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  6. 8051・Z80 Legacy Migration Guide

8051・Z80 Legacy Migration Guide

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last updated:Jul 20, 2026

テクノスフィア 本社
テクノスフィア 本社
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End-of-Life measures for classic 8-bit microcontrollers and their porting and revival to current microcontrollers.

This article explains the measures taken for the discontinuation of production and support for classic 8-bit microcontrollers such as the 8051 (MCS-51) and Z80 series. It will share know-how on porting and reviving legacy code primarily written in assembly, dealing with special memory banks, and unique peripherals to STM32 and RL78. For more details, please refer to the technical column in the related links.

    Embedded system design service
8051-z80-legacy-migration-guide.jpg

8051・Z80 Legacy Migration Guide

8051-z80-legacy-migration-guide.jpg
8051-z80-legacy-migration-guide.jpg
  • Related Link - https://technosphere.co.jp/blog/8051-z80-legacy-mi…

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【Target】8051 (MCS-51) series / Z80 series (classic 8-bit) 【Migration Barriers】 - Assembly-based legacy code - Special memory banks - Custom peripheral circuits 【Migration Destination】STM32 / RL78 【Category】Embedded systems / Legacy migration and EOL measures *Porting and revitalization know-how will be shared.

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【Intended Use】 - EOL measures for industrial equipment equipped with 8051 and Z80 - Replacement and revitalization with STM32 and RL78 - Porting of assembly assets 【Examples of Achievements】 - Accumulated legacy migration know-how through the porting from classic 8-bit microcontrollers to current microcontrollers.

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テクノスフィア

テクノスフィア 本社

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Technosphere Co., Ltd. is a system development company based in Osaka that tackles customer challenges in advanced technology areas such as AI, IoT, and web system development. Since its founding in 2021, the company has leveraged a flat team structure to achieve a flexible and speedy development style. We are engaged in solutions that directly address social issues, such as image inspection AI and smart factory support systems.

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