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Z8440AB1 Specifications

Detailed technical information and Application Scenarios

Product Details

PartNumberManufactorQuantityAvailability
Z8440AB1ST108Yes

Z8440AB1** is a **Z80 CPU** manufactured by **STMicroelectronics (ST)**.

The Z8440AB1 is a Z80 CPU manufactured by STMicroelectronics (ST).

Key Specifications:

  • Architecture: 8-bit
  • Clock Speed: 6 MHz
  • Operating Voltage: 5V
  • Package: 40-pin DIP (Dual In-line Package)
  • Instruction Set: Z80-compatible
  • On-Chip Features:
  • 158 instructions
  • 4 general-purpose registers (A, B, C, D, E, H, L)
  • 4 alternate registers
  • 16-bit address bus (64KB memory addressing)
  • 8-bit data bus
  • Built-in DRAM refresh circuitry
  • Two interrupt modes (maskable and non-maskable)

Features:

  • Compatibility: Fully compatible with the original Zilog Z80
  • Low Power Consumption: CMOS technology variant available
  • Interrupt Handling: Supports vectored and non-vectored interrupts
  • DMA Support: Works with DMA controllers for high-speed data transfer
  • Wide Applications: Used in embedded systems, industrial control, and retro computing

Applications:

  • Embedded control systems
  • Industrial automation
  • Legacy computing (e.g., CP/M systems)
  • Educational microprocessors

This chip is a direct replacement for the original Zilog Z80 in many applications.

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