v850

V850 is the trademark name for a 32-bit RISC CPU architecture of Renesas Electronics for embedded microcontrollers, introduced in the early 1990s by NEC and still being developed as of 2018.
V850 Family has been evolved by many microarchitecture extensions until today, but all the extensions have binary code level backward compatibility of programs across a quarter century. Its basis is 32 of 32-bit general-purpose registers with load/store architecture. It has high code efficiency because most of frequently used instructions are mapped into 16-bit half-word.
In its earlier stage, it mainly focused on ultra-low power consumption such as 0.5 mW/MIPS. V850 has been widely used in variety of applications including: optical disk drives, hard disk drives, mobile phones, car audio and inverter compressors for air conditioners. But today, new microarchitectures are mainly toward high performance and high reliability with such as dual-lockstep redundant mechanism for automotive industry. Nowadays, V850 Family and RH850 Family are comprehensively used in a car.

View More On Wikipedia.org