Motorola MC68340 manual Physical, Compact DISC-INTERACTIVE

Models: MC68340

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Freescale Semiconductor, Inc.

Freescale Semiconductor, Inc.

requires only a 3.3-V power supply, reduces current consumption by 40–60% in all modes of operation (as well as reducing noise emissions).

The MC68340 has many additional methods of dynamically controlling power consumption during operation. The frequency of operation can be lowered under software control to reduce current consumption when performance is less critical. Idle internal peripheral modules can be turned off to save power (5–10% each). Running a special low power stop (LPSTOP) instruction shuts down the active circuits in the CPU and peripheral modules, halting instruction execution. Power consumption in this standby mode is reduced to about 350 W. Processing and power consumption can be resumed by resetting the part or by generating an interrupt with the SIM40's periodic interrupt timer.

1.5 PHYSICAL

The MC68340 is available as 0–16.78 MHz and 0–25.16 MHz, 0°C to +70°C and -40°C to +85°C, and 5.0 V ±5% and 3.3 V ±0.3 supply voltages (reduced frequencies at 3.3 V). Thirty-two power and ground leads minimize ground bounce and ensure proper isolation of different sections of the chip, including the clock oscillator. A 144 pins are used for signals and power. The MC68340 is available in a gull-wing ceramic quad flat pack (CQFP) with 25.6-mil (0.001-in) lead spacing or a 15 15 plastic pin grid array (PPGA) with 0.1-in pin spacing.

1.6 COMPACT DISC-INTERACTIVE

The MC68340 was designed to meet the needs of many markets, including compact disc- interactive (CD-I). CD-I is an emerging standard for a publishing medium that will bring multimedia to a broad general audience—the consumer. CD-I players combine television and stereo systems as output devices, with interactive control using a TV remote-control- like device to provide a multimedia experience selected from software “titles” contained in compressed form on standard compact discs.

The highly integrated MC68340 is ideal as the central processor for CD-I players. It provides the M68000 microprocessor code compatibility and DMA functions required by the CD-I Green Book specification as well as many other useful on-chip functions for a very cost-effective solution. The extra demands of full-motion video CD-I systems make the best use of the MC68340 high performance. The MC68340 is CD-I compliant and has been CD-I qualified. With its low voltage operation, the MC68340V is the only practical choice for portable CD-I.

MOTOROLAMC68340 USER’S MANUAL1- 9

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Motorola MC68340 manual Physical, Compact DISC-INTERACTIVE

MC68340 specifications

The Motorola MC68340 is a highly integrated microprocessor that was introduced in the early 1990s. It belongs to the 68000 family of microprocessors and is designed to cater to the demands of embedded systems, particularly in telecommunications and networking applications. This chip represents a significant evolution in microprocessor technology by combining a microprocessor core with additional peripherals on a single chip, making it an attractive solution for engineers looking to design compact and efficient systems.

One of the key features of the MC68340 is its 32-bit architecture, which allows for significant processing power and data handling capabilities. This architecture enables the processor to handle larger data sizes and perform more complex calculations compared to its 16-bit predecessors. The MC68340 operates at clock speeds typically ranging from 16 MHz to 25 MHz. Its dual instruction pipeline enhances throughput, allowing for simultaneous instruction fetches and executions, which significantly boosts performance.

A notable characteristic of the MC68340 is the inclusion of integrated peripherals, which help reduce the overall component count in a system. Key integrated components include a memory management unit (MMU), a direct memory access (DMA) controller, and various communication interfaces such as serial ports. The memory management capabilities enhance the processor's ability to manage memory resources efficiently, enabling it to support multitasking environments commonly found in modern computing.

In terms of connectivity, the MC68340 features connections for both synchronous and asynchronous serial communication, making it well-suited for networking tasks. The processor supports a range of bus standards, including address and data buses, which facilitate seamless interaction with peripheral devices.

Another important aspect of the MC68340 is its flexibility. The processor supports multiple operating modes, including multiple CPU configurations and compatibility with the Motorola 68000 family, allowing for easier integration into existing systems.

Moreover, the MC68340 boasts low power consumption compared to many of its contemporaries, making it an excellent choice for battery-operated applications, enhancing its appeal in sectors like telecommunications, industrial control, and automotive systems. Its combination of performance, integration, versatility, and efficiency has secured the MC68340 a reputable position in the annals of embedded systems technology, proving to be a valuable asset for developers and engineers alike.