Mc68328 Processor Overview; Key Features - Motorola DragonBall MC68328 User Manual

SECTION 1

MC68328 PROCESSOR OVERVIEW

As the consumer market for portable devices expands, system requirements have become
more demanding. Minimum number of components, smaller board space, lower power con-
sumption, and lower system cost are a few of the criteria necessary for a successful product.
In response to these consumer needs, Motorola has designed a new processor. The
MC68328 DragonBall
operation in an efficient package. The MC68328 processor delivers cost-effective perfor-
mance to satisfy the extensive requirements of today's consumer market for portable
devices.
The MC68328 processor provides key features that are suitable for many portable applica-
tions. Modules like a real-time clock (RTC), an LCD controller, pulse-width modulator
(PWM), timers, master and slave serial peripheral interface (SPI), universal asynchronous
receiver/transmitter (UART), and the system integration module (SIM28) give the system
engineer more flexibility and resources to design efficient and innovative products.

1.1 KEY FEATURES

The primary features of the MC68328 processor, illustrated in Figure 1, are as follows:
• MC68EC000 Static Core Processor
• 100% Compatibility with MC68000 And MC68EC000 Processors
—24-Bit External and 32-Bit Internal Address Bus
—Optional A31-A24 Capable of 4 Gbytes of Address Space
—16-Bit On-Chip Data Bus for MC68EC000 Bus Operations
—Static Design Allows Processor Clock to Be Stopped for Power Savings
—2.7 MIPS Performance at 16.67-MHz Processor Clock
• Dynamic Bus Sizing Support for Connections to 8-Bit and 16-Bit Devices
• System Integration Module (SIM28) Supporting Glueless System Design:
—System Configuration, Programmable Address Mapping
—Memory Interface for SRAM, EPROM and FLASH Memory
—16 Programmable Peripheral Chip-Selects with Wait-State Generation Logic
—Interrupt Controller with 13 Flexible Inputs
—Programmable Interrupt Vector Generator
—Hardware Watchdog Timer
—Software Watchdog Timer
—Low-Power Mode Control
—Up to 77 Individually Programmable Parallel Port Signals
—PCMCIA 1.0 Support
MOTOROLA
TM integrated portable system processor provides a 3.3V, fully static
MC68328 DRAGONBALL PROCESSOR USER'S MANUAL 1-1