XC25BS6 Series
Divider Signal Output Clock Generator ICs with Built-In Crystal Oscillator Circuit
Preliminary
CMOS
Low Operating Supply Voltage
Output Frequency
Oscillation Frequency
Built-In Divider Circuit
Output
Ultra Small Package
Chip Form
GENERAL DESCRIPTION
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.
September 17, 2003 V1
Low Power Consumption
2.3V (MIN.)
32.768kHz
2MHz ~ 36MHz (fundamental)
Selectable from divisions of
1024, 512, 256, 128
3-State
SOT-26
APPLICATIONS
Crystal Oscillation Modules
Clocks for Micro-computers, DSPs, etc.
Communication Equipment
Various System Clocks
Clock Time-Base
FEATURES
Oscillation Frequency
2MHz ~ 36MHz (fundamental)
- Oscillation feedback resistor built-in
- External oscillation capacitor
Divider Ratio
Output
Operating Supply
Voltage Range
Supply Current
Chip Form
Package
0.5碌A (MAX.) when stand-by mode
Chip size 1.3 x 0.8mm
SOT-26 mini mold
f0/1024, f0/ 512, f0/256, f0/128
3-State
2.3 ~ 4.0V
PIN CONFIGURATION
PIN ASSIGNMENT
PIN NUMBER
PIN
NAME
/ XT
VSS
Q0
CE
VDD
XT
FUNCTIONS
Crystal Oscillator
Connection (Output)
Ground
Clock Output
Stand-by Control *
Power Supply
Crystal Oscillator
Connection (Input)
/XT 1
VSS 2
Q0 3
6 XT
5 VDD
4 CE
1
2
3
4
5
6
* The stand-by control pin (pin #4) has a pull-down resistor built-in.
PAD LAYOUT FOR CHIP FORM
(1300,800)
VSS
/XT
(NC)
Q0
PAD LOCATIONS
PIN NUMBER
(Unit:碌m)
FUNCTIONS
Crystal Oscillator
Connection (Output)
Ground
No Connection
Ground
Clock Output
Power Supply
Stand-by Control *
Crystal Oscillator
Connection (Input)
Power Supply
PAD DIMENSIONS
PIN
NAME
/ XT
VSS
(NC)
VSS
Q0
VDD
CE
XT
VDD
X
128.0
328.0
741.0
952.0
1172.0
1172.0
1172.0
128.0
128.0
Y
610.0
672.0
672.0
672.0
672.0
430.0
189.0
187.0
399.0
VSS
1
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.
2
3
4
5
6
7
8
9
VDD
XT
(0,0)
VDD
CE
Chip Size
: 1300 x 800碌m
Chip Thickness : 280鹵20碌m
Chip Back
: VDD level
Pad Aperture : 88 x 88
碌m
* The stand-by control pin (pin #4) has a pull-down resistor built-in.
BLOCK DIAGRAM
VDD
/XT
CE, Q0 PIN FUNCTION
CE
'H'
Counter
Q0
CE
Q0
Clock Output
High Impedance
'L' or Open
XT
VSS
Semiconductor Ltd.
Data Sheet
1
1
2
3
4
