Moving to a Microchip MCU: Tools and Resources for Migration
Migrating to a new MCU can impact hardware, firmware and development timelines. This blog post highlights practical tools from Microchip—including device cross-referencing, migration guidance and MPLAB® AI Coding Assistant—to help engineers accelerate evaluation and integration.
Finding the Right Microchip MCU
There are many reasons developers may consider moving an existing embedded design to a new microcontroller (MCU). Cost, availability, power consumption, performance, new functionality or long-term platform needs can all create a reason to evaluate a different device.
But once that evaluation begins, one of the first questions is often:
“What Microchip MCU is comparable to the device I’m using today?”
Finding a potential alternative is an important first step, but MCU migration is more than finding a similar part number. Developers also need to understand how the new device differs, what changes may be required and how to validate the new design.
We provide resources to help at each of those stages.
Understand Your Existing Design Requirements
Before evaluating a new MCU, first understand what the existing application requires, including memory, performance, peripherals, real-time behavior, external hardware dependencies and firmware portability.
This baseline makes it easier to compare devices and identify where hardware or software changes may be needed during migration.
That keeps the point from the feedback, but it’s cleaner and less repetitive.
Find a Starting Point With the Cross Reference Tool
The Microchip Cross Reference Tool provides a quick starting point for developers evaluating a move to Microchip.
By entering an existing device, developers can identify comparable Microchip MCUs based on key device characteristics and review device availability, helping narrow the portfolio to potential devices worth evaluating.
The important word is potential. A cross-reference result is a starting point, not a guarantee of a direct one-to-one replacement.
If additional guidance is needed, Microchip FAEs and sales teams can also help evaluate device options and identify the best fit for the application.
The Cross Reference Tool Can Help Identify | Additional Evaluation May Still Be Needed for |
Comparable device characteristics | Pin and package compatibility |
Memory and performance similarities | Peripheral implementation differences |
Available Microchip alternatives | Software and driver compatibility |
Potential devices to evaluate | Application-specific requirements |
The closest device on paper may not always be the best fit. A migration can also be an opportunity to evaluate whether another MCU provides a better combination of cost, power, performance, integration or functionality.
Understand the Migration Before You Start
Finding a potential MCU is only the first step. MCUs from different vendors and device families are rarely identical, so differences in device architecture, peripherals and software will typically require some development work. Peripheral configuration, pin assignments, initialization code, drivers or libraries may need to be adapted.
For example, moving an existing Arm® Cortex®-M-based application to a PIC32CM MCU may require developers to review peripheral mapping, clock and pin configuration and adapt portions of the existing software.
Microchip’s Migration Series, available through migration documents and videos, helps developers understand what to expect, the differences they may encounter and the resources available to support the transition.
Use AI to Help Adapt and Develop Software
Software adaptation is often an important part of moving from one MCU to another.
The MPLAB AI Coding Assistant provides another resource as developers begin working with a new Microchip device. Integrated into Visual Studio Code, it can help developers understand unfamiliar code, answer Microchip-specific development questions and assist with developing or adapting software. Developers can also explore the MPLAB AI Coding Assistant video series for additional examples and guidance on using the tool.
This can be useful when learning how functionality is implemented on a new MCU or working through code that needs to change during a migration.
AI does not eliminate the engineering work involved, but it can help developers understand the new platform and move through software development more efficiently.
Validate the Design With MicroCHECK
After selecting a device and adapting the design, validation becomes an important part of the migration process.
MicroCHECK provides access to Microchip design-review expertise for supported Microchip products. For supported 32-bit PIC and SAM MCU designs, developers can use the service as another resource when reviewing their implementation before moving further toward production.
This adds an important final step. Migration does not stop once the application compiles or the new MCU is placed on a schematic. The hardware implementation still needs to be reviewed and validated as part of the overall design.
Look Beyond a Direct Replacement
Migration can also create an opportunity to improve an existing product.
A better-suited MCU may provide lower power consumption, more integrated peripherals, additional memory or functionality that can help reduce system cost, remove external components or add new capabilities.
Instead of asking only, “What replaces the MCU I have today?”, it can be useful to ask, “What Microchip MCU provides the best solution moving forward?”
Get Started
Moving an embedded design to a new MCU is a process, but resources are available to help along the way.
Identify potential alternatives with the Cross Reference Tool.
Understand the migration path with our migration documents and video series.
Adapt and develop software with the MPLAB AI Coding Assistant.
Validate the design with MicroCHECK.
From the first device search through design review, these resources give developers a clearer path for evaluating a move to Microchip and getting started with the next design.