MIPI Alliance Releases I3C Basic v1.2 Utility and Control Bus Interface for Mobile, IoT and Data Center Applications

BRIDGEWATER, N.J.--(BUSINESS WIRE)--Aug 6, 2025--

The MIPI Alliance, an international organization that develops interface specifications for mobile and mobile-influenced industries, today announced the release of MIPI I3C Basic v1.2, a scalable utility and control bus interface for connecting peripherals to a microcontroller or an application processor, streamlining integration and improving cost efficiencies. Version 1.2 reorganizes the specification, with separate sections for mandatory and optional features that can be implemented based on application needs.

This press release features multimedia. View the full release here: https://www.businesswire.com/news/home/20250806050481/en/

MIPI I3C Basic is a rich subset of the member-version MIPI I3C that is licensed on royalty-free terms. The I3C interface, introduced in 2016 and significantly updated to v1.1 in 2019, was designed to build upon the key attributes of the legacy serial interfaces I2C, SPI and UART while making it easier to implement. At the same time, it offers greater performance and power efficiency, and adds a host of features that remove many of the pain points faced by developers.

MIPI I3C Basic has also been the centerpiece of several industry collaborations. It has been adopted by PCI-SIG and NVM Express as a system management bus (SMBus), by JEDEC in its sideband bus and DDR5 standard, by ETSI in its Smart Secure Platform (SSP) and Universal Integrated Circuit Card (UICC), and is an area of focus for a MIPI liaison relationship with DMTF (Distributed Management Task Force).

Users may download the I3C Basic specification on the MIPI website.

Key Use Cases of MIPI I3C and I3C Basic
MIPI I3C technology, implemented on a standard CMOS I/O, uses a two-wire interface and supports in-band interrupts, reducing pin count and signal paths to offer system designers less complexity and more flexibility. It provides a typical data rate of 11.1 Megabits per second (Mbps), with options for higher-performance high-data-rate modes up to 100Mbps, a substantial leap in performance and power efficiency compared with legacy interfaces.

Key use cases include:

Expanding MIPI I3C Ecosystem
A growing list of companies and developer communities are recognizing the flexibility, resilience and design benefits of MIPI I3C and I3C Basic.

The I3C product ecosystem includes microcontrollers, microprocessing units, wireless IoT SoCs (systems on chips), sensors and specialty integrated circuits. A large set of tools is also available to support development and testing—from protocol analyzers to development boards to USB host adapters. Software drivers are available for Linux and the Zephyr real-time OS, and companies have provided reference implementations for their specific products.

MIPI member companies integrating MIPI I3C into their products and services include: Binho LLC; Boréas Technologies Inc.; Diodes Incorporated; Microchip Technology; Montage Technology Co., Ltd.; NXP ® Semiconductors; Prodigy Technovations Pvt. Ltd.; Renesas Electronics Corporation; Robert Bosch GmbH; SmartDV Technologies India Private Limited; STMicroelectronics; Synopsys, Inc.; TDK InvenSense; Teledyne LeCroy; Texas Instruments Incorporated and others.

“The MIPI I3C ecosystem has grown rapidly over the past few years, and we expect this rapid adoption to persist,” said Hezi Saar, chair of MIPI Alliance. “Companies have embraced the I3C interface for its innovative features and substantial improvements in performance and power efficiency compared with legacy interfaces. I3C offers developers exceptional flexibility, making it suitable for a diverse range of products, from smartphones and wearables to data center systems.”

MIPI I3C Developer Support and Resources
To support developers, MIPI has added specifications to facilitate the integration of MIPI I3C, including a Discovery and Configuration specification (DisCo) for I3C, an I3C Host Controller Interface ( MIPI I3C HCI ), a Transfer Command Response Interface ( MIPI I3C TCRI ) and a Debug Over I3C specification, all publicly available. Also, an I3C HCI driver is available in the Linux kernel and an I3C Conformance Test Suite is also available. Further, the newly established I/O Bridges Working Group has begun development of an I/Os over I3C bridge specification, expected to be completed in mid-2026. Updated FAQs and application notes that correspond with I3C/I3C Basic v1.2 will be available soon to download on the I3C webpage. In addition, in late June MIPI held an I3C/I3C Basic Plugfest in Warsaw in conjunction with MIPI Member Meeting #69. Participants from nine companies had the opportunity to engage in interoperability testing between controller and target devices.

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About MIPI Alliance
MIPI Alliance (MIPI) develops interface specifications for mobile and mobile-influenced industries. There is at least one MIPI specification in every smartphone manufactured today. Founded in 2003, the organization has over 375 member companies worldwide and more than 15 active working groups delivering specifications within the extended mobile ecosystem. Members of the organization include handset manufacturers, device OEMs, software providers, semiconductor companies, application processor developers, IP tool providers, automotive OEMs and Tier 1 suppliers, and test and test equipment companies, as well as camera, display, tablet and laptop manufacturers. For more information, please visit www.mipi.org.

MIPI® and I3C® are registered trademarks owned by MIPI Alliance. I3C Basic™, Debug Over I3C™, DisCo™ for I3C, I3C HCI™ and I3C TCRI™ are trademarks owned by MIPI Alliance.

MIPI I3C supports options for higher-performance, high-data-rate modes that can provide speeds in excess of 30 Mbps in single-lane mode without sacrificing a low-power design.

MIPI I3C reduces energy consumption to transfer 1 kB by about 5× to 18× compared with legacy I2C.

MIPI Alliance Releases I3C Basic v1.2 Utility and Control Bus Interface for Mobile, IoT and Data Center Applications

SURIN, Thailand (AP) — Fighting continued to rage Saturday morning along the border of Thailand and Cambodia, even after U.S. President Donald Trump, acting as a mediator, declared that he had won agreement from both countries for a ceasefire.

Thai officials have said they did not agree to a ceasefire, and Cambodia has not commented on Trump’s claim. Its defense ministry instead said Thai jets carried out airstrikes Saturday morning. Cambodian media reported Trump’s claim without elaborating.

The latest large-scale fighting was set off by a skirmish on Dec. 7 that wounded two Thai soldiers and derailed a ceasefire promoted by Trump that ended five days of earlier combat in July over longstanding territorial disputes.

The July ceasefire was brokered by Malaysia and pushed through by pressure from Trump, who threatened to withhold trade privileges unless Thailand and Cambodia agreed. It was formalized in more detail in October at a regional meeting in Malaysia that Trump attended.

About two dozen people have officially been reported killed in this past week’s fighting, while hundreds of thousands have been displaced on both sides of the border.

The Thai military acknowledges 11 of its troops have been killed, while estimating there have been 165 fatalities among Cambodian soldiers. Cambodia has not announced military casualties, but has said at least 11 civilians have been killed and 76 wounded.

Trump on Friday, after speaking to Thai Prime Minister Anutin Charnvirakul and Cambodian Prime Minister Hun Manet, had announced an agreement to restart the ceasefire.

“They have agreed to CEASE all shooting effective this evening, and go back to the original Peace Accord made with me, and them, with the help of the Great Prime Minister of Malaysia, Anwar Ibrahim,” Trump said in his Truth Social post.

Trump’s claim came after midnight in Bangkok. Thai Prime Minister Anutin had after his call with Trump said he had explained Thailand’s reasons for fighting and said peace would depend on Cambodia ceasing its attacks first. The Thai foreign ministry later explicitly disputed Trump’s claim that a ceasefire had been reached. Anutin's busy day on Friday including dissolving Parliament so new elections could be held early next year.

Cambodian Prime Minister Hun Manet, in comments posted early Saturday morning, also made no mention of a ceasefire.

He said he held phone conversations on Friday night with Trump, and a night earlier with Malaysia’s Prime Minister Anwar Ibrahim, and thanked both “for their continuous efforts to achieve a long-lasting peace between Cambodia and Thailand.”

“Cambodia is ready to cooperate in any way that is needed,' Hun Manet wrote.

Thailand has been carrying out airstrikes on what it says are strictly military targets, while Cambodia has been firing thousands of medium-range BM-21 rockets that have caused havoc but relatively few casualties.

BM-21 rocket launchers can fire up to 40 rockets at a time with a range of 30-40 kilometers (19-25 miles). These rockets cannot be precisely targeted and have landed largely in areas from where most people have already been evacuated.

However, the Thai army announced Saturday that BM-21 rockets had hit a civilian area in Sisaket province, seriously injuring two civilians who had heard warning sirens and had been running toward a bunker for safety.

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Peck reported from Bangkok. Sopheng Cheang in Serei Saophoan, Cambodia, and Matthew Lee in Washington contributed to this report.

An evacuee tastes soup as she takes refuge in Banteay Menchey provincial town, Cambodia, Saturday, Dec. 13, 2025, after fleeing from home following fighting between Thailand and Cambodia. (AP Photo/Heng Sinith)

Evacuees cook food as they take refuge in Banteay Menchey provincial town, Cambodia, Saturday, Dec. 13, 2025, after fleeing homes following fighting between Thailand and Cambodia. (AP Photo/Heng Sinith)

Children raise their hands while receiving donation from charity as they take refuge in Banteay Menchey provincial town, Cambodia, Saturday, Dec. 13, 2025, after fleeing homes following fighting between Thailand and Cambodia. (AP Photo/Heng Sinith)

Evacuees wait to receive donation from local charity as they take refuge in Banteay Menchey provincial town, Cambodia, Saturday, Dec. 13, 2025, after fleeing homes following fighting between Thailand and Cambodia. (AP Photo/Heng Sinith)

Village security volunteers and resident run into shelter while the blasts sounded too close in Buriram province, Thailand, Friday, Dec. 12, 2025, following renewed border conflict between Thailand and Cambodia. (AP Photo/Sakchai Lalit)