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M41T81M6

Manufacturer: ST

Serial Access Real-Time Clock with Alarms

Partnumber Manufacturer Quantity Availability
M41T81M6 ST 200 In Stock

Description and Introduction

Serial Access Real-Time Clock with Alarms The M41T81M6 is a serial real-time clock (RTC) manufactured by STMicroelectronics. Below are its key specifications, descriptions, and features:

### **Manufacturer Specifications:**
- **Manufacturer:** STMicroelectronics  
- **Part Number:** M41T81M6  
- **Type:** Serial Real-Time Clock (RTC)  

### **Descriptions:**
- The M41T81M6 is a low-power serial RTC with a built-in 32.768 kHz oscillator.  
- It provides accurate timekeeping with seconds, minutes, hours, day, date, month, and year data.  
- It includes an automatic leap-year compensation feature.  
- Operates in both 12-hour and 24-hour formats.  

### **Features:**
- **Low Power Consumption:** Operates at very low power, making it suitable for battery-backed applications.  
- **Serial Interface:** Uses an I²C interface for communication.  
- **Wide Voltage Range:** Operates from **1.8V to 5.5V**, supporting various system voltages.  
- **Battery Backup:** Includes a built-in trickle charger for rechargeable batteries.  
- **Alarm Function:** Programmable alarm with interrupt capability.  
- **Temperature Compensation:** Ensures accurate timekeeping over a wide temperature range.  
- **Small Package:** Available in a **SO8N** package for compact designs.  
- **Extended Temperature Range:** Operates from **-40°C to +85°C**.  

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

Application Scenarios & Design Considerations

Serial Access Real-Time Clock with Alarms

Alternative Part Number

  • DS1307Z+ --: I2C real-time clock in an SOIC-8 package, functionally similar to the M41T81 and widely available as a drop-in style replacement for basic RTC applications.
  • PCF8563T --: Low-power I2C RTC in SOIC-8 with comparable register-based operation, suitable alternative when full feature parity is not required.
  • RV-8564-C3 --: I2C real-time clock module in a small package offering similar timekeeping functionality and low power consumption for replacement designs.

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