Wed . 19 Apr 2019

H8 Family

no h8 family, h8 family
H8 is the name of a large family of 8-bit, 16-bit and 32-bit microcontrollers made by Renesas Technology, originating in the early 1990s within Hitachi Semiconductor and still actively evolving as of 2006 The family of largely CISC machines is unrelated to the higher-performance SuperH family of 32-bit RISC-like microcontrollers

It is supported in the Linux kernel since version 421


  • 1 Variants
  • 2 Applications
  • 3 In popular culture
  • 4 References
  • 5 External links


Subfamilies include the 8/16-bit H8/300 and H8/500, the 16/32-bit H8/300H and H8S and the 32-bit H8SX series, each with dozens of different variants, varying by speed, selection of built-in peripherals such as timers and serial ports, and amounts of ROM, flash memory and RAM Built-in ROM and flash memory tends to range from 16 KB to 1024 KB, and RAM from 512 B to 512 KB

The basic architecture of the H8 is patterned after the DEC PDP-11, with eight 16-bit registers the H8/300H and H8S have an additional bank of eight 16-bit registers, and a variety of addressing modes

Both H8/300H and H8S have eight 32-bit registers, each of which can be treated as one 32-bit register, two 16-bit registers, or two 8-bit registers, with the H8S having an internal 32-bit configuration2 Several companies provide compilers for the H8 family, and there is a complete GCC port, including a simulator There are also various hardware emulators available

The family is continued with the H8SX 32-bit controllers


H8S may be found in digital cameras, some ThinkPad notebooks,34 printer controllers, smart cards, chess computers, music synthesizers5 and in various automotive subsystems The LEGO Mindstorms RCX, an advanced robot toy/educational tool, uses the H8/300 Namco employed an H8/3002 as a sound processor for various games it made in the late 1990s: notably those using its System 12 architecture

In popular cultureedit

H8 is referenced in the Muse song "Space Dementia"6


  1. ^ Git pull request for the H8 port on the LKML archives
  2. ^ Renesas H8S/2116
  3. ^ Renesas H8S/2161BV on ThinkWikiorg
  4. ^ Renesas H8S/2116V on ThinkWikiorg
  5. ^ FS1R Inside
  6. ^ Muse Wiki

External linksedit

  • Renesas Electronics
  • Online training for Renesas products
  • A community support forum

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H8 Family

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