupled with high performance CMOS
technology to provide significant performance improvement over the MPC565.
The e200z6 CPU of the MPC5500 family is part of the family of CPU cores that implement versions built
on the Power Architecture embedded category. This core also has additional instructions, including digital
signal processing (DSP) instructions, beyond the classic PowerPC instruction set.
The MPC5553 and MPC5554 of the MPC5500 family have two levels of memory hierarchy. The fastest
accesses are to the unified cache (32-kilobytes in the MPC5554, 8-kilobytes in the MPC5553). The next
level in the hierarchy contains the 64-kilobyte internal SRAM and internal flash memory (2 MB flash in
the MPC5554, 1.5 MB in the MPC5553). Both the internal SRAM and the flash memory can hold
instructions and data. The external bus interface has been designed to support most of the standard
memories used with the MPC5xx family.
The complex I/O timer functions of the MPC5500 family are performed by an enhanced time processor
unit engines (eTPU) — two in the MPC5554, one in the MPC5553. Each eTPU engine controls 32
hardware channels. The eTPU has been enhanced over the TPU by providing 24-bit timers, double action
hardware channels, variable number of parameters per channel, angle clock hardware, and additional
control and arithmetic instructions. The eTPU can be programmed using a high-level programming
language.
The less complex timer functions of the MPC5500 family are performed by the enhanced modular
input/output system (eMIOS). The eMIOS’ 24 hardware channels are capable of single action, double
action, pulse width modulation (PWM) and modulus counter operation. Motor control capabilities include
edge-aligned and center-aligned PWM.
Off-chip communication is performed by a suite of serial protocols including controller area networks
(FlexCANs) — three FlexCANs in the MPC5554 and two in the MPC5553, an enhanced deserial/serial
peripheral interface (DSPI) — four in the MPC5554 and three in the MPC5553, and enhanced serial
communications interfaces (eSCIs). The DSPIs support pin reduction through hardware serialization and
deserialization of timer channels and general-purpose input/output (GPIO) signals.
The MCU of the MPC5553 and MPC5554 has an on-chip 40-channel enhanced queued dual analog to
digital converter (eQADC).
Summary of Contents for MPC5553
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