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R2051 - 2 wire interface Real-Time Clock ICs

Datasheet Summary

Description

Designation of the package.

K: FFP12 S: SSOP16 T: TSSOP10G Serial number of Voltage detector setting etc.

Designation of the taping type.

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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Datasheet Details

Part number R2051
Manufacturer RICOH electronics
File Size 796.07 KB
Description 2 wire interface Real-Time Clock ICs
Datasheet download datasheet R2051 Datasheet
Additional preview pages of the R2051 datasheet.

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    Full PDF Text Transcription

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    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. The 2 alarm interrupt circuits generate interrupt signals at preset times. As the oscillation circuit is driven under constant voltage, fluctuation of the oscillator frequency due to supply voltage is small, and the time keeping current is small (TYP. 0.
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