mcf5282 Freescale Semiconductor, Inc, mcf5282 Datasheet - Page 241

• Manufacturer Part Number: mcf5282
• Manufacturer: Freescale Semiconductor, Inc

Chapter 14
Signal Descriptions
This chapter describes the processor’s external signals. It includes an alphabetical listing of signals that
characterizes each signal as an input or output, defines its state at reset, and identifies whether a pull-up
resistor should be used.
interact.
14.1
Figure 14-1
Freescale Semiconductor
Overview
shows the block diagram with the signal interface.
The terms ‘assertion’ and ‘negation’ are used to avoid confusion when
dealing with a mixture of active-low and active-high signals. The term
‘asserted’ indicates that a signal is active, independent of the voltage level.
The term ‘negated’ indicates that a signal is inactive.
Active-low signals, such as SRAS and TA, are indicated with an overbar.
MCF5282 and MCF5216 ColdFire Microcontroller User’s Manual, Rev. 3
Chapter 13, “External Interface Module
NOTE
(EIM),” describes how these signals
14-1