Microprocessors, CPUs, MCUs & Development Boards
Microprocessors, CPUs, MCUs and related hardware
Explore processor ICs for embedded design and legacy-system service, computer CPUs, microcontrollers, development boards, and processor-support components. This is a broad sourcing collection, not a catalog of interchangeable processors. Check the exact selected model and condition before ordering: some listings contain a single chip, while others offer a board, module, accessory, or multi-piece quantity option.
Identify the type of part first
- Standalone microprocessors and embedded processors: listings include Z80-family DIP-40 CPUs such as Z84C0020PEC, TMPZ84C00AP and related speed grades; 6502-family R6502AP and W65C02; 8086/8088 and i386-era parts; MC6808 and MC68030; Z180/Z8S180, MPC5200, i.MX and other embedded processor packages. A chip alone is not a working computer: it needs the correct board, memory, clock, power and software environment.
- Desktop and notebook CPUs: Intel Core, Xeon, Celeron and Core 2, plus AMD Athlon and Phenom II listings occur here. These are platform-specific replacement parts, including listings described as used. Match the selected processor's precise part number, socket, chipset, BIOS support and thermal limits to your motherboard; matching a family name or pin count alone does not establish compatibility.
- Microcontrollers and DSPs: STM32F103/F407/H743 and other STM32 options, PIC16/PIC18, AVR ATmega328P, STC 8051-family devices, ESP32 modules, RP2040-related boards, ST10, MC9S12 and DSP devices are represented. An MCU integrates control peripherals and is not a drop-in replacement for a Z80, desktop CPU or different MCU variant. Compare memory, peripherals, package, pinout, operating requirements and toolchain for the exact ordering code.
- Boards and learning kits: Arduino UNO Q, Raspberry Pi Pico-style boards, BBC micro:bit and soldering-practice kits appear alongside bare silicon. A board may include connectors and support circuitry, whereas an IC requires a suitable PCB and assembly. UNO Q listings have distinct 02016/04032 options; Pico and micro:bit listings also distinguish board, quantity or package contents. Confirm the chosen option rather than assuming every pictured accessory is included.
- Support ICs, modules and accessories: AD9833 DDS signal-generator modules, MAX691/MAX8211 supervision devices, MAX7219 display modules, RS-485 interface modules, ULN2003 drivers, keypads, power-management ICs and other BGA devices also appear. These are not general-purpose microprocessors. Some BGA listings identify memory or other chipsets, with new, used or tested choices; use the exact option and component markings to determine what is being sold.
How to choose without ordering the wrong part
- Match the full part number. Family prefixes and shortened listing titles can cover different devices. Z84C0004/0006/0008/0020 speed variants, STM32F103 package-and-memory variants, and individual laptop CPU models are separate choices, not an assortment supplied together.
- Check physical format. Listings span DIP-8/DIP-18/DIP-40, PLCC, PGA, QFP/LQFP/TSSOP/SOP, QFN, BGA, LGA and assembled modules. Confirm package suffix, lead count, footprint and mounting process against the target design. A listing's generic package field can conflict with the part number or title; resolve that conflict before purchase.
- Read the selected variant and quantity. A title may list many part numbers while the selected option supplies only one. Other options distinguish 1, 2, 5, 10, 20, 50 or 100 pieces, or board configurations. Labels such as Color can denote a model or bundle rather than a cosmetic choice.
- Verify condition and provenance requirements. Some computer CPUs are explicitly listed as used; other listings present new/used/tested alternatives. Supplier phrases such as 'original' or '100% new' do not establish independent authentication or a collection-wide condition guarantee. Ask for markings, photos and traceability if your project requires them.
- Validate electrical and software fit. Consult the manufacturer's documentation for voltage rails, clocks, interfaces, programming or boot mode and firmware support for the exact part. Do not infer rated power, temperature, certification or universal board compatibility from generic seller specification fields.
Frequently asked questions
Are all items in this collection microprocessors? No. The current assortment also includes computer CPUs, MCU chips, development boards, DSPs, display and signal modules, supervision and driver ICs, and other components. Select by function and exact part number.
Does a product title listing multiple models mean I receive all of them? Usually not. Where the listing has model options, the selected variant determines the model; pack-size options determine quantity. Review the option and product page before checkout.
Can I replace one Z80 or laptop CPU with another from this collection? Not on the family name alone. Check the exact speed grade, package, voltage and bus requirements for legacy processors, or socket, chipset, BIOS and cooling support for PC CPUs.
Is a bare MCU ready to program like a development board? No. A bare IC needs an appropriate circuit and programming setup; a board may bring its own support hardware. Check the board's selected configuration and included items.
Can I use a BGA chip in place of a similarly named module or socketed CPU? No such compatibility is implied. Compare the full ordering code, function, footprint, assembly requirements and manufacturer documentation before purchase.
