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M41T80 from ST,ST Microelectronics

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M41T80

Manufacturer: ST

SERIAL ACCESS RTC WITH ALARMS

Partnumber Manufacturer Quantity Availability
M41T80 ST 930 In Stock

Description and Introduction

SERIAL ACCESS RTC WITH ALARMS The M41T80 is a serial real-time clock (RTC) manufactured by STMicroelectronics. Below are its specifications, descriptions, and features based on factual information from Ic-phoenix technical data files:

### **Specifications:**
- **Interface:** I²C (400 kHz)
- **Operating Voltage:** 1.3V to 4.4V  
- **Timekeeping Current:** 400nA (typical at 3V)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Clock Accuracy:** ±5 ppm (±0.432 seconds/day) at 25°C  
- **Package Options:** SO8, TSSOP8  

### **Descriptions:**
- The M41T80 is a low-power serial RTC with a built-in 32.768 kHz oscillator.  
- It provides timekeeping functions (seconds, minutes, hours, day, date, month, year) with leap-year compensation up to 2099.  
- It includes an integrated power-fail detection circuit and automatic switchover to battery backup.  
- The device supports programmable alarms and timer functions.  

### **Features:**
- **Low Power Consumption:** Ultra-low battery current for extended backup operation.  
- **Battery Backup:** Operates down to 1.3V for extended battery life.  
- **Timekeeping Memory:** 56 bytes of general-purpose SRAM.  
- **Alarm Function:** Configurable alarm with interrupt output.  
- **Watchdog Timer:** Programmable watchdog timer for system monitoring.  
- **Square-Wave Output:** Configurable frequency output (32.768 kHz to 1 Hz).  
- **Industrial Temperature Range:** Suitable for harsh environments.  

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

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