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M48T37V-10MH6E from STMicroelectronics,ST Microelectronics

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M48T37V-10MH6E

Manufacturer: STMicroelectronics

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

Partnumber Manufacturer Quantity Availability
M48T37V-10MH6E,M48T37V10MH6E STMicroelectronics 35 In Stock

Description and Introduction

3.3V-5V 256 KBIT (32KB X8) TIMEKEEPER SRAM The **M48T37V-10MH6E** is a Timekeeping RAM (TKRAM) device manufactured by **STMicroelectronics**. Below are its key specifications, descriptions, and features:

### **Specifications:**
- **Memory Type:** Non-Volatile SRAM (NVSRAM) with integrated real-time clock (RTC)  
- **Density:** 32 Kb (4 Kb × 8)  
- **Access Time:** 100 ns  
- **Operating Voltage:** 4.5V to 5.5V  
- **Battery Backup Voltage:** 2.5V to 3.5V (Lithium battery)  
- **Clock Accuracy:** ±1 minute/month at 25°C  
- **Operating Temperature Range:** 0°C to +70°C  
- **Package:** 28-lead SOIC (MH6E)  

### **Descriptions:**
- Combines **SRAM** with an **integrated RTC** and power-fail control circuitry.  
- Maintains timekeeping and data retention during power loss via an embedded lithium energy source.  
- Features a **century byte** for Year 2000 compliance.  
- Includes **automatic leap year compensation**.  

### **Features:**
- **Non-Volatile Storage:** Data retention for over 10 years without power.  
- **Real-Time Clock:** Tracks seconds, minutes, hours, day, date, month, and year.  
- **Low Power Consumption:** Optimized for battery-backed applications.  
- **Power-Fail Detection:** Automatically switches to battery backup on power loss.  
- **Industrial Standard Pinout:** Compatible with JEDEC-standard SRAMs.  

This device is commonly used in **embedded systems, industrial controls, and data logging applications** requiring persistent timekeeping and memory retention.

Application Scenarios & Design Considerations

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

Alternative Part Number

  • DS1244Y-100 --: Pin-compatible nonvolatile timekeeping RAM with integrated battery, similar 32K x 8 organization and 5V operation, widely used as a drop-in alternative to the M48T37V family.
  • BQ4845S --: Nonvolatile timekeeping RAM with embedded battery and RTC, comparable parallel interface and 5V supply, suitable replacement when the M48T37V is unavailable.
  • M48T35Y-70PC1 --: Same manufacturer TIMEKEEPER family with integrated battery-backed SRAM and RTC; lower density but electrically similar and often used when the exact M48T37V variant is not stocked.

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