Product category:
Microprocessors, Microcontrollers and DSPs
News Release from: Hitachi Europe | Subject: SH7751R and SH7750R
Edited by the Electronicstalk Editorial
Team on 19 July 2002
Embedded processors offer speedy upgrade
Two new SH-4 32bit superscalar RISC embedded microprocessors offer higher-frequency operation and a new cache architecture.
Two new SH-4 32bit superscalar RISC embedded microprocessors offer higher-frequency operation and a new cache architecture The high performance SH7751R and SH7750R devices from Hitachi are ideally suited for multimedia appliances, car information systems and low-cost networking applications and provide full software and pin compatibility, enabling an easy migration path from the SH-4
This article was originally published on Electronicstalk on 16 Feb 2001 at 8.00am (UK)
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The new devices boast a superscalar architecture, full floating point engine, SIMD (single-instruction multiple-data) acceleration for 3D and DSP, and 16bit fixed instruction length for low memory footprint.
The SH7751R offers an integrated PCI controller while the SH7750R has a 64bit SDRAM interface which provides a large memory bandwidth.
Both offer higher performance (430MIPS/1.7GFLOPS) and higher frequency (240MHz) than existing SH-4 devices, with 64bit bandwidth to provide a memory throughput up to 120MHz SDRAM access at a peak of 960Mbyte/s.
Further reading
Big Flash memory for 32bit RISC microcontroller
Available now, the SH7018F 32bit RISC microcontroller is the latest addition to the high-performance SuperH family from Hitachi.
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Hitachi has announced the MARU Beam Series of red laser diodes which offers the world's first circular beam with a 1.2 (typical) aspect ratio in the 635nm wavelength band.
The new cache architecture from direct map to two-way set associative reduces the cache miss and increases the real time capabilities.
Operating at 1.5V, they have four additional DMA channels (eight in total), support a wide temperature range from -40 to +85C, and provide 16Kbyte instruction and 32Kbyte data cache memory.
The new devices support the complete multimedia software stack which includes operating systems, JavaVM, browser, e-mail, OSGI, VoIP, H.323 suitable for Java-based embedded applications, Internet appliances and multimedia interactive TV.
Other specific multimedia middleware such as speech recognition, text to speech, MP3 and MPEG-4 are also supported for car information system applications.
The low-cost, high throughput, flexible PCI architecture of the new SH-4 make it suitable for low-end networking such as firewall, virtual private network (VPN) and residential gateways.
"The SH-4 has achieved high-volume success in the car information system market over the past 3 years", said Francois-Xavier Godet, SH-4 product marketing at Hitachi Europe.
"This has enabled us to develop the enhanced specification SH-4 and offer it to customers at a very competitive price".
The new SH-4 series is supported by one of the widest ranges of operating systems including open source Linux, VxWorks, QNX and Windows CE.NET (which is now boosted by the FPU implementation).
The new devices are in full mass production and are available in BGA and QFP packages.
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