RV5C338A-E2 Просмотр технического описания (PDF) - RICOH Co.,Ltd.

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RV5C338A-E2

3-WIRE SERIAL INTERFACE REAL-TIME CLOCK ICS WITH VOLTAGE MONITORING FUNCTION

RICOH Co.,Ltd. 

7. Typical Characteristics

• Test Circuit

R× 5C338A

VDD

OSCIN

32.768kHz

OSCOUT

32KOUT

VSS

Frequency

counter

R×5C338A

X'tal : 32.768kHz

(R1=30kΩ TYP.)

(CL=6pF to 8pF)

Topt : 25˚C

Output pins : Open

7.1 Timekeeping Current vs. Supply Voltage

(with no 32-kHz clock output)

(CE=Open, Output=Open, Topt=25˚C)

1

0.8

0.6

0.4

0.2

0

0

1

2

34

5

6

Supply Voltage VDD(V)

7.2 Timekeeping Current vs. Supply Voltage

(with 32-kHz clock output)

(CE=Open, Output=Open, Topt=25˚C)

3

2.5

2

1.5

1

0.5

0

01

23

4

5

6

Supply Voltage VDD(V)

7.3 CPU Access Current vs. SCLK Clock Frequency

(Output=Open, Topt=25˚C)

50

7.4 Timekeeping Current vs. Operating Temperature

(with no 32-kHz clock output)

(CE=Open, Output=Open, Topt=25˚C)

2

40

1.5

30

VDD=5V

1

20

VDD=3V

0.5

10

0

0

500

1000 1500 2000

SCLK Clock Frequency (kHz)

0

–60 –40 –20 0 20 40 60 80 60

Operating Temperature Topt(˚C)

41

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