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| XC25BS6 Series GENERAL DESCRIPTION ETR1503_001 Divider Signal Output Clock Generator ICs with Built-In Crystal Oscillator Circuit 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. 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 : f0/1024, f0/512, f0/256, f0/128 Output : 3-State Operating Supply Voltage Range : 2.3~4.0V Supply Current : 0.5A (MAX.) when stand-by mode Chip Form : Chip size 1.3x0.8mm CMOS Low Power Consumption Low Operating Supply Voltage : 2.3V (MIN.) Output Frequency : 32.768kHz Package : SOT-26 PIN CONFIGURATION PIN ASSIGNMENT PIN NUMBER 1 PIN NAME /XT FUNCTIONS Crystal Oscillator Connection (Output) 2 VSS Ground 3 Q0 Clock Output 4 CE Stand-by Control * 5 VDD Power Supply Crystal Oscillator 6 XT Connection (Input) *The stand-by control pin (pin #4) has a pull-down resistor built-in. SOT-26 (TOP VIEW) PAD LAYOUT FOR CHIP FORM (1300,800) VSS (NC) VSS Q0 /XT VDD XT (0,0) PAD LOCATIONS PIN NUMBER 1 2 3 4 5 6 7 8 9 PIN NAME /XT VSS (NC) VSS Q0 VDD CE XT VDD FUNCTIONS Crystal Oscillator Connection (Output) Ground No Connection Ground Clock Output Power Supply Stand-by Control * Crystal Oscillator Connection (Input) Power Supply (Unit:m) PAD DIMENSIONS X Y 128.0 328.0 741.0 952.0 1172.0 1172.0 1172.0 128.0 128.0 610.0 672.0 672.0 672.0 672.0 430.0 189.0 187.0 399.0 VDD CE Chip Size Chip Thickness Chip Back Pad Aperture :1300x800m :28020m :VDD level :88x88m 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. BLOCK DIAGRAM VDD /XT *The stand-by control pin (pin #4) has a pull-down resistor built-in. Counter Q0 CE CE, Q0 PIN FUNCTION CE `H' `L' or Open Q0 Clock Output High Impedance XT VSS 1/5 XC25BS6 Series ABSOLUTE MAXIMUM RATINGS PARAMETER Supply Voltage CE Pin Voltage Q0 Pin Voltage Q0 Output Current Power Dissipation Operating Temperature Range Storage Temperature Range SYMBOL VDD VCE VQ0 IQ0 Pd Topr Tstg RATINGS VSS -0.3 ~ VSS +7.0 VSS -0.3 ~ VDD +0.3 VSS -0.3 ~ VDD +0.3 50 150 ** -40 ~ +85 -65 ~ +150 (Chip Form) -55 ~ +125 (SOT-26) Ta = 25 UNITS V V V mA mW ** SOT-26 package, when implemented on a glass epoxy PCB. PRODUCT CLASSIFICATION Ordering Information XC25BS6 DESIGNATOR DESCRIPTION Divider Ratio SYMBOL 128 256 512 A24 C W M R L T W DESCRIPTION : 128 divider : 256 divider : 512 divider : 1024 divider : Chip form : Wafer form : SOT-26 : Embossed tape, standard feed : Embossed tape, reverse feed : Chip Tray : Wafer Package Device Orientation: WIRE BONDING CONNECTION * There are two VSS pads and VDD pads. Please connect both VSS pads to GND, and connect both VDD pads to a power supply. TYPICAL APPLICATION CIRCUIT * Please use oscillation capacitors Cg, Cd =10pF externally * The same power supply can be used for VDD and CE. 2/5 XC25BS6 Series 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 can be connected either to GND or VDD. (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. (2) Please insert a by-pass capacitor of 0.1F between VDD and GND. (3) The use of a matching resistor Rq0 of 50 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. (5) When the CE pin is not controlled by external signals, please connect the CE pin to VDD power supply. *) 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 PARAMETER Operating Supply Voltage Crystal Oscillation Frequency H Level Output Voltage L Level Output Voltage Supply Current 1 Supply Current 2 CE H Level Voltage CE L Level Voltage CE Pull-Down Resistance 1 CE Pull-Down Resistance 2 Internal Oscillation Feedback Resistance Output Disable Leakage Current SYMBOL VDD FOSC VOH VOL IDD1 IDD2 VCEH VCEL Rp1 Rp2 Rf IOZ 3.0V Operation (unless otherwise stated, VDD=3.0V, FOSC=16MHz, No load, Ta=25) FUNCTIONS Cg=Cd=10pF (External) VDD=2.7V, IOH= - 4mA VDD=2.7V, IOL=4mA fOSC=4MHz, XC25BS6128 fOSC=8MHz, XC25BS6256 CE=3.0V fOSC=16MHz, XC25BS6512 fOSC=36MHz, XC25BS6A24 CE=0V STANDARD VALUE MIN. TYP. MAX. (2.3) 3.0 4.0 2 36 2.3 0.4 (0.4) (0.8) (0.5) (1.0) (0.8) (1.6) (1.0) (1.8) 0.5 2.4 0.6 0.5 1.6 3.0 22 55 90 0.2 0.5 1.0 0.5 UNIT V MHz V V mA CE=3.0V CE=0.3V XT Pin, CE=/XT=3.0V Q0 Pin, VDD=4.0V, CE=0V A V V M K M A *External oscillation capacitor AC ELECTRICAL CHARACTERISTICS XC25BS6xxxxx PARAMETER Output Rise Time Output Fall Time Duty Cycle Output Start Time SYMBOL Tr Tf DUTY Ton *1 3.0V Operation (unless otherwise stated, VDD=3.0V, FOSC=16MHz, CL=15pF, Ta=25) FUNCTIONS VDD=3.0V (10% to 90%) *1 VDD=3.0V (10% to 90%) *1 STANDARD VALUE MIN. 45 TYP. 10 10 50 MAX. 15 15 55 3.0 UNIT ns ns % ms *1 R&D guarantee 3/5 XC25BS6 Series AC ELECTRICAL CHARACTERISTICS MEASUREMENT WAVE FORMS (1) Output Rise Time, Output Fall Time 0.9VDD 0.9VDD 0.1VDD 0.1VDD tr tf (2) Duty Cycle DUTY Measurement Level 0.5VDD TW T DUTY = (TW/T) x 100 [%] PACKAGING INFORMATION SOT-26 MARKING RULE Represents product series SOT-26 6 MARK B 5 4 PRODUCT SERIES XC25BS6 Represents product series MARK 6 PRODUCT SERIES XC25BS6 1 2 3 Represents divider ratio MARK 1 5 DIVIDER RATIO f0/128 f0/512 MARK 2 A DIVIDER RATIO f0/256 f0/1024 SOT-26 (TOP VIEW) Represents assembly lot number. (Based on internal standards) 4/5 XC25BS6 Series 1. The products and product specifications contained herein are subject to change without notice to improve performance characteristics. Consult us, or our representatives before use, to confirm that the information in this catalog is up to date. 2. We assume no responsibility for any infringement of patents, patent rights, or other rights arising from the use of any information and circuitry in this catalog. 3. Please ensure suitable shipping controls (including fail-safe designs and aging protection) are in force for equipment employing products listed in this catalog. 4. The products in this catalog are not developed, designed, or approved for use with such equipment whose failure of malfunction can be reasonably expected to directly endanger the life of, or cause significant injury to, the user. (e.g. Atomic energy; aerospace; transport; combustion and associated safety equipment thereof.) 5. Please use the products listed in this catalog within the specified ranges. Should you wish to use the products under conditions exceeding the specifications, please consult us or our representatives. 6. We assume no responsibility for damage or loss due to abnormal use. 7. All rights reserved. No part of this catalog may be copied or reproduced without the prior permission of Torex Semiconductor Ltd. 5/5 |
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