R2051 Datasheet 2 wire interface Real-Time Clock ICs

Manufacturer: RICOH

R2051 2 wire interface real-time clock ics by RICOH - Datasheet Preview

Datasheet Details

Part number	R2051
Manufacturer	RICOH
File Size	796.07 KB
Description	2 wire interface Real-Time Clock ICs
Download	R2051 Download (PDF)

Overview

R2051 SERIES 2 wire interface Real-Time Clock ICs with Battery Backup switch-over Function NO.EA-104-070626 www.datasheet4u.com OUTLINE The R2051 is a CMOS real-time clock IC connected to the CPU by two signal lines, SCL and SDA, and configured to perform serial transmission of time and calendar data to the CPU.

Further, battery backup switchover circuit and a voltage detector are incorporated.

The periodic interrupt circuit is configured to generate interrupt signals with six selectable interrupts ranging from 0.5 seconds to 1 month.

Key Features

Minimum Timekeeping supply voltage Typ. 0.75V (Max. 1.00V); VDD pin Low power consumption 0.4µA TYP (1.0µA MAX. ) at VDD=3V Built-in Backup switchover circuit (can be used for a primary battery, a secondary battery, or an electric double layer capacitor) Only two signal lines (SCL and SDA) required for connection to the CPU. ( I2.

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