RX-8581NB:B PURE SN

Description：IC RTC CLK/CALENDAR I2C 22SON
Series：RX-8581NB

SKU:6b95948122c3 Category: Real Time Clocks Brand: EPSON

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Product introduction

Product Detailed Parameters

Description：IC RTC CLK/CALENDAR I2C 22SON
Series：RX-8581NB
Package：Strip
Mfr：EPSON
Type：Clock/Calendar
Features：Alarm
Memory Size：-
Time Format：-
Date Format：-
Interface：I2C
Voltage - Supply：1.8V ~ 5.5V
Voltage - Supply, Battery：-
Current - Timekeeping (Max)：0.8µA ~ 1.2µA @ 3V ~ 5V
Operating Temperature：-40°C ~ 85°C
Mounting Type：Surface Mount
Grade：-
Qualification：-
Package / Case：22-LFDFN
Supplier Device Package：22-SON (6.3x4.8)

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RX-8581NB:B PURE SN

Overview

The RX-8581NB:B PURE SN is a Real Time Clock (RTC) IC manufactured by Epson Timing. It features an I2C-BUS interface and operates within a supply voltage range of 1.6 V to 5.5 V. The device supports a date format of YY-MM-DD-dd and a time format of HH:MM:SS (24 hr). It includes 16 bytes of RAM storage capacity and does not utilize battery backup switching. The component is designed for surface mount installation in a SON-22 package and functions reliably across a temperature range of -40°C to +85°C.

Feature Summary

Supports standard I2C bus communication protocol
Includes integrated alarm functionality
Features leap year compensation capability
Provides onboard volatile memory storage

Applications

Consumer electronics requiring precise timekeeping
Industrial control systems with limited power budgets
Data logging equipment needing calendar tracking
Portable devices utilizing low-voltage operation

Procurement Notes

Verify the specific suffix designation against official documentation, as variations exist between B0 and B3 configurations. Confirm current availability status due to potential end-of-life notifications associated with this product line. Ensure compatibility with existing I2C bus architectures before integration into new designs.

Selection Notes

Select this component when a compact SON-22 footprint is required alongside standard I2C connectivity. Consider the operating voltage range and temperature specifications to ensure suitability for the target environment. Evaluate the need for internal RAM and alarm features against system requirements.

Part Context

This part belongs to the RX-8581NB series of real-time clocks from Epson Timing. These components are engineered for applications demanding accurate time and date tracking with minimal external circuitry. The series typically integrates necessary oscillators and logic to maintain synchronization via serial interfaces.