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M41T93ZQA6F from STM,ST Microelectronics

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M41T93ZQA6F

Manufacturer: STM

Serial SPI bus real-time clock (RTC) with battery switchover

Partnumber Manufacturer Quantity Availability
M41T93ZQA6F STM 22 In Stock

Description and Introduction

Serial SPI bus real-time clock (RTC) with battery switchover The **M41T93ZQA6F** is a serial real-time clock (RTC) manufactured by **STMicroelectronics (STM)**. Below are its key specifications, descriptions, and features based on factual data:

### **Specifications:**  
- **Interface:** I²C (400 kHz)  
- **Supply Voltage:** 1.3V to 4.4V (operating), 1.0V to 5.5V (battery backup)  
- **Timekeeping Current:** 400nA (typical at 3V)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 8-pin SOIC (150 mil)  
- **Clock Accuracy:** ±5 ppm (±0.432 s/day) at 25°C  
- **Memory:** 64-byte NV SRAM  

### **Descriptions:**  
- Low-power serial RTC with a built-in 32.768 kHz oscillator.  
- Provides seconds, minutes, hours, day, date, month, and year (with leap year compensation up to 2100).  
- Battery backup switchover for uninterrupted timekeeping.  
- Programmable alarm and timer functions.  

### **Features:**  
- **Ultra-Low Power Consumption:** Optimized for battery-powered applications.  
- **Automatic Leap Year Compensation:** Valid up to 2100.  
- **Power-Fail Detection:** Monitors VCC and switches to backup supply.  
- **I²C-Bus Interface:** Supports standard (100 kHz) and fast (400 kHz) modes.  
- **Tamper Detection:** Optional timestamp feature for security applications.  

For exact details, refer to the official **STMicroelectronics datasheet**.

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