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M41ST84W. from ST,ST Microelectronics

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M41ST84W.

Manufacturer: ST

512 BIT (64 X 8) SERIAL RTC WITH SUPERVISORY FUNCTIONS

Partnumber Manufacturer Quantity Availability
M41ST84W.,M41ST84W ST 908 In Stock

Description and Introduction

512 BIT (64 X 8) SERIAL RTC WITH SUPERVISORY FUNCTIONS The M41ST84W is a serial real-time clock (RTC) manufactured by STMicroelectronics. Below are its key specifications, descriptions, and features:  

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

### **Specifications:**  
- **Interface:** I²C (400 kHz)  
- **Supply Voltage:** 2.7V to 5.5V  
- **Timekeeping Current:** 400nA (typical at 3V)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Clock Accuracy:** ±5ppm (±0.432 seconds/day) at 25°C  
- **Memory:** 64 bytes of general-purpose SRAM  
- **Battery Backup:** Supports external battery for timekeeping during power loss  
- **Package:** 8-pin SOIC (150 mil)  

### **Descriptions and Features:**  
- **Real-Time Clock (RTC):** Provides seconds, minutes, hours, day, date, month, and year with leap-year compensation (up to 2099).  
- **Alarm Function:** Programmable alarm with interrupt output.  
- **Watchdog Timer:** Configurable watchdog timer for system monitoring.  
- **Square-Wave Output:** Programmable frequency output (32.768 kHz, 1 kHz, etc.).  
- **Low Power Consumption:** Optimized for battery-backed applications.  
- **Tamper Detection:** Supports external event detection for security applications.  
- **Industrial-Grade:** Suitable for harsh environments with extended temperature range.  

This RTC is commonly used in embedded systems, industrial controls, and consumer electronics requiring accurate timekeeping.

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