SPAKMC331MFC20 View Datasheet(PDF) - Motorola => Freescale

Part Name

Description

Manufacturer

SPAKMC331MFC20

highly-integrated 32-bit microcontroller, 16MHz

Motorola => Freescale 

SECTION 4 SYSTEM INTEGRATION MODULE

This section is an overview of SIM function. Refer to the SIM Reference Manual (SIM-

RM/AD) for a comprehensive discussion of SIM capabilities. Refer to APPENDIX D

REGISTER SUMMARY for information concerning the SIM address map and register

structure.

4.1 General

The system integration module (SIM) consists of five functional blocks. Figure 4-1 is

a block diagram of the SIM.

The system configuration and protection block controls configuration parameters and

provides bus and software watchdog monitors. In addition, it provides a periodic inter-

rupt generator to support execution of time-critical control routines.

The system clock generates clock signals used by the SIM, other IMB modules, and

external devices.

The external bus interface handles the transfer of information between IMB modules

and external address space. EBI pins can also be configured for use as general-pur-

pose I/O ports E and F.

The chip-select block provides 12 chip-select signals. Each chip-select signal has an

associated base register and option register that contain the programmable character-

istics of that chip select. Chip-select pins can also be configured for use as general-

purpose output port C.

The system test block incorporates hardware necessary for testing the MCU. It is used

to perform factory tests, and its use in normal applications is not supported.

4

MC68331

USER’S MANUAL

SYSTEM INTEGRATION MODULE

MOTOROLA

4-1

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