Electronic Design


Control-Logic ASICs Function For Mobile Pentium III Processors
A family of control-logic ASICs may be used with Intel mobile Pentium III processors featuring SpeedStep technology. According to the company, these ASICs can help extend the battery life of mobile PCs by allowing the processor to run at a lower speed and voltage when operating on the battery. The PC can reduce its power needs by 45% while maintaining up to 80% of maximum performance.

When the mobile PC detects a change in its power source from battery to wall sockets, the ASIC provides the appropriate control signals to increase the processor speed and voltage levels for maximum performance. The design of the ASICs for Pentium III processors has been translated from another ASIC netlist using the company's proprietary NETRANS software.

For pricing and availability information, contact the company.

American Microsystems Inc., 2300 Buckskin Rd., Pocatello, ID 83201; (208) 233-4690; fax (208) 234-6795; Internet: www.amis.com.

Microprocessor Targets Smart Network Applications
The MPC7410 fourth-generation PowerPC microprocessor is built on AltiVec technology. It features low-power operation and provides a solution for host processor requirements in next-generation networking equipment. According to the company, this microprocessor suits network control and storage, telecommunications, and high-end embedded, scientific, and computing applications.

The AltiVec processor operates at clock speeds of up to 550 MHz. Software can be optimized to use the MPC7410's AltiVec technology to achieve gains in performance ideal for signal processing in addition to host processor functionality. It supports full symmetric multiprocessing (SMP) capabilities necessary for designing highly scalable and dense networking systems. It implements the company's high-bandwidth MPX system bus, which is capable of achieving data rates up to 6.4 Gbits/s. It provides up to five times the bus performance over previous-generation G3 processors. This microprocessor is compatible with the entire PowerPC family. It is the first of the company's microprocessors to be manufactured using the HiPerMOS 6 (HiP6) 0.18-µm copper fabrication process. This enables a small die size and a typical power dissipation of only 6 W at 550 MHz.

The MPC7410 is available in 400-, 450-, and 500-MHz versions, with a 550-MHz version expected soon. In 10,000-unit quantities, they cost $95, $135, $195, and $230 each.

Motorola; 3102 North 56th St., Phoenix, AZ 35018; (602) 952-3000; Internet: www.motorola.com.

8051-Based Microcontroller Achieves 50 MIPS at 50 MHz
The DS89C420 Ultra High-Speed Microcontroller is the first completely 8051-compatible microcontroller to achieve peak processing speeds of one machine instruction/clock cycle. This translates into 50 MIPS at a maximum clock speed of 50 MHz.

This microcontroller features 16 kbytes of flash memory to allow in-system, in-application, or standard-parallel programming. The enhancements result from a redesign of the 8051 processing core and advanced memory address/access methods. At the same time, this device remains 100% pin- and instruction-set compatible with existing 8051-based systems. It can be assembled and shipped erased in the end equipment, then programmed on-site for application-specific purposes. Also, it can replace an existing 8051-type microcontroller for significantly higher performance. Software written for existing 8051-based systems works with the DS89C420, with the exception of critical timing routines.

In 25,000-unit quantities, the microcontroller costs $10.10 on an 8-bit processor.

Dallas Semiconductor, 4401 South Beltwood Pkwy., Dallas, TX 75244-3292; (972) 371-3832; www.dalsemi.com.

80C51-Based 8-Bit Microcontrollers Provide A Small Footprint
The 20-pin TSSOP 87LPC762 and 87LPC764 microcontrollers deliver a smaller footprint with less material, improved EMC, and low power consumption. With more integrated on-chip features, the devices reduce parts count and lower system costs. They offer a configurable oscillator and advanced burnout-detection capabilities.

Both devices support operating ranges from 2.7 to 6.0 V. They achieve 20-MHz operation above 4.5 V and 10-MHz operation below 4.5 V. Also, they feature user-configurable oscillator control, with a multispeed crystal/resonator and an on-chip RC oscillator. Both incorporate UART and I2C serial communications.

Both microcontrollers come in 20-pin TSSOP packages. In 10,000-unit quantities, the 87LPC762 and 87LPC764 devices cost $1.05 and $1.15 each, respectively.

Philips Semiconductor Inc., P.O. Box 3409, 811 East Arques Ave., Sunnyvale, CA 94088-3409; (408) 991-2000; Internet: www.philips.semiconductors.com.

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