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M41T00S from ST,ST Microelectronics

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M41T00S

Manufacturer: ST, STM

Serial Access Real-Time Clock

Partnumber Manufacturer Quantity Availability
M41T00S ST, STM 2565 In Stock

Description and Introduction

Serial Access Real-Time Clock The M41T00S is a serial real-time clock (RTC) manufactured by STMicroelectronics (ST). Below are the factual specifications, descriptions, and features from Ic-phoenix technical data files:

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

### **Specifications:**  
- **Interface:** I²C (Inter-Integrated Circuit)  
- **Supply Voltage:** 1.3V to 5.5V  
- **Operating Temperature Range:** -40°C to +85°C  
- **Timekeeping Accuracy:** ±2 ppm (±0.1728 seconds/day) at 25°C  
- **Clock Frequency:** 32.768 kHz  
- **Battery Backup Support:** Yes (for timekeeping during power loss)  
- **Low Power Consumption:** Typically 400 nA in battery mode  
- **Memory:** 56 bytes of non-volatile RAM (NV SRAM)  
- **Package Options:** SO8, TSSOP8  

### **Descriptions:**  
The M41T00S is a low-power serial real-time clock with an integrated 32.768 kHz oscillator. It provides accurate timekeeping with battery backup support, ensuring continuous operation during power interruptions. The device communicates via the I²C bus and includes non-volatile RAM for data storage.  

### **Features:**  
- **Battery Backup Operation:** Maintains timekeeping during main power loss.  
- **I²C Bus Interface:** Supports standard (100 kHz) and fast (400 kHz) modes.  
- **Automatic Leap Year Compensation:** Valid up to the year 2100.  
- **Programmable Alarm and Timer Functions:** Supports interrupt output.  
- **Low Power Consumption:** Optimized for battery-powered applications.  
- **Industrial Temperature Range:** Suitable for harsh environments.  
- **RoHS Compliant:** Meets environmental standards.  

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

Application Scenarios & Design Considerations

Serial Access Real-Time Clock

Alternative Part Number

  • DS1307Z+ --: I2C real-time clock in an 8-pin SOIC package with similar function and register-level compatibility; widely available and a common drop-in for M41T00S designs.
  • PCF8563T --: Low-power I2C RTC in SO-8 with comparable supply range and timekeeping features; a well-established alternative when exact pinout matching is not critical.
  • RV-3028-C7 --: Ultra-low-power I2C RTC with similar functionality and small footprint; suitable when lower current consumption is desired, though pinout differs.
  • RX8025T --: I2C real-time clock module with built-in crystal and similar supply/interface characteristics; suitable as a functional alternative where board space and integration matter.

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