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INTRODUCTION

The V850 Series? is a collection of NEC Electronics single-chip microcontrollers that have a CPU core that uses the RISC microprocessor technology of the V800 SeriesTM, and incorporate functions such as internal ROM/RAM and peripheral I/O.

The V850 Series of microcontrollers provides a migration path to NEC Electronics’ existing 78K Series of original single-chip microcontrollers, and boasts a higher cost-performance.

The V850 Series includes products that incorporate the V850 CPU and products that incorporate the V850E CPU. The V850E/MS1 is one of the latter. This chapter briefly outlines the V850 Series.

General

Real-time control systems are used in a wide range of applications, including:

? Office equipment such as HDDs (Hard Disk Drives), PPCs (Plain Paper Copiers), printers, and facsimiles,

? Automotive electronics such as engine control systems and ABSs (Antilock Braking Systems)

? Factory automation equipment such as NC (Numerical Control) machine tools and various controllers.

Features

? High-performance 32-bit architecture for embedded control

? Number of instructions: 81

? 32-bit general-purpose registers: 32

? Load/store instructions in long/short format

? 3-operand instruction

? 5-stage pipeline of 1 clock cycle per stage

? Hardware interlock on register/flag hazards

? Memory space Program space: 64 MB linear

Data space: 4 GB linear

? Special instructions

? Saturation operation instructions

? Bit manipulation instructions

? On-chip multiplier executing multiplication in 1 to 2 clocks

? 16 bits × 16 bits → 32 bits

? 32 bits × 32 bits → 32 or 64 bits