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VR7701™ SYSTEM PROCESSOR

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Building on the performance and superpipeline strengths of the VR5500 processor, the VR7701 CPU integrates the 400 MHz VR5500 core with an L2 memory cache and a DDR DRAM controller.

Part number	Name	Description	Clock speed, MIPS	Evaluation board	CPU Card
uPD30671F2-400	VR7701	64-bit superscalar architecture, VR5500 core with L2 cache, DDR SDRAM controller and I/Os	400 MHz 800 MIPS	DDB-VR7701A	CMB-VR7701A

Delivering outstanding performance of up to 800 MIPS at 400 MHz, the highly scalable VR5500 processor implements the 64-bit MIPS® IV instruction set and provides an easy migration path from the VR5000 and VR5432 devices.

Part number	Name	Description	Clock speed, MIPS	Evaluation board	CPU Card	System controller
uPD30550AF-2-300	VR5500A	64-bit internal architecture, 64-bit or 32-bit external interface, symmetric superscalar, MAC unit	300 MHz 600 MIPS	DDB-VR5500D	CMB-VR5500	VRC5477
uPD30550AF-2-400	VR5500A	64-bit internal architecture, 64-bit or 32-bit external interface, symmetric superscalar, MAC unit	400 MHz 800 MIPS	DDB-VR5500D	CMB-VR5500	VRC5477
uPD30550-800	VR5500	64-bit internal architecture, 64-bit or 32-bit external interface, symmetric superscalar, MAC unit	800 MHz 1600 MIPS	DDB-VR5500C	CMB-VR5500D	VRC5477

The highly integrated, low-power VR4100™ family offers high performance and on-chip peripheral functions such as a display controller, SDRAM interface and touch-panel interface controller.

Part number	Name	Description	Clock speed, MIPS	Power consumption	Evaluation board	CPU Card
uPD30181A-131	VR4181A	Low-power, low-cost system-on-a-chip featuring the highest level of integration.	131 MHz	500 mW at 2.5/3.3 V	DDB-VR4181A
uPD30181-66	VR4181	Low-cost integrated processor optimized for palm-class computing applications	66 MHz	250 mW at 2.5/3.3 V	DDB-VR4181
uPD30133F1	VR4133	Ultra-low-power processor, fully integrated with dual Ethernet MACs, IP Security processor, RAM/ROM I/F, serial I/Fs, GPI0, and PCI Bus	266 MHz	370 mW at 1.5 V	DDB-VR4133A	CMB-VR4133A
uPD30131F1-200	VR4131	Ultra-low-power processor that executes 1545 MIPS per Watt, fully integrated with RAM/ROM I/F, serial I/Fs, GPI0, and PCI Bus	200 MHz	200 mW at 1.5 V	DDB-VR4131A	CMB-VR4131

Older products, such as the VR5432™, VR5000™, and VR4300™ families, some VR4100™ processors, VR12000 processors, and VR1000 processors, are not currently recommended for new designs.

NEC is an active charter member of EEMBC (EDN Embedded Microprocessor Benchmark Consortium). EEMBC provides certified, industry-standard benchmarks for embedded control systems. These benchmarks give system designers an efficient evaluation tool and provide a way to objectively compare both speed and compiler efficiency, leading to lower system costs, improved time to market, and lower design risk.

Automotive/ Industrial	Consumer	Networking	Office Automation	Telecom

Advanced Parametric

VR5500	400 MHz	(Red Hat Compiler, 64-bit external bus)
	400 MHz	(Red Hat Compiler, 32-bit external bus)
	300 MHz	(Red Hat Compiler, 64-bit external bus)
	300 MHz	(Red Hat Compiler, 32-bit external bus)
	250 MHz	(Green Hills Compiler)
VR5432	167 MHz	(Apogee Compiler)
VR4122	180 MHz	(Green Hills Compiler)

You can compare the benchmark score reports with other manufacturers by visiting www.eembc.org.