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Chapter 1
Introduction
1.1
The MPC5644A Microcontroller Family
The MPC5644A is part of a family of microcontrollers that serves two main application areas:
•
Mid-range engine management
•
Automotive transmission control
The MPC5644A contains features of Freescale's MPC5600 family and many new features coupled with
high performance 90 nm CMOS technology to provide substantial reduction of cost per feature and
significant performance improvement.
The e200z4 host processor core of the MPC5644A complies with the Power Architecture
category architecture. It is 100% user mode compatible (with floating point library) with the classic
PowerPC instruction set. In addition to the Power Architecture instruction set, this core also has additional
instruction support for digital signal processing (DSP).
The MPC5644A has two levels of memory hierarchy consisting of 8 KB of instruction cache, backed by
up to 192 KB on-chip SRAM and up to 4 MB of internal flash memory. The MPC5644A includes an
external bus interface and a "calibration bus" that is only accessible when using the Freescale Vertical
Calibration calibration tools.
On-chip modules include:
•
Dual issue, 32-bit Power Architecture embedded category compliant e200z4 CPU core complex
•
Memory protection unit (MPU)
•
Interrupt controller (INTC)
•
Frequency-modulated phase-locked loop (FMPLL)
•
System integration unit (SIU)
•
Boot assist module (BAM)
•
32-channel second generation enhanced time processor unit (eTPU2)
•
24-channel enhanced modular Input Output System (eMIOS)
•
Enhanced queued analog-to-digital converter (eQADC)
•
3 deserial serial peripheral interface (DSPI) modules
•
3 enhanced serial communication interface (eSCI) modules
•
3 controller-area network (FlexCAN) modules
•
Cyclic redundancy check (CRC) module
•
System timers
•
Nexus development interface (NDI) per IEEE-ISTO 5001-2003 and 2010 standards
•
On-chip voltage regulator for regulating 5 V down to 3.3 V for internal functions and Nexus
interface
•
On-chip voltage Regulator controller for regulating 5 V down to 1.2 V for core logic
Freescale Semiconductor
MPC5644A Microcontroller Reference Manual, Rev. 6
Introduction
®
embedded
27
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