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M48T201V85MH1 from ST,ST Microelectronics

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M48T201V85MH1

Manufacturer: ST

3.3V-5V TIMEKEEPER Supervisor

Partnumber Manufacturer Quantity Availability
M48T201V85MH1 ST 853 In Stock

Description and Introduction

3.3V-5V TIMEKEEPER Supervisor The **M48T201V85MH1** is a timekeeping SRAM (Static RAM) module manufactured by **STMicroelectronics (ST)**. Below are the factual details about this component based on its specifications, descriptions, and features:

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

### **Specifications:**  
- **Type:** Non-Volatile SRAM (NVSRAM) with Integrated Real-Time Clock (RTC)  
- **Density:** 256 Kbit (32K x 8)  
- **Supply Voltage:** 4.5V to 5.5V  
- **Operating Temperature Range:** -40°C to +85°C  
- **Access Time:** 85 ns  
- **Package:** 28-pin SOIC (Small Outline Integrated Circuit)  
- **Battery Backup:** Integrated lithium energy source for data retention  
- **Data Retention:** Minimum 10 years in the absence of power  

### **Descriptions:**  
- Combines SRAM with a real-time clock/calendar (RTC) for timekeeping applications.  
- Non-volatile storage ensures data retention during power loss.  
- Designed for embedded systems requiring reliable timekeeping and memory storage.  

### **Features:**  
- **Automatic Power-Fail Detection & Switchover:** Seamlessly switches to battery backup during power loss.  
- **Low Power Consumption:** Optimized for energy efficiency in battery-backed applications.  
- **Century Byte Register:** Supports year 2000 compliance.  
- **Industrial Temperature Range:** Suitable for harsh environments.  
- **JEDEC Standard Pinout:** Compatible with standard SRAM interfaces.  

This information is sourced from STMicroelectronics' official documentation. No additional guidance or suggestions are included.

Application Scenarios & Design Considerations

3.3V-5V TIMEKEEPER Supervisor

Alternative Part Number

  • DS1556W-120 --: Nonvolatile timekeeping RAM with integrated crystal and battery, similar 5V parallel interface and 128K x 8 organization, a common drop-in style alternative for M48T201 series designs.
  • BQ4845S --: Timekeeper SRAM supervisor with embedded battery and crystal, comparable watchdog and RTC functions, suitable replacement when the M48T201V85MH1 is unavailable.
  • DS1746W-120 --: Nonvolatile SRAM with real-time clock in a similar module format, offers equivalent battery-backed timekeeping and parallel memory access for legacy designs.
  • DS17885-5 --: Pin-compatible 5V nonvolatile timekeeping RAM with integrated crystal and battery, similar parallel interface and function to the M48T201V.
  • BQ4802LYP --: 5V nonvolatile timekeeping RAM with embedded battery and crystal, comparable parallel NVSRAM architecture and suitable as a functional replacement.
  • DS1556-5 --: 5V nonvolatile timekeeping RAM module with integrated battery and crystal, offering similar parallel interface and long-term data retention.

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