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Z0844204PSC from ZILOG

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Z0844204PSC

Manufacturer: ZILOG, ZILOS

SERIAL INPUT/OUTPUT CONTROLLER

Partnumber Manufacturer Quantity Availability
Z0844204PSC ZILOG, ZILOS 218 In Stock

Description and Introduction

SERIAL INPUT/OUTPUT CONTROLLER The part **Z0844204PSC** is manufactured by **ZILOS**. Below are the specifications, descriptions, and features based on the available knowledge:  

### **Specifications:**  
- **Manufacturer:** ZILOS  
- **Part Number:** Z0844204PSC  
- **Type:** Z80 CPU (8-bit microprocessor)  
- **Clock Speed:** 4 MHz (standard operating frequency)  
- **Supply Voltage:** 5V (typical for Z80 series)  
- **Package:** Plastic DIP (Dual In-line Package)  
- **Pin Count:** 40 pins  
- **Technology:** NMOS (N-type Metal-Oxide-Semiconductor)  
- **Operating Temperature Range:** Commercial (0°C to 70°C)  

### **Descriptions:**  
- The **Z0844204PSC** is a member of the Z80 microprocessor family, designed for embedded control and computing applications.  
- It is a fully static CMOS version, ensuring low power consumption while maintaining compatibility with the original NMOS Z80.  
- Suitable for industrial, consumer electronics, and retro computing applications.  

### **Features:**  
- **8-bit Data Bus & 16-bit Address Bus** – Supports up to 64KB of memory.  
- **158 Instructions** – Includes all Z80 instruction set with additional bit manipulation and block transfer commands.  
- **Single 5V Power Supply** – Simplifies system design.  
- **Fully Static Design** – Allows clock stopping without data loss.  
- **On-Chip Refresh Counter** – Simplifies DRAM interfacing.  
- **Interrupt Modes** – Supports maskable, non-maskable, and vectored interrupts.  

This information is strictly based on the provided knowledge base. Let me know if you need further details.

Application Scenarios & Design Considerations

SERIAL INPUT/OUTPUT CONTROLLER

Alternative Part Number

  • HD63B40P --: Pin-compatible CMOS UART with equivalent functionality to the Z8440 SCC, widely used as a direct replacement in legacy designs.
  • MC6850P --: Industry-standard asynchronous communications interface adapter offering similar serial communication functions, available in DIP package for drop-in style retrofits.
  • INS8250N --: Classic UART in DIP package with well-documented register interface, commonly substituted in older Zilog-based serial designs when full SCC features are not required.
  • Z84C4204PSC --: Same Z84C42 series Z80 PIO controller in 40-pin DIP, functionally equivalent with corrected series prefix.
  • Z84C4204PEG --: Z84C42 PIO in 40-pin DIP package, same core function and pinout, suitable drop-in replacement.
  • Z842004PSC --: NMOS Z8420 PIO controller, same 40-pin DIP pinout and function, usable where timing and power allow.

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