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RT5C348B

RICOH electronics devices division
Part Number RT5C348B
Manufacturer RICOH electronics devices division
Description 4-wire Serial Interface
Published Aug 20, 2014
Detailed Description 12345 OUTLINE ’11.04.13 4-wire Serial Interface Rx5C348A/B The Rx5C348A/B are CMOS real-time clock ICs connected to t...
Datasheet PDF File RT5C348B PDF File

RT5C348B
RT5C348B

Overview
12345 OUTLINE ’11.
04.
13 4-wire Serial Interface Rx5C348A/B The Rx5C348A/B are CMOS real-time clock ICs connected to the CPU by four signal lines, CE, SCLK, SI, SO, and configured to perform serial transmission of time and calendar data to the CPU.
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.
35µA at 3V: Rx5C348A, TYP.
0.
55µA at 3V: Rx5C348B).
T...


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