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RS5C338A-E2

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

RICOH Co.,Ltd. 

R×5C338A

DC ELECTRICAL CHARACTERISTICS

Unless otherwise specified : Vss=0V,VDD=3V,Topt=–40 to +85˚C

Symbol

Item

Pin name

Conditions

MIN. TYP. MAX. Unit

VIH1

“H” Input Voltage

SCLK,CE,CLKC

0.8VDD

5.5

VIH2

“H” Input Voltage

SIO

VDD=2.5 to 5.5V

0.8VDD

VDD+0.3 V

VIL

“L” Input Voltage

SCLK,CE,SIO,CLKC

–0.3

0.2VDD

IOH

“H” Output Current SIO,32KOUT

VOH=VDD–0.5V

–0.5 mA

IOL1

INTR

VOL=0.4V

2

”L” Output Current

mA

IOL2

SIO,32KOUT

VOL=0.4V

0.5

IIL

Input Leakage Current SCLK

RDNCE

ICLKC

Pull-down Resistance CE

Pull-down Resistance

CLKC

Input Current

VI=5.5V or Vss

VDD=5.5V

–1

1

µA

40

120 400

kΩ

0.35 1.0

µA

IOZ1

Output Off-state

Leakage Current

IOZ2

SIO

INTR

Vo=5.5V or Vss

–1

VDD=5.5V

VO=5.5V

–1

1

µA

1

IDD1 Standby Current

VDD

VDD=3V,CE=OPEN

Output=OPEN

32KOUT=Off mode*1

0.35 0.8

µA

VDETH

Supply Voltage Monitoring

VDD

Voltage (“H”)

Topt=–30 to +70˚C

1.90 2.10 2.30

V

VDETL

Supply Voltage Monitoring

VDD

Voltage (“L”)

Topt=–30 to +70˚C

1.45 1.60 1.80

V

CG

Internal Oscillation Capacitance 1 OSCIN

CD

Internal Oscillation Capacitance 2 OSCOUT

12

pF

12

*1) For standby current for outputting 32.768-kHz clock pulses from the 32KOUT pin, see “USAGES, 7. Typical Characteristics”.

5

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