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RENESAS ISL1220IUZT Real Time Clock

The ISL1220 is a low power real-time clock featuring crystal compensation, clock/calendar functions, alarm with alarm/IRQ outputs, automatic backup switching, battery-backed SRAM, and an external 32.768kHz crystal oscillator for precise timekeeping through 2099, including leap year correction. It supports power fail detection, configurable frequency output, and low power operation modes, making it suitable for applications like utility meters, home automation, and industrial equipment. The device operates from 2.0V to 5.5V, with an accurate internal oscillator and programmable alarm modes for versatile timing solutions.

Authorized Distributors
Part No:ISL1220IUZ-T
Stock:0
Inv Date:06-07-2026
Price: N/A
Buy/RFQ:

RENESAS ISL1220IUZT Real Time Clock Specifications:

  • Supply Voltage Range: 2.0V to 5.5V
  • Crystal Frequency: 32.768kHz with external crystal
  • Operating Temperature: -40°C to +85°C
  • Current Consumption: 400nA (battery supply)
  • Power Fail Detection: RTC Fail Bit (RTCF)
  • Backup Power Input: Vgat pin supports battery or Super Cap backup
  • Crystal Load Capacitance: 12.5pF typical, adjustable via ATR
  • Accuracy Adjustment: Analog trimming (-34 to +80ppm) and digital trimming (-60 to +60ppm)
  • Alarm Modes: Single event or periodic interrupt, with alarm registers for second, minute, hour, date, and day of week
  • Frequency Output: Programmable up to 32kHz, open-drain output
  • Serial Interface: I2C compatible with 400kHz speed
  • Real Time Clock Registers: BCD format for seconds, minutes, hours, date, month, year, and day of week
  • Battery-Backed SRAM: 8 bytes with continuous operation during power loss
  • Pin Count: 10 lead MSOP package
  • Features include power fail indicator, automatic backup switching, and configurable output modes.

Buy the Buy Intersil RTC Part Number ISL1220IUZT Online

Purchase the Intersil RTC ISL1220IUZT online today for accurate timekeeping with crystal compensation, alarm capability, battery backup, and programmable outputs. This low power RTC features a 32.768kHz crystal oscillator, automatic leap year correction, and integrated SRAM, ensuring reliable operation in industrial, automotive, and consumer electronics. Its versatile features include power fail detection, configurable frequency output, and a compact MSOP package, making it an ideal choice for precise, high-quality timing solutions in various embedded systems.

Get Intersil RTC ISL1220IUZT today—built for precision, low power consumption, and reliable backup, ideal for industrial, automotive, and home automation projects.

Frequently Asked Questions

Where can I buy RENESAS ISL1220IUZT?

You can click on the BUY or RFQ button to purchase ISL1220IUZT from an authorized RENESAS distributor.

How do I troubleshoot issues or seek technical support for part ISL1220IUZT?

You can download the ISL1220IUZT datasheet or visit the RENESAS website for support.

Who is the manufacturer of ISL1220IUZT?

RENESAS

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