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UPD8085A from NEC

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UPD8085A

Manufacturer: NEC

8 Bit Single Chip N Channel Microprocessors

Partnumber Manufacturer Quantity Availability
UPD8085A NEC 45 In Stock

Description and Introduction

8 Bit Single Chip N Channel Microprocessors The UPD8085A is an 8-bit microprocessor manufactured by NEC (Nippon Electric Company).  

### **Specifications:**  
- **Architecture:** 8-bit  
- **Clock Speed:** 3 MHz (typical)  
- **Instruction Set:** Compatible with Intel 8085A  
- **Supply Voltage:** +5V  
- **Technology:** NMOS  
- **Package:** 40-pin DIP (Dual In-line Package)  
- **Address Bus:** 16-bit (64 KB addressable memory)  
- **Data Bus:** 8-bit  
- **Interrupts:** Supports multiple interrupt levels (including TRAP, RST 7.5, RST 6.5, RST 5.5, INTR)  
- **On-Chip Clock Generator:** Yes  
- **Serial I/O Port:** Yes  

### **Descriptions and Features:**  
- The UPD8085A is a second-source version of the Intel 8085A, offering similar functionality.  
- It includes an integrated clock generator, reducing the need for external clock circuitry.  
- Features a multiplexed address/data bus to optimize pin usage.  
- Supports DMA (Direct Memory Access) operations via the HOLD and HLDA signals.  
- Includes a serial I/O port for simple serial communication.  
- Designed for embedded control, industrial, and consumer electronics applications.  
- Fully binary-compatible with the Intel 8085A instruction set.  

This information is based on factual data from NEC's documentation and industry-standard references.

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