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X1228S14-2.7A from INTERSIL

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X1228S14-2.7A

Manufacturer: INTERSIL, XICOR

Real Time Clock/Calendar/CPU Supervisor with EEPROM

Partnumber Manufacturer Quantity Availability
X1228S14-2.7A,X1228S1427A INTERSIL, XICOR 39 In Stock

Description and Introduction

Real Time Clock/Calendar/CPU Supervisor with EEPROM The part **X1228S14-2.7A** is manufactured by **Intersil** (now part of Renesas Electronics). Below are the factual details from Ic-phoenix technical data files:  

### **Specifications:**  
- **Manufacturer:** Intersil (Renesas Electronics)  
- **Part Number:** X1228S14-2.7A  
- **Type:** Real-Time Clock (RTC) with EEPROM  
- **Supply Voltage:** **2.7V** (operating range: **2.7V to 5.5V**)  
- **Interface:** **I²C** (2-wire serial interface)  
- **Clock Accuracy:** ±5ppm (typical)  
- **Timekeeping Current:** **400nA** (typical at 3V)  
- **EEPROM Size:** **256 bytes** (non-volatile memory)  
- **Alarms:** Two programmable alarms  
- **Package:** **14-pin SOIC** (150mil)  

### **Descriptions & Features:**  
- **Integrated RTC & EEPROM:** Combines a real-time clock with non-volatile memory.  
- **Low Power Consumption:** Ultra-low battery current for extended operation.  
- **Automatic Backup:** Switches to battery power during main power loss.  
- **Clock/Calendar:** Tracks seconds, minutes, hours, day, date, month, and year (leap-year compensated).  
- **Programmable Square Wave Output:** Configurable frequency output.  
- **Watchdog Timer:** Includes a watchdog function for system monitoring.  
- **Industrial Temperature Range:** **-40°C to +85°C**.  

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

Application Scenarios & Design Considerations

Real Time Clock/Calendar/CPU Supervisor with EEPROM

Alternative Part Number

  • ISL1228S14-2.7A --: Same device family rebranded under Renesas/Intersil ISL prefix; identical function, package and 2.7V threshold, direct drop-in replacement.
  • MAX6442KADGTD3 --: Comparable single-channel voltage supervisor/monitor with similar 2.7V threshold and SOT-14 style package; suitable functional alternative with different naming series.
  • TPS3808G27DBVR --: Low-power voltage supervisor with 2.7V-class threshold in small SOT package; widely available alternative for supply monitoring applications.
  • ISL1208IB8Z --: Real-time clock/calendar IC with I2C interface and similar 2.7V operation; Renesas acquired the Xicor/Intersil RTC line, making this a close functional replacement.
  • DS1307Z+ --: Widely available I2C real-time clock in an 8-pin SOIC package, functionally comparable for timekeeping applications and easy to source.
  • PCF8563T --: Low-power I2C real-time clock/calendar in SO-8, operating down to 2.5V, suitable as a functional alternative with broad availability.

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