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M48T251Y-70PM1 from ST,ST Microelectronics

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M48T251Y-70PM1

Manufacturer: ST

5.0 OR 3.3V, 4096K TIMEKEEPER%AE SRAM WITH PHANTOM

Partnumber Manufacturer Quantity Availability
M48T251Y-70PM1,M48T251Y70PM1 ST 98 In Stock

Description and Introduction

5.0 OR 3.3V, 4096K TIMEKEEPER%AE SRAM WITH PHANTOM The **M48T251Y-70PM1** is a timekeeping SRAM (Static Random Access Memory) device manufactured by **STMicroelectronics (ST)**. Below are its key specifications, descriptions, and features:

### **Specifications:**
- **Memory Type:** Non-volatile SRAM (NVSRAM) with a built-in real-time clock (RTC).  
- **Memory Capacity:** 256 Kb (32 KB).  
- **Access Time:** 70 ns.  
- **Operating Voltage:** 4.5V to 5.5V.  
- **Data Retention:** Minimum 10 years with power applied.  
- **Clock Accuracy:** ±1 minute per month at 25°C.  
- **Package:** 28-pin DIP (Dual In-line Package).  
- **Operating Temperature Range:** 0°C to +70°C (commercial grade).  
- **Interface:** Parallel.  

### **Descriptions:**
- Combines **SRAM and a real-time clock (RTC)** in a single chip.  
- **Battery-backed** to maintain data and timekeeping during power loss.  
- Features an **integrated quartz crystal** for accurate timekeeping.  
- Used in applications requiring **non-volatile memory with timekeeping**, such as industrial controllers, networking equipment, and embedded systems.  

### **Features:**
- **Automatic battery switchover** for uninterrupted operation.  
- **Low-power consumption** in battery backup mode.  
- **Century byte** support for year 2000 compliance.  
- **Programmable square wave output.**  
- **Industrial-grade reliability** with long-term data retention.  

This device is designed for systems requiring **reliable timekeeping and non-volatile memory storage** without external components.

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