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ISL12020M from INTERSIL

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ISL12020M

Manufacturer: INTERSIL

Real Time Clock with Embedded Crystal, ?ppm Accuracy

Partnumber Manufacturer Quantity Availability
ISL12020M INTERSIL 2545 In Stock

Description and Introduction

Real Time Clock with Embedded Crystal, ?ppm Accuracy The ISL12020M is a real-time clock (RTC) device manufactured by **INTERSIL** (now part of **Renesas Electronics**). Below are its key specifications, descriptions, and features based on Ic-phoenix technical data files:

### **Specifications:**
- **Supply Voltage:** 2.7V to 5.5V  
- **Timekeeping Current:** 400nA (typical) at 3.3V  
- **Clock Accuracy:** ±5ppm (±0.432 seconds/day) from 0°C to +40°C  
- **Operating Temperature Range:** -40°C to +85°C  
- **I²C Interface:** Supports standard (100kHz) and fast (400kHz) modes  
- **Battery Backup:** Supports external battery or supercapacitor  
- **EEPROM:** 128 bytes of non-volatile user memory  

### **Descriptions:**
- The ISL12020M is a low-power RTC with an integrated oscillator and automatic battery backup switching.  
- It provides timekeeping (seconds, minutes, hours, day, date, month, year) with leap-year compensation up to 2099.  
- Features an alarm function and programmable square-wave output.  
- Designed for applications requiring precise timekeeping with minimal power consumption.  

### **Features:**
- **Low Power Consumption:** Ultra-low standby current for battery-powered applications.  
- **Automatic Battery Backup:** Seamless switch to backup power when main power fails.  
- **Alarm Function:** Configurable alarm with interrupt output.  
- **Oscillator Compensation:** Built-in digital trimming for improved accuracy.  
- **Small Package:** Available in 8-lead SOIC and 8-lead TSSOP packages.  

This information is strictly factual from the manufacturer's datasheet.

Application Scenarios & Design Considerations

Real Time Clock with Embedded Crystal, ?ppm Accuracy

Alternative Part Number

  • DS3231M --: Highly accurate I2C real-time clock with integrated crystal and temperature compensation, functionally similar to the ISL12020M and widely available.
  • PCF8563 --: Low-power I2C real-time clock/calendar with similar interface and register-level functionality, suitable as a drop-in alternative in many designs.
  • M41T81 --: I2C serial real-time clock with alarm and watchdog features, comparable to the ISL12020M for timekeeping applications.

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