Products > Integrated Circuits (ICs) > Interface ICs > RV5C348B
  • RV5C348B

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  • Package/Case :
  • SSOP10
  • Product Categories :
  • Interface ICs
  • RoHs Status:
  • Lead free/RoHS Compliant
  • In-stock:
  • 8820


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RV5C348B Product Details

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). The oscillation halt sensing circuit can be used to judge the validity of internal data in such events as power-on; The supply voltage monitoring circuit is configured to record a drop in supply voltage below two selectable supply voltage monitoring threshold settings. The 32.768kHz clock output function (N-channel open drain output) is intended to output sub-clock pulses for the external microcomputer. The 32-kHz clock circuit can be disabled by certain register settings for the Rx5C348A but cannot be disabled by any register settings for the Rx5C348B. The oscillation adjustment circuit is intended to adjust time counts with high precision by correcting deviations in the oscillation frequency of the crystal oscillator. These models come in an ultra-compact SSOP10 (RS5C348A/B), SSOP10G (RV5C348A/B), TSSOP10G (RT5C348B)


● Timekeeping supply voltage ranging from 1.45 to 5.5V
● Low power consumption
Rx5C348A: 0.35µA TYP (0.8µA MAX) at VDD=3V
Rx5C348B: 0.55µA TYP (1.0µA MAX) at VDD=3V
● Only four signal lines (CE, SCLK, SI, and SO) required for connection to the CPU.
● Maximum clock frequency of 2 MHz (with VDD = 5V)
● Time counters (counting hours, minutes, and seconds) and calendar counters
(counting years, months, days, and weeks) (in BCD format)
● Interrupt circuit configured to generate interrupt signals
(with interrupts ranging from 0.5 seconds to 1 month)
to the CPU and provided with an interrupt flag and an interrupt halt
● 2 alarm interrupt circuits
(Alarm_W for week, hour, and minute alarm settings and Alarm_D
for hour and minute alarm settings)
● 32-kHz clock output circuit (Nch. open drain output)
● The Rx5C348A is designed to disable 32-kHz clock output in response to a command
from the host computer and the Rx5C348B is designed to keep 32-kHz output enabled.
● Oscillation halt sensing circuit which can be used to judge the validity of internal data
● Supply voltage monitoring circuit with two supply voltage monitoring threshold settings
● Automatic identification of leap years up to the year 2099
● Selectable 12-hour and 24-hour mode settings
● Built-in oscillation stabilization capacitors (CG and CD)
● High precision oscillation adjustment circuit
● Ultra-compact SSOP10 (RS5C348A/B), SSOP10G (RV5C348A/B), TSSOP10G (RT5C348B)
● CMOS process

Technical Parameters

  • Manufacturer
  • Packing
  • Tape & Reel (TR)/Cut Tape (CT)/Tray/Tube
  • RoHs Status
  • Lead free/RoHS Compliant
  • Package/Case
  • SSOP10

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Estimated Delivery Time: Jan 24 - Jan 29 days (choose Expedited at checkout).

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    90 days quality guarantee for all products.


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We will inspect all the goods before shipment,ensure all the products at good condition and ensure the parts are new originalmatch datasheet.

After all the goods are ensure no problems afterpacking, we will packing safely and send by global express. It exhibitsexcellent puncture and tear resistance along with good seal integrity.

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1.We provide 90 days warranty.

2.If some of the items you received aren't of perfect quality, we would resiponsibly arrange your refund or replacement. But the items must remain their orginal condition.


Q: How does Jotrin guarantee that RV5C348B is the original manufacturer or agent of RICOH?
We have a professional business development department to strictly test and verify the qualifications of RICOH original manufacturers and agents. All RICOH suppliers must pass the qualification review before they can publish their RV5C348B devices; we pay more attention to the channels and quality of RV5C348B products than any other customer. We strictly implement supplier audits, so you can purchase with confidence.
Q: How to find the detailed information of RV5C348B chips? Including RICOH original factory information, application, RV5C348B pictures?
You can use Jotrin's intelligent search engine, or filter by Interface ICs category, or find it through Ricoh Americas Corporation Information page.
Q: Are the RICOH's RV5C348B price and stock displayed on the platform accurate?
The RICOH's inventory fluctuates greatly and cannot be updated in time, it will be updated periodically within 24 hours. After submitting an order for RV5C348B, it is recommended to confirm the order with Jotrin salesperson or online customer service before payment.
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Note: It may take up to 24 hours before carriers will display tracking information. In normal conditions, Express delivery needs 3-5 days, Registered Mail needs 25-60 days.
Q: What is the process for returns or replacement of RV5C348B?
All goods will implement Pre-Shipment Inspection (PSI), selected at random from all batches of your order to do a systematic inspection before arranging the shipment. If there is something wrong with the RV5C348B we delivered, we will accept the replacement or return of the RV5C348B only when all of the below conditions are fulfilled:
(1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.
(2)We are informed of the defect described above within 90 days after the delivery of RV5C348B.
(3)The RV5C348B is unused and only in the original unpacked packaging.
Two processes to return the products:
(1)Inform us within 90 days
(2)Obtain Requesting Return Authorizations
More details about return electronic components please see our Return & Change Policy.
Q: How to contact us and get support, such as RV5C348B datasheet pdf, RV5C348B pin diagram?
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Ricoh Americas Corporation

Ricoh microelectronics is a wholly-owned subsidiary of ricoh group, one of the world's top 500 companies. Ricoh microelectronics: ricoh products with high performance and high reliability are highly recognized by the market. Committed to a variety of highly integrated power management IC, lithium...
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