3/5

XC25BS6

Series

STANDARD VALUE

PARAMETER

SYMBOL

FUNCTIONS

MIN.

TYP.

MAX.

UNIT

Operating Supply Voltage

(2.3)

3.0

4.0

V

Crystal Oscillation Frequency

Cg=Cd=10pF (External)

2

-

36

MHz

H Level Output Voltage

2.3

-

-

V

L Level Output Voltage

-

-

0.4

V

fOSC=4MHz, XC25BS6128

-

(0.4)

(0.8)

fOSC=8MHz, XC25BS6256

-

(0.5)

(1.0)

fOSC=16MHz, XC25BS6512

-

(0.8)

(1.6)

Supply Current 1

CE=3.0V

fOSC=36MHz, XC25BS6A24

-

(1.0)

(1.8)

mA

Supply Current 2

CE=0V

-

-

0.5

μ

A

CE H Level Voltage

2.4

-

-

V

CE L Level Voltage

-

-

0.6

V

CE Pull-Down Resistance 1

Rp1

CE=3.0V

0.5

1.6

3.0

MΩ

CE Pull-Down Resistance 2

Rp2

CE=0.3V

22

55

90

KΩ

Internal Oscillation Feedback Resistance

Rf

XT Pin, CE=/XT=3.0V

0.2

0.5

1.0

MΩ

Output Disable Leakage Current

IOZ

-

-

0.5

μ

A

STANDARD VALUE

PARAMETER

SYMBOL

FUNCTIONS

MIN.

TYP.

MAX.

UNIT

Output Rise Time

Tr

-

10

15

ns

Output Fall Time

Tf

-

10

15

ns

Duty Cycle

DUTY

45

50

55

%

Output Start Time

Ton

*1

-

-

3.0

ms

■

NOTES ON USE

(1) The oscillation circuit of this IC does not have internal oscillation capacitors.

Please make the oscillation circuitry using an external crystal transducer and oscillation capacitors Cg and Cd.

*) A higher harmonic wave oscillation may occur without Cg and Cd.

(Cg and Cd in the above circuit example are connected to GND.)

*) It is recommended to use around for 10pF of Cg and Cd.

For trimmer capacitors, 10pF as a standard value is appropriate.

*) The crystal oscillation frequency should be measured at the output of the Q0 pin.

When a probe is directly connected to the XT pin or the /XT pin, oscillation frequency will change and a precise value can

not be taken.

(3) The use of a matching resistor Rq0 of 50Ω connected in series to the Q0 pin is recommended in order to counter

unwanted radiations.

(4) Please place a by-pass capacitor and the matching resistor as close to the IC as possible. If the by-pass capacitor is

placed away from the IC, it may cause abnormal oscillation. If the matching resistor is placed away from the IC, it may

cause unwanted radiations in the pattern between the Q0 pin and the resistor.

*) When the CE pin is not connected, the IC goes into stand-by mode due to the internal pull-down resistor.

(6) As for the supply voltage, it is recommended to apply a low noise power supply, such as a series regulator. Using a

power supply like a switching regulator might lead to an unstable oscillation jitter, which in turn may lead the oscillation

frequency to fluctuate due to the ripple of the switching regulator.

■

DC ELECTRICAL CHARACTERISTICS

XC25BS6xxxxx

■

AC ELECTRICAL CHARACTERISTICS

XC25BS6xxxxx

*External oscillation capacitor

*1 R&D guarantee