MOSTEK - Z80CPU - MK3880N-4 - 0-70C 4MHZ PROC New 40-Dip, New

The MK3880N-4 is a vintage 8-bit microprocessor manufactured by Mostek, which is a licensed second-source clone of the iconic Zilog Z80 CPU. Mostek MK3880N-4 is a second-sourced Zilog Z80 central processing unit (CPU) manufactured by Mostek Corporation. It is an 8-bit vintage microprocessor widely used in desktop computers, arcade systems, and industrial controllers throughout the late 1970s and 1980s.

Technical Specifications

• Architecture: 8-bit Zilog Z80 clone
• Clock Frequency: Maximum 4.0 MHz (indicated by the "-4" suffix, equivalent to a Z80A)
• Package Type: 40-pin Plastic Dual In-line Package (PDIP)
• Operating Temperature: Standard commercial range of 0°C to 70°C
• Pins: 40-pin layout matching standard Z80 socket configurations Type: CPU / Microprocessor
• Dimensions: 2.05" x 0.54" (5.21cm x 1.37cm)

Architecture / Microarchitecture

Manufacturing process: N-channel silicon gate depletion load technology

Data width: 8 Bit

Physical memory: 64 KB

On-chip peripherals: Dynamic memory refresh counter

Electrical / Thermal parameters

V Core: 5V ± 5%

Minimum/Maximum operating temperature: 0°C - 70°C

Maximum power dissipation: 1.05 Watt

Double marked MK3880N-4

Genuine Vintage Mostek – No Counterfeits of Clones – No China – No Delays – No Disappointments

Applications: Primary Applications

Because the Z80 architecture was exceptionally versatile, highly efficient, and easy to interface with dynamic memory, the MK3880N-4 found widespread use across multiple industries during the late 1970s and 1980s:

• Retro Personal and Business Computers: It served as the main brains for standard computing hardware, including modular Mostek STD-Bus (MDX) development systems running CP/M 3. It was also heavily used on expansion cards (such as serial/parallel adapters or early floppy controllers) for 8-bit desktop platforms.
• Arcade and Home Gaming Systems: Used either as the main game logic handler or as a dedicated audio sub-processor. For instance, variant Z80 microprocessors power classic arcade hardware systems like Atari's Pole Position.
• Industrial and Embedded Systems: Highly popular in industrial automation controllers, early smart testing instruments, electronic scales, and laboratory equipment because it excelled at basic I/O and process automation.
• Early Networking and Peripherals: Embedded deeply inside standalone telecom modems, cash registers (Point of Sale terminals), and intelligent external storage disc drives.

 New Old Stock

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