TOREX XC25BS6 User Manual

XC25BS6 Series

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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.) z
 Output Frequency 32.768kHz z Clocks for Micro-computers, DSPs, etc.
 Oscillation Frequency 2MHz ~ 36MHz (fundamental) z Communication Equipment
 Built-In Divider Circuit Selectable from divisions of z Various System Clocks

1024, 512, 256, 128 z Clock Time-Base
 Output 3-State
 Ultra Small Package SOT-26
 Chip Form

 GENERAL DESCRIPTION  FEATURES

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.

Crystal Oscillation Modules

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 0.5µA (MAX.) when stand-by mode
Chip Form Chip size 1.3 x 0.8mm
Package SOT-26 mini mold

 PIN CONFIGURATION  PIN ASSIGNMENT

PIN

NAME

FUNCTIONS

Crystal Oscillator

Connection (Output)

VSS Ground

Q0
CE

Clock Output

Stand-by Control *

Power Supply

Crystal Oscillator

Connection (Input)

VSS

Q0

PIN NUMBER

1/XT

XT

6

1 / XT
2

VDD

2

3

5

4

CE

3
4
5 VDD

6XT

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

 PAD LAYOUT FOR CHIP FORM  PAD LOCATIONS (Unit:µm)

(0,0)

VSS

/XT

VDD

XT

Chip Size
Chip Thickness
Chip Back
Pad Aperture

(NC)

VSS

: 1300 x 800µm
: 280±20µm
: VDD level
: 88 x 88 µm

Q0

VDD

CE

(1300,800)

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.

PIN NUMBER

1
2

PIN

NAME

/ XT

VSS

FUNCTIONS

Crystal Oscillator

Connection

Output

Ground
3 (NC) No Connection 741.0
4 VSS Ground 952.0
5
6

Q0

VDD

7
8

XT 128.0

Clock Output

Power Suppl

Stand-by Control *

Crystal Oscillator

Connection (Input)

9 VDD Power Suppl

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

PAD DIMENSIONS

Y

128.0 610.0

328.0 672.0

672.0

672.0

1172.0

672.0

1172.0 430.0

1172.0CE

189.0

187.0

128.0

399.0

 BLOCK DIAGRAM  CE, Q0 PIN FUNCTION

VDD

/XT

Counter

XT

Q0

CE

VSS

Data Sheet 1

CE

'H'

'L' or Open High Impedance

Q0

Clock Output

Semi conductor Ltd.

XC25BS6 Series

K

K

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

Preliminary

 ABSOLUTE MAXIMUM RATINGS

Ta=25OC

SYMBOL RATINGS UNITSPARAMETER

VDD VSS -0.3 ~ VSS +7.0 VSupply Voltage
CE Pin Voltage
Q0 Pin Voltage

Operating Temperature Range

** SOT-26 package, When implemented on a glass epoxy PCB.

 PRODUCT CLASSIFICATION

 Ordering Information

XC25BS6

12345

123

Divider Ratio: Package:

128 = 128 divider C : Chip Form
256 = 256 divider W : Wafer Form
512 = 512 divider M : SOT-26
A24 = 1024 divider Device Orientation:

VCE VSS -0.3 ~ VDD +0.3

VQ0 VSS -0.3 ~ VDD +0.3

IQ0

Pd 150 ** mWContinuous Power Dissipation

Topr - 40 ~ + 85

- 65 ~ + 150 (Chip Form)

- 55 ~ + 125 (SOT-26)

DESCRIPTIONDESIGNATOR DESIGNATOR

± 50

4

5

V
V

mAQ0 Output Current

O

C

O

CTstgStorage Temperature Range

DESCRIPTION

R : Embossed Tape : Standard Feed
L : Embossed Tape : Reverse Feed
T : Chip Tray
W : Wafer

 MARKING RULE

654

1 2 3 4

3

21

 PACKAGING INFORMATION

 SOT-26

1 Represents XC25BS6 Series

MAR

Product Name

B XC25BS6

2 Represents XC25BS6 Series

MAR

Product Name

6 XC25BS6

3 Represents divider ratio

MARK

1
5

Divider Ratio

f0/128
f0/512

4 Represents the assembly lot no.

(Based on internal standards)

MARK Divider Ratio

2 f0/256
A f0/1024

Semi conductor Ltd.

Data Sheet 2