General information Type CPU / Microprocessor Family Zilog Z80 CPU part number Z8400APS is an OEM/tray microprocessor Frequency 4 MHz Package 40-pin plastic DIP Socket DIP40 Architecture / Microarchitecture 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 Typical/Maximum power dissipation 0.45 Watt / 1.05 Watt CPU - Zilog Z80A - 4Mhz