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ISL12027IV27AZ from INTERSIL

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ISL12027IV27AZ

Manufacturer: INTERSIL

Real Time Clock/Calendar with EEPROM

Partnumber Manufacturer Quantity Availability
ISL12027IV27AZ INTERSIL 1066 In Stock

Description and Introduction

Real Time Clock/Calendar with EEPROM The ISL12027IV27AZ is a real-time clock (RTC) module manufactured by **INTERSIL** (now part of Renesas Electronics). Below are its key specifications, descriptions, and features based on factual data:

### **Specifications:**
- **Manufacturer:** INTERSIL (Renesas Electronics)  
- **Part Number:** ISL12027IV27AZ  
- **Type:** Real-Time Clock (RTC) with Battery Backup  
- **Supply Voltage:** 2.7V to 5.5V (operating range)  
- **Backup Battery Voltage:** 1.8V to 5.5V  
- **Clock Accuracy:** ±5ppm (typical)  
- **Timekeeping Current:** 400nA (typical) @ 3.3V  
- **Interface:** I²C (400kHz max)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 8-Lead SOIC  

### **Descriptions:**
- The ISL12027IV27AZ is a low-power RTC with an integrated oscillator, providing accurate timekeeping and calendar functions.  
- It includes automatic backup switching to a battery when primary power is lost.  
- Features a programmable alarm and timestamp functionality.  

### **Features:**
- **Battery Backup:** Seamless switchover to battery power.  
- **Low Power Consumption:** Ultra-low standby current for extended battery life.  
- **I²C Interface:** Allows easy communication with microcontrollers.  
- **Alarm Function:** Configurable alarm with interrupt output.  
- **Timestamp Recording:** Captures power failure events.  
- **Oscillator Compensation:** Adjustable for improved accuracy.  
- **EEPROM:** 128 bytes of non-volatile memory for user data.  

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

Application Scenarios & Design Considerations

Real Time Clock/Calendar with EEPROM

Alternative Part Number

  • DS1338Z-33+ --: I2C real-time clock with integrated crystal and 3.3V operation, functionally similar to the ISL12027 and widely available as a drop-in style alternative.
  • PCF8563T/5,518 --: Low-power I2C RTC in SOIC package with similar register-level functionality, a common cross-reference for Intersil RTC devices.
  • M41T81M6F --: Serial I2C real-time clock with battery backup and similar feature set, suitable as a second-source alternative for RTC designs.

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