RTC-72423A – Integrated Circuit – Epson

RTC-72423A – Real Time Clock IC with Calendar & Leap Year – Epson
The Epson RTC-72423A is a precision real-time clock (RTC) integrated circuit designed for accurate timekeeping and calendar functions in embedded systems. As an obsolete part, PCX provides reliable access to this component for legacy equipment maintenance and repairs. Featuring ultra-low power consumption and a robust parallel interface, it ensures dependable performance in demanding environments.

Key Features

Type: Clock/Calendar with Leap Year compensation
Time Format: HH:MM:SS (12/24 hr)
Date Format: YY-MM-DD-dd
Interface: Parallel
Supply Voltage: 4.5V ~ 5.5V
Ultra-Low Timekeeping Current: 5µA ~ 10µA
Operating Temperature: -40°C ~ 85°C
Package: 24-SOIC (7.90mm Width)

Technical Details
This surface-mount RTC IC maintains precise time/date data with minimal power draw (as low as 5µA). Its parallel interface enables straightforward communication with microcontrollers. The device organizes time in 24-hour or 12-hour formats and dates in year-month-day-weekday sequence. Engineered for industrial resilience, it operates across an extended temperature range (-40°C to 85°C) and is housed in a compact 24-SOIC package (supplier device package: 24-SOP).

Applications

Legacy industrial automation controllers
Medical diagnostic equipment
Embedded computing systems
Test and measurement instruments
Backup power management units

About Epson
Epson is a globally recognized leader in electronic components, renowned for innovation in timing devices and microtechnology. With decades of expertise, Epson delivers high-precision, reliable solutions that meet rigorous industry standards. Their commitment to quality ensures components like the RTC-72423A deliver consistent performance in critical applications.
The company’s dedication to research and development has established Epson as a trusted partner in sectors ranging from industrial automation to consumer electronics. Their RTC ICs are celebrated for low-power efficiency and accuracy, underpinning systems where timing reliability is non-negotiable.

About Real-Time Clock ICs
Real-Time Clock (RTC) integrated circuits are essential for maintaining accurate time and date tracking in electronic systems, even during power loss. They serve as the “calendar backbone” for devices requiring event logging, scheduling, or