XC25BS6 Series

Divider Signal Output Clock Generator ICs with Built-In Crystal Oscillator Circuit

September 17, 2003 V1

Preliminary

CMOS

Low Power Consumption

APPLICATIONS

Low Operating Supply Voltage

2.3V (MIN.)

Crystal Oscillation Modules

Output Frequency

32.768kHz

Clocks for Micro-computers, DSPs, etc.

Oscillation Frequency

2MHz ~ 36MHz (fundamental)

Communication Equipment

Built-In Divider Circuit

Selectable from divisions of

Various System Clocks

1024, 512, 256, 128

Clock Time-Base

Output

3-State

Ultra Small Package

SOT-26

Chip Form

GENERAL DESCRIPTION

FEATURES

Oscillation Frequency

2MHz ~ 36MHz (fundamental)

- Oscillation feedback resistor built-in

- External oscillation capacitor

Divider Ratio

f0/1024, f0/ 512, f0/256, f0/128

Output

3-State

Operating Supply

2.3 ~ 4.0V

Voltage Range

Supply Current

0.5

µA (MAX.) when stand-by mode

Chip Form

Chip size 1.3 x 0.8mm

Package

SOT-26 mini mold

PIN CONFIGURATION

PIN ASSIGNMENT

* The stand-by control pin (pin #4) has a pull-down resistor built-in.

PAD LAYOUT FOR CHIP FORM

PAD LOCATIONS

(Unit:

µm)

* The stand-by control pin (pin #4) has a pull-down resistor built-in.

BLOCK DIAGRAM

CE, Q0 PIN FUNCTION

'L' or Open

High Impedance

Q0

Clock Output

5

399.0

CE

'H'

9

VDD

Power Supply

189.0

1172.0

430.0

4

VSS

Ground

952.0

3

(NC)

No Connection

741.0

PIN NUMBER

PIN

NAME

FUNCTIONS

1

/ XT

Crystal Oscillator

Connection (Output)

VSS

Ground

Q0

187.0

PAD DIMENSIONS

X

Y

672.0

672.0

672.0

128.0

610.0

328.0

672.0

1172.0

1172.0

CE

VDD

FUNCTIONS

Crystal Oscillator

Connection (Output)

Ground

Stand-by Control *

Power Supply

Clock Output

7

6

Power Supply

Crystal Oscillator

Connection (Input)

1

6XT

VSS

Q0

2

3

4

5

VDD

Clock Output

Stand-by Control *

2

CE

PIN

NAME

/ XT

PIN NUMBER

8

128.0

Crystal Oscillator

Connection (Input)

XT

128.0

Semiconductor Ltd.

The XC25BS6 is a low operating voltage, low current consumption

series of CMOS ICs with built-in crystal oscillator and divider circuits

designed for clock generators. Oscillation capacitors Cg and Cd are

externally set up.

Output is selectable from any one of the following values for f0:f0/1024,

f0/512, f0/256, and f0/128.

With oscillation feedback resistors built-in, it is possible to configure a

stable fundamental oscillator using about 10pF of external oscillation

capacitor and an external crystal.

The series has a stand-by function. The oscillation completely stops in

the stand-by state and output will be one of high-impedance.

6

5

4

3

2

1

/XT

VSS

Q0

XT

VDD

CE

VDD

Q0

CE

XT

/XT

VSS

VSS

(NC)

VDD

(1300,800)

(0,0)

Chip Size

Chip Thickness

Chip Back

Pad Aperture

: 1300 x 800

µm

: 280

±20µm

: VDD level

: 88 x 88

µm

Note)

There are two VSS

pads and two VDD

pads. Please connect

both VSS pads to

GND, and connect

both VDD pads to a

power supply.

Counter

VDD

/XT

XT

VSS

Q0

CE

Data Sheet

1