RV5C339A datasheet(14/51 Pages) RICOH | 3-WIRE SERIAL INTERFACE REAL-TIME CLOCK ICs WITH VOLTAGE MONITORING FUNCTION???

Part #	RV5C339A

Description	3-WIRE SERIAL INTERFACE REAL-TIME CLOCK ICs WITH VOLTAGE MONITORING FUNCTION???

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Manufacturer	RICOH [RICOH electronics devices division]

Direct Link	http://www.ricoh.com

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RV5C339A

2.1-5 CT2, CT1, and CT0

1) Pulse Mode : 2-Hz and 1-Hz clock pulses are output in synchronization with the increment of the second counter

as illustrated in the timing chart on the next page.

TEST

Description

0

Normal operation mode

1

Test mode

2.1-4 TEST

Test Bit

(Default setting)

The TEST bit is used only for testing in the factory and should normally be set to 0.

Periodic Interrupt Selection Bits

CT2

CT1

CT0

Description

Waveform mode

Interrupt cycle and falling timing

0

—

Off (“H”)

0

1

—

Fixed at low (“L”)

0

1

0

Pulse Mode

2Hz (Duty cycle of 50%)

0

1

Pulse Mode

1Hz (Duty cycle of 50%)

1

0

Level Mode

Once per 1 second (Synchronized with second counter increment)

1

0

1

Level Mode

Once per minute (at 00 seconds of every minute)

1

0

Level Mode

Once per hour (at 00 minutes and 00 seconds of every hour)

1

Level Mode

Once per month (at 00 hours, 00 minutes, and 00 seconds of first day of every month)

(Default setting)

2.1-3 CLEN2

32-kHz Clock Output Bit 2

CLEN2

Description

0

Enabling the 32-kHz clock circuit

1

Disabling the 32-kHz clock circuit

(Default setting)

Setting the CLEN2 bit or the CLEN1 bit (D3 in the control register 2) to 0, specifies generating clock pulses with

the oscillation frequency of the 32.768-kHz crystal oscillator for output from the 32KOUT pin. Conversely, setting

both the CLEN1 and the CLEN2 bit to 1 disabling (“H”) such output.

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RV5C339A Datasheet(PDF) 14 Page - RICOH electronics devices division

RV5C339A Datasheet(HTML) 14 Page - RICOH electronics devices division

Similar Part No. - RV5C339A

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