ULTRA-COMPACT REAL-TIME CLOCK IC
[Information] Not recomended for new designs, See R2033K/T or R2061S/Kxx
The RS5C313 is a CMOS type real-time clock which is connected to the CPU via three
signal lines and capable of serial transmission of clock and calendar data to the CPU.
The RS5C313 can generate various interrupt clock pulses lasting for long periods (one month). Driving an
oscillation circuit at constant voltage, the circuit undergoes few voltage fluctuations and consequently
realizes low current consumption (TYP. 0.7µA at 3 V). It also provides an oscillator halt sensing function
for application to data validity at power-on and other occasions. Integrated into an ultra-compact and ultra-thin 8pin
SSOP (0.65mm pitch), the RS5C313 is the optimum choice for equipment requiring
small size and low power consumption. There is RS5C314 reversing the logic of serial clock for series goods. |
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 Time
Keeping Supply Voltage |
1.6 to 6.0 V |
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| Operating
Supply Voltage |
2.7 to 6.0 V |
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| Low
Current Consumption |
TYP. 0.7µA (MAX. of 1.5µA) at 3V |
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Connection
to the CPU via only three pins: CE, SCLK, and SIO (for addressing and data read and write operations) |
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A
clock counter (counting hours, minutes, and seconds) and a calendar counter (counting leap years, years, months,
days, and days of the week) in binary-coded decimal (BCD) code |
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Generation
of interrupt pulses to the CPU with cycles ranging from 1 month to 1/1024 Hz, interrupt flags, and interrupt
halt |
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Software-based
alarming through clock-interlocked interrupt operation |
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| Oscillator
halt sensing to judge internal data validity |
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| Second
digit adjustment by ±30 seconds |
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| 12-hour
or 24-hour time display selectable |
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| Automatic
leap year recognition up to the year 2099 |
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| CMOS
logic |
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| Package |
8pin
SSOP (0.65mm pitch) |
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Communication equipment (Multi-function telephone, portable telephone,
PHS, Pager)
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Office automation (Facsimile, portable facsimile)
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Personal computer (Desk top type, notebook type, word proccesor,
PDA, electronic notebook, TV games)
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Audio visual equipment (Portable audio equipment, video camera,
camera, digital camera, remote control equipment)
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Home use (Rice cooker, microwave range) |
Data Sheet
(PDF) |
Package Info.
(PDF) |
Mark Info.
(PDF) |
Quality Assurance Data
(PDF) |
 RS5C313
EA-034-0208 (260KB) |
SSOP-8 |
to be prepared |
Reliability |
to be prepared |
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| * All PDF files are less than 1MB unless otherwise stated. |
| * If you don't have Adobe Reader, you can download free. |
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Product Catalog
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| Selection guide is available for download in PDF format. |
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