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M48T37Y-70MH1 from ST,ST Microelectronics

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M48T37Y-70MH1

Manufacturer: ST

3.3V-5V 256 KBIT (32KB X8) TIMEKEEPER SRAM

Partnumber Manufacturer Quantity Availability
M48T37Y-70MH1,M48T37Y70MH1 ST 757 In Stock

Description and Introduction

3.3V-5V 256 KBIT (32KB X8) TIMEKEEPER SRAM The **M48T37Y-70MH1** is a **Timekeeping RAM (TKRAM)** device manufactured by **STMicroelectronics (ST)**. Below are its key specifications, descriptions, and features based on factual data:

### **Manufacturer:**  
- **STMicroelectronics (ST)**  

### **Specifications:**  
- **Type:** Timekeeping RAM (TKRAM)  
- **Density:** 32 Kb (4K x 8)  
- **Access Time:** 70 ns  
- **Supply Voltage:** 4.5V to 5.5V  
- **Operating Temperature Range:** Commercial (0°C to +70°C)  
- **Package:** 28-pin **MH** (Modified DIP)  
- **Battery Backup:** Integrated lithium energy source  
- **Data Retention:** Minimum **10 years** in the absence of power  

### **Descriptions:**  
- Combines **SRAM** and **real-time clock (RTC)** functions in a single chip.  
- Includes an **embedded lithium energy source** for data retention during power loss.  
- Provides **seconds, minutes, hours, day, date, month, and year** information with automatic leap-year compensation.  
- Features **binary-coded decimal (BCD)** format for timekeeping registers.  

### **Features:**  
- **Non-volatile SRAM** with battery backup.  
- **Low-power consumption** in standby mode.  
- **Automatic power-fail detection** and switch to battery backup.  
- **Programmable square-wave output** (for clock signals).  
- **Industrial-standard pinout** for compatibility.  
- **Write protection** for timekeeping registers.  

This information is strictly based on the manufacturer's datasheet and technical documentation.

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