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M48T201V85MH1TR from STM,ST Microelectronics

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M48T201V85MH1TR

Manufacturer: STM

3.3V-5V TIMEKEEPER Supervisor

Partnumber Manufacturer Quantity Availability
M48T201V85MH1TR STM 1200 In Stock

Description and Introduction

3.3V-5V TIMEKEEPER Supervisor The **M48T201V85MH1TR** is a Timekeeper SRAM manufactured by **STMicroelectronics (STM)**. Below are the factual specifications, descriptions, and features from Ic-phoenix technical data files:

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

### **Specifications:**  
- **Type:** Non-Volatile SRAM (NVSRAM)  
- **Density:** 2 Mbit (256K x 8)  
- **Voltage Supply:** 4.5V to 5.5V  
- **Access Time:** 85 ns  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 28-pin SOIC (MH)  
- **Interface:** Parallel  
- **Battery Backup:** Integrated lithium energy source  
- **Data Retention:** Minimum 10 years without power  

### **Descriptions:**  
- Combines SRAM with non-volatile storage, ensuring data retention during power loss.  
- Includes an embedded lithium energy source for backup.  
- Suitable for applications requiring persistent memory with fast SRAM access.  

### **Features:**  
- **Automatic Power-Fail Chip Deselect:** Protects data during power transitions.  
- **Battery Monitor:** Provides low-battery warning.  
- **Industrial Temperature Range:** Supports harsh environments.  
- **JEDEC Standard Pinout:** Compatible with other SRAMs.  
- **High Reliability:** Ensures long-term data retention.  

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

Application Scenarios & Design Considerations

3.3V-5V TIMEKEEPER Supervisor

Alternative Part Number

  • DS1554W-150 --: Nonvolatile timekeeping RAM with integrated crystal and battery, similar 5V/3.3V supervisory function and parallel interface, a common drop-in style alternative for ST M48T series timekeepers.
  • BQ4845S --: Real-time clock with nonvolatile SRAM and battery backup, comparable watchdog and power-fail monitoring features, suitable replacement when the ST part is unavailable.
  • M48T59Y-70PC1 --: Same ST TIMEKEEPER family architecture with embedded battery and crystal, different density/speed variant that can serve as a functional substitute in many designs.

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