R2043T datasheet(5/48 Pages) RICOH

Part #	R2043T

Description	4-wire Serial Interface

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Manufacturer	RICOH [RICOH electronics devices division]

Direct Link	http://www.ricoh.com

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R2043K/T

12345

Rev.2.05

- 5 -

DC ELECTRICAL CHARACTERISTICS

R2043K/T

(Unless otherwise specified:

VSS=0V, VDD=3.0V, Topt=-40 to +85

°C, Crystal oscillator 32768Hz,CL=7pF,R1=50kΩ)

Symbol

Item

Pin Name

Conditions

Min.

Typ.

Max.

Unit

VIH

“H” Input Voltage

0.8x

VDD

5.5

VIL

“L” Input Voltage

CE,

SCLK, SI

VDD=1.7 to 5.5V

-0.3

0.2x

VDD

V

IOH

“H” Output

Current

SO

VOH=VDD-0.5V

-0.5

mA

IOL1

/INTR

2.0

IOL2

“L” Output

Current

SO,

32KOUT

VOL=0.4V

0.5

mA

IIL

Input Leakage

Current

SI, SCLK

VI=5.5V or VSS

VDD=5.5V

-1.0

1.0

µA

RDNCE

Pull-down Resistance

CE

40

120

400

k

Ω

IOZ1

SO

VO=5.5V or VSS

VDD=5.5V

-1

1

IOZ2

/INTR

VO=5.5V

VDD=5.5V

-1

1

µA

IOZ3

Output Off-state

Current

32KOUT

VO=5.5V

VDD=5.5V

-1

1

IDD

Time Keeping Current

VDD

VDD=3V,

CE= OPEN

Output = OPEN

32KOUT=OFF

CGout=CDout=0pF

*1)

0.45

1.00

µA

VDETH

Supply Voltage

Monitoring Voltage “H”

VDD

Topt=-30 to +70

°C

1.45

1.60

1.75

V

VDETL

Supply Voltage

Monitoring Voltage “L”

VDD

Topt=-30 to +70

°C

1.15

1.30

1.45

V

*1) For time keeping current when outputting 32.768kHz from the 32KOUT pin, see “P.43

Typical

Characteristics”.

For time keeping current when CGOUT, CDOUT is not equal to 0pF, see “P.28

Adjustment of Oscillation frequency”.

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