I3C Cafe - Now Brewing: A New Digital Protocol

Microchip Announces PIC18-Q20 Device Family with I3C Support

Published on Jan 15, 2022

Update: The PIC18Q20 series devices discussed in this post are now available! Visit Microchip's product page for more info.

Microchip recently posted a product brief to their website with little fanfare introducing a new family of PIC18 devices which will be their first to include I3C support.

The family features 6 device variants scaling programing memory, SRAM, pin count / package size, and interestingly enough, the number of I3C peripherals – the larger devices have 2 x I3C peripherals.

DeviceFlashSRAMPin CountI3C Peripheral Count
PIC18F04Q2016KB1KB141
PIC18F14Q2016KB1KB202
PIC18F05Q2032KB2KB141
PIC18F15Q2032KB2KB202
PIC18F06Q2064KB4KB141
PIC18F16Q2064KB4KB202

It's worth noting that these devices only support I3C Target role – they cannot behave as controllers on the I3C bus. That said, I believe these microcontrollers will be the foundation of many of the first I3C Target custom applications. Another interesting feature of these microcontrollers is that they have Multi-Voltage IO Pins, allowing I3C to operate down to 1.0V, with other pins operating at a more traditional range of 1.62V- 5.5V at the same time. The colorful pin diagram below does a great job of showing the different power domains without needing to look it up in tables.

Pinout diagram from the PIC18-Q20 Family Product Brief.

I'm personally excited to see I3C start showing up in Microchip's catalog, and even more so excited to see it show up in smaller / more utilitarian 8-bit microcontrollers. Up till now, the vast majority of I3C peripherals have been in Cortex-M23 and Cortex-M33 devices which are an entirely different beast.

All of the details are now publicly available on Microchip's website. Furthermore, Microchip and Binho have partnered to offer 45-day access to our I3C Basic Protocol Analyzer Plugin included with the purchase of the PIC18F16Q20 Curiosity Nano Evaluation Kit. Learn more about it here.

Already working with I3C? Check out our I3C Basic Protocol Analyzer Plugin for Saleae Logic...

Read More from I3C Cafe...

Renesas Unveils ARM Cortex-M85 Based MCU with I3C Ternary Mode Support

Renesas Unveils ARM Cortex-M85 Based MCU with I3C Ternary Mode Support

Published on Nov 03, 2023

Headlining as the industry's first Cortex-M85 core, this device contains another industry first, details of which are buried a thousand pages deep within the User's Manual

Microchip Launches PIC18-Q20 Curiosity Nano, Partners with Binho for I3C Analyzer

Microchip Launches PIC18-Q20 Curiosity Nano, Partners with Binho for I3C Analyzer

Published on Oct 23, 2023

Microchip's 8-bit MCU offers the fastest path to I3C Target development, especially when paired with Binho tools.

Renesas Announces Latest MCUs with I3C on the Arm Cortex-M33

Renesas Announces Latest MCUs with I3C on the Arm Cortex-M33

Published on Mar 14, 2023

The new Entry Line RA-series MCUs support I3C SDR communications in Controller or Target roles. Still no HDR-DDR mode, but offers a great step up from the limitations of the RA2E2.

MIPI® and I3C® are registered trademarks owned by MIPI Alliance. I3C BasicSM, Debug for I3CSM, I3C HCISM and DisCo for I3CSM are service marks of MIPI Alliance. I3C Cafe is an independent publication (blog) and is not affiliated with nor sponsored or endorsed by the MIPI Alliance. Saleae® and Saleae Logic® are registered trademarks owned by Saleae Inc.