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X1226S8I from XICOR

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X1226S8I

Manufacturer: XICOR, INTERSIL

Real Time Clock/Calendar with EEPROM

Partnumber Manufacturer Quantity Availability
X1226S8I XICOR, INTERSIL 673 In Stock

Description and Introduction

Real Time Clock/Calendar with EEPROM **Part X1226S8I Manufacturer: INTERSIL**  

### **Specifications:**  
- **Type:** Real-Time Clock (RTC) with Non-Volatile Memory  
- **Package:** 8-SOIC (Small Outline Integrated Circuit)  
- **Interface:** I²C (Inter-Integrated Circuit)  
- **Operating Voltage:** 2.7V to 5.5V  
- **Clock Accuracy:** ±5ppm (typical)  
- **Memory:** 256 bytes of non-volatile EEPROM  
- **Timekeeping Current:** 400nA (typical)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Battery Backup Support:** Yes (for continuous timekeeping)  

### **Descriptions:**  
The **X1226S8I** is a low-power RTC with integrated EEPROM, designed for applications requiring accurate timekeeping and data storage. It features an I²C interface for communication with microcontrollers and supports battery backup to maintain timekeeping during power loss.  

### **Features:**  
- **Battery-Backed RTC:** Maintains timekeeping during power interruptions.  
- **Low Power Consumption:** Ultra-low standby current for extended battery life.  
- **EEPROM Storage:** 256 bytes for user data storage.  
- **Automatic Leap Year Compensation:** Handles leap years up to 2100.  
- **Alarm Function:** Programmable alarm with interrupt output.  
- **Power-Fail Detection:** Monitors VCC and switches to backup supply if needed.  
- **I²C Interface:** Supports standard (100kHz) and fast (400kHz) modes.  

This part is commonly used in embedded systems, industrial controls, and consumer electronics requiring reliable timekeeping and data retention.

Application Scenarios & Design Considerations

Real Time Clock/Calendar with EEPROM

Alternative Part Number

  • DS1307Z+ --: I2C real-time clock in an 8-pin SOIC package, functionally similar to the X1226 and widely available from a different vendor.
  • PCF8563T --: Low-power I2C RTC in an 8-pin SO package with comparable register interface, offering a distinct series as a drop-in style alternative.
  • M41T81M6F --: I2C serial RTC with similar supply range and 8-pin SOIC footprint, providing a third-source option for the X1226S8I.

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