MOTOROLA
MC68349 USER'S MANUAL
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The programmer can further control power consumption dynamically, as the demand on
the processor fluctuates with system requirements and program execution. The on-chip
lock circuitry can be varied under software control from 131 kHz to the full rated speed of
the chip. Individual peripheral circuits can be turned off when they are not needed. A
special low power stop (LPSTOP) instruction drops power consumptions three orders of
magnitude as it halts all operation of the chip except for logic needed to reawaken the
processor.
1.6 APPLICATIONS AREAS
The following paragraphs discuss some of the applications for which the MC68349 is
ideal.
1.6.1 Personal Intelligent Communications
Representing a new class of consumer electronics, the personal intelligent communicator
is oriented towards providing maximum personal productivity to its user in a form-factor
emphasizing low cost, minimal physical size, extended operation on batteries, seamless
communications in a complex wireless/wireline environment, and extreme ease-of-use.
The solution to the needs of the personal intelligent communicator applications requires a
carefully selected balance of performance and integration to satisfy the system's
functional requirements while also meeting rigorous cost, weight, and power consumption.
The MC68349 was developed to the specifications of General Magic and its Alliance
Founders and, coupled with the proprietary Astro TM circuit, provides the complete digital
core of a personal intelligent communicator.
The MC68349 represents a carefully selected balance of capabilities oriented towards
enabling the personal intelligent communicator vision:
Advanced Motorola CMOS Process for Proven Reliability and Low Cost
Static Design and Extensive Power Management for Long Battery Life
Highly Integrated for Low Power, Low System Cost and High Reliability
CPU030 Provides 8 to 10 Sustained MIPS for Support of Advanced User Interfaces
Integration of Key System Functions for Performance/Power Optimizations
M68000 Architecture Provides Strong Software Base and Upward Migration Paths
1.6.2 Additional Application Areas
While specifically optimized for the needs of personal intelligent communications, the
MC68349 was partitioned to provide the general-purpose elements of the personal
intelligent communicator application while highly specialized features were placed in a
proprietary companion circuit. Thus, the MC68349 can provide substantial benefit to other
application areas as well.
Astro is a trademark of Motorola.