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M41ST85WMX6TR from ST,ST Microelectronics

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M41ST85WMX6TR

Manufacturer: ST

512 Kbit (64 Bit x8) Serial Access RTC and NVRAM Supervisor

Partnumber Manufacturer Quantity Availability
M41ST85WMX6TR ST 5000 In Stock

Description and Introduction

512 Kbit (64 Bit x8) Serial Access RTC and NVRAM Supervisor The M41ST85WMX6TR is a real-time clock (RTC) manufactured by STMicroelectronics. Below are its key specifications, descriptions, and features:

### **Specifications:**  
- **Supply Voltage:** 2.7V to 5.5V  
- **Operating Temperature Range:** -40°C to +85°C  
- **Timekeeping Current:** 400nA (typical) at 3V  
- **Clock Accuracy:** ±5ppm (±0.432 seconds/day) at 25°C  
- **Interface:** I²C (400kHz)  
- **Package:** 8-pin SOIC  

### **Descriptions:**  
- The M41ST85WMX6TR is a low-power serial real-time clock with an embedded 32.768kHz oscillator.  
- It includes a built-in power-sense circuit for automatic switchover to backup supply.  
- Features a programmable alarm, watchdog timer, and timestamp function.  
- Provides year, month, day, weekday, hours, minutes, and seconds in BCD format.  

### **Features:**  
- **Battery Backup:** Automatic switchover to a backup supply when main power fails.  
- **Low Power Consumption:** Ultra-low standby current for extended battery life.  
- **Alarm Function:** Programmable alarm with interrupt output.  
- **Watchdog Timer:** Configurable timeout period for system monitoring.  
- **Timestamp:** Records power-up and power-down events.  
- **Industrial Temperature Range:** Suitable for harsh environments.  

This RTC is commonly used in applications requiring precise timekeeping, such as industrial systems, medical devices, and consumer electronics.

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