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M27256-25F1 from ST,ST Microelectronics

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M27256-25F1

Manufacturer: ST

NMOS 64K 8K x 8 UV EPROM

Partnumber Manufacturer Quantity Availability
M27256-25F1,M2725625F1 ST 4000 In Stock

Description and Introduction

NMOS 64K 8K x 8 UV EPROM The part **M27256-25F1** is a **256K (32K x 8) UV erasable and electrically programmable read-only memory (EPROM)** manufactured by **STMicroelectronics (ST)**.  

### **Key Specifications:**  
- **Memory Size:** 256Kbit (32K x 8)  
- **Access Time:** 250ns  
- **Supply Voltage:** 5V ±10%  
- **Operating Temperature Range:** Commercial (0°C to +70°C)  
- **Package:** 28-lead PDIP (Plastic Dual In-line Package)  
- **Technology:** UV erasable, CMOS  
- **Programming Voltage (VPP):** 12.5V  

### **Features:**  
- **Low Power Consumption:**  
  - Active current: 30mA (max)  
  - Standby current: 100μA (max)  
- **Fast Read Access Time:** 250ns  
- **Single 5V Power Supply for Read Operation**  
- **Programmable and Erasable:**  
  - UV light erasable (typically 15-20 minutes under UV lamp)  
  - Electrically programmable  
- **Compatibility:** Industry-standard pinout (JEDEC)  
- **Reliability:** High endurance (typically 100 programming cycles)  

This EPROM is commonly used in embedded systems, firmware storage, and legacy computing applications.

Application Scenarios & Design Considerations

NMOS 64K 8K x 8 UV EPROM

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