Microcontroller User's Manual

MOTOROLA About This Book xlvii
Conventions
— ColdFire MCF5102 User’s Manual (MCF5102UM/AD)
— ColdFire MCF5202 User’s Manual (MCF5202UM/AD)
— ColdFire MCF5204 User’s Manual (MCF5204UM/AD)
— ColdFire MCF5206 User’s Manual (MCF5206EUM/AD)
— ColdFire MCF5206E User’s Manual (MCF5206EUM/AD)
— ColdFire MCF5307 User’s Manual (MCF5307UM/AD)
— ColdFire MCF5407 User’s Manual (MCF5407UM/AD)
Additional literature on ColdFire implementations is being released as new processors
become available. For a current list of ColdFire documentation, refer to the World Wide
Web at http://www.motorola.com/ColdFire/.
Conventions
This document uses the following notational conventions:
MNEMONICS In text, instruction mnemonics are shown in uppercase.
mnemonics In code and tables, instruction mnemonics are shown in lowercase.
italics Italics indicate variable command parameters.
Book titles in text are set in italics.
0x0 Prefix to denote hexadecimal number
0b0 Prefix to denote binary number
REG[FIELD] Abbreviations for registers are shown in uppercase. Specific bits,
fields, or ranges appear in brackets. For example, RAMBAR[BA]
identifies the base address field in the RAM base address register.
nibble A 4-bit data unit
byte An 8-bit data unit
word A 16-bit data unit
1
longword A 32-bit data unit
x In some contexts, such as signal encodings, x indicates a don’t care.
n Used to express an undefined numerical value
~ NOT logical operator
& AND logical operator
| OR logical operator
1
The only exceptions to this appear in the discussion of serial communication modules that support vari-
able-length data transmission units. To simplify the discussion these units are referred to as words regardless
of length.