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M41T56M6E from ST,ST Microelectronics

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M41T56M6E

Manufacturer: ST

512 Bit (64B X8) Serial Access TIMEKEEPER SRAM

Partnumber Manufacturer Quantity Availability
M41T56M6E ST 2593 In Stock

Description and Introduction

512 Bit (64B X8) Serial Access TIMEKEEPER SRAM The M41T56M6E is a serial real-time clock (RTC) manufactured by STMicroelectronics. Below are its key specifications, descriptions, and features:

### **Specifications:**
- **Supply Voltage:** 2.0V to 5.5V  
- **Low Power Consumption:**  
  - 400nA in battery backup mode (Typical)  
- **Clock Accuracy:** ±2ppm from 0°C to +40°C  
- **Operating Temperature Range:** -40°C to +85°C  
- **Interface:** I²C (400kHz)  
- **Timekeeping Current:** 25µA (Typical at 3V)  
- **Package:** SO8 (150mil)  

### **Descriptions:**
- The M41T56M6E is a low-power serial RTC with a built-in 32.768kHz oscillator.  
- It provides timekeeping functions, including seconds, minutes, hours, day, date, month, and year (with leap year compensation up to 2099).  
- Includes a programmable alarm and timer functions.  
- Features a power-fail detection circuit and automatic switch to battery backup.  

### **Features:**
- **Battery Backup Operation:** Maintains timekeeping during power loss.  
- **Clock/Calendar:** Tracks time in 12-hour or 24-hour format.  
- **Alarm Function:** Programmable with interrupt capability.  
- **Timer Function:** Countdown timer with interrupt.  
- **Power Management:** Automatic power-fail detection and switchover.  
- **Tamper Detection:** Optional timestamp on supply voltage drop.  
- **Industrial Temperature Range:** Suitable for harsh environments.  

This device is commonly used in applications requiring precise timekeeping, such as industrial systems, meters, and embedded systems.

Application Scenarios & Design Considerations

512 Bit (64B X8) Serial Access TIMEKEEPER SRAM

Alternative Part Number

  • DS1307Z+ --: I2C real-time clock with 56 bytes of battery-backed RAM, functionally equivalent to the M41T56 and available in an SOIC-8 package.
  • PCF8563T --: Widely used I2C RTC in SOIC-8 with similar register-level functionality and low power consumption, suitable as a drop-in replacement in most designs.
  • RX8025T --: I2C real-time clock module with built-in crystal and comparable pinout/functionality, offering good availability as an alternative RTC solution.

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