Microcontrollers and Digital Signal Controllers for Sale
Key Takeaways
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Find the exact controller for your production run, replacement board, or equipment repair. Summit Electronics helps you source current, hard-to-find, and obsolete microcontrollers and digital signal controllers by complete manufacturer part number.
When you search for microcontrollers for sale, a matching family name is only the starting point. Your board, firmware, package, and operating conditions determine which device you can use. We help you locate sourcing options for your specified part so your engineering team can confirm the fit before you order.
Request a Quote for Your Controller
Send us your complete part number, quantity, required delivery date, and any date-code or condition requirements. Include your approved manufacturer and alternates, if available. We will review your request and confirm available sourcing options, pricing, and lead time.
Call (561) 226-8500 or email moc.scinortceletimmus@selas.
Microcontrollers and Digital Signal Controllers Explained
A microcontroller, or MCU, combines a processor, memory, and peripherals used to read inputs and control outputs. It runs the firmware that tells an embedded system how to operate. Equipment controllers, communications boards, and industrial electronics use MCUs for many different tasks.
A digital signal controller, or DSC, combines microcontroller functions with digital signal processing capabilities. Families such as NXP’s MC56F devices support applications that need fast sensing and control, including motor control and power conversion. An MCU and a DSC are not automatically interchangeable.
Controller Part Numbers for Your Sourcing Request
The following part numbers are examples from Summit’s sales history. Ask us about current availability for the exact device you need. These examples are not an in-stock list, and the parts are not substitutes for one another.
Manufacturer part number | Manufacturer or lineage | Device type |
|---|---|---|
MC56F8322MFAE | NXP / Freescale | Digital signal controller |
MC56F8322VFA60 | NXP / Freescale | Digital signal controller |
MC56F84565VLK | NXP / Freescale | Digital signal controller |
MC56F8365MFGE | NXP / Freescale | Digital signal controller |
LPC2368FBD100 | NXP | Arm7 based microcontroller |
MC68HC11F1CFN3 | Motorola / Freescale / NXP lineage | 8 bit microcontroller |
Match the Details Before You Buy
Two controllers can share a family name and still differ in ways that prevent a board from working. Use the manufacturer datasheet and your approved bill of materials to check the exact ordering code.
Before ordering, compare the complete manufacturer part number, including its suffix, with your approved bill of materials and datasheet. Confirm the package, pinout, memory, peripherals, voltage, clock requirements, and temperature range suit your board. Get engineering approval before accepting a different ordering code.
Tell us if you need blank or programmed devices, and confirm you have the firmware, tools, and access needed for programming. Specify your condition, date-code, packaging, traceability, and testing requirements so we can assess sourcing options against your purchasing criteria.
Source Hard to Find and Obsolete Microcontrollers
An unavailable controller can hold up an otherwise complete assembly or repair. Send us the original ordering code rather than only the equipment model or a shortened chip marking. If the marking is unclear, include a sharp photograph and any available datasheet or bill of materials.
We support MCU sourcing for current and legacy requirements. A device’s age does not by itself establish that it is obsolete. Lifecycle status and availability must be checked for the specific part. If your original device cannot be sourced, your engineering team should approve any proposed alternative before purchase.
Keep Firmware Compatibility in the Purchasing Decision
Replacing a controller is more than matching voltage and pin count. A different device may require firmware changes, a different programming process, or board modifications. Even a matching controller may need your application firmware loaded before it can operate in the equipment.
Tell us whether you need production quantities, spare parts for maintenance, or a replacement for a failed board. That context helps us understand the sourcing request without assuming that another member of the family will work.
Explore our integrated circuit sourcing options
Read our comparison of popular microcontroller units for IoT applications
Questions Buyers Ask About MCU Sourcing
Can you help source a controller that is not listed here?
Yes. Send us the full manufacturer part number and quantity. The examples on this page cover only a small selection of controller requests; availability is confirmed when we review your inquiry.
Are all of the featured controllers obsolete?
No. This page includes examples from sales history, not a list of discontinued products. We check the exact device and sourcing options for your request.
Can I use another controller in the same family?
Only after your engineering team confirms compatibility. Package, pinout, memory, peripherals, electrical ratings, and firmware support can vary within a family.
Will a replacement microcontroller arrive programmed?
Do not assume that it will. State your programming requirements when requesting a quote. A replacement device may require your firmware and suitable programming equipment before installation.
What should I send to get a useful quote?
Provide the complete part number, manufacturer, quantity, delivery deadline, and any condition, date-code, packaging, testing, or traceability requirements. Include only engineering-approved alternatives.
Get Help Sourcing Your Next Controller Order
Whether you need microcontrollers for sale for a scheduled production run or a hard-to-find digital signal controller for a legacy repair, start with the exact part number. We will review your requirements and help you identify available sourcing options.
Send your part number and request a quote
Click here or call us toll-free at (800) 226-6960.