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CY25200
Programmable Spread Spectrum Clock Generator for EMI Reduction
Features
Benefits

Wide operating output (SSCLK) frequency range 3-200 MHz Programmable spread spectrum with nominal 31.5 kHz modulation frequency Center spread: 0.25% to 2.5% Down spread: -0.5% to -5.0% Input frequency range External crystal: 8-30 MHz fundamental crystals External reference: 8-166 MHz clock Integrated phase-locked loop (PLL) Programmable crystal load capacitor tuning array Low cycle-to-cycle jitter 3.3V operation with 2.5V output clock drive option Spread spectrum On and Off function Power down or Output Enable function Output frequency select option Field-programmable Package: 16 pin TSSOP
Suitable for most PC peripherals, networking, and consumer applications. Provides wide range of spread percentages for maximum EMI reduction to meet regulatory agency Electro Magnetic Compliance (EMC) requirements. Reduces development and manufacturing costs and time to market. Eliminates the need for expensive and difficult to use higher order crystals. Internal PLL generates up to 200 MHz outputs; also generates custom frequencies from an external crystal or a driven source. Enables fine tuning of output clock frequency by adjusting CLoad of the crystal. Eliminates the need for external CLoad capacitors. Application compatibility in standard and low power systems. Provides ability to enable or disable spread spectrum with an external pin. Enables low power state or output clocks to High-Z state. Enables quick generation of sample prototype quantities.

Logic Block Diagram
7
Divider Bank 1 Output Select Matrix VCO SSCLK1
8 SSCLK2 9
SSCLK3
XIN/CLKIN 1 XOUT 16 CXOUT
OSC.
Q
12 SSCLK4
CXIN
P
PLL
Divider Bank 2
14 SSCLK5/REFOUT/CP2 15 SSCLK6/REFOUT/CP3
2
VDD
3
AVDD
5
AVSS
13
VSS
11
VDDL
6
VSSL
4
CP0
10
CP1
Cypress Semiconductor Corporation Document #: 38-07633 Rev. *D
*
198 Champion Court
*
San Jose, CA 95134-1709 * 408-943-2600 Revised December 11, 2007
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CY25200
Pin Configuration
Figure 1. Pin Diagram
General Description
The CY25200 is a Spread Spectrum Clock Generator (SSCG) IC used to reduce Electro Magnetic Interference (EMI) found in today's high speed digital electronic systems. The device uses a Cypress proprietary Phase-Locked Loop (PLL) and Spread Spectrum Clock (SSC) technology to synthesize and modulate the frequency of the input clock. By frequency modulating the clock, the measured EMI at the fundamental and harmonic frequencies are greatly reduced. This reduction in radiated energy significantly reduces the cost of complying with regulatory agency requirements (EMC) and improves time to market, without degrading system performance. The CY25200 uses a factory and field-programmable configuration memory array to synthesize output frequency, spread %, crystal load capacitor, clock control pins, PD#, and OE options. Table 1. Pin Summary Name XIN XOUT VDD AVDD VSS AVSS VDDL VSSL SSCLK1 SSCLK2 SSCLK3 SSCLK4 SSCLK5/REFOUT/CP2 SSCLK6/REFOUT/CP3 CP0[1] CP1[1] Pin Number 1 16 2 3 13 5 11 6 7 8 9 12 14 15 4 10
The spread % is factory and field-programmed to either center spread or down spread with various spread percentages. The range for center spread is from 0.25% to 2.50%. The range for down spread is from -0.5% to -5.0%. Contact the factory for smaller or larger spread % amounts, if required. The input to the CY25200 is either a crystal or a clock signal. The input frequency range for crystals is 8-30 MHz and for clock signals is 8-166 MHz. The CY25200 has six clock outputs, SSCLK1 to SSCLK6. The frequency modulated SSCLK outputs are programmed from 3-200 MHz. The CY25200 products are available in a 16-pin TSSOP package with a commercial operating temperature range of 0 to 70C.
Description Crystal Input or Reference Clock Input Crystal Output. Leave this pin floating if external clock is used 3.3V power supply for digital logic and SSCLK5 and 6 clock drives 3.3V analog-PLL power supply Ground Analog ground 2.5V or 3.3V power supply for SSCLK1/2/3/4 clock drives VDDL power supply ground Programmable spread spectrum clock output at VDDL level (2.5V or 3.3V) Programmable spread spectrum clock output at VDDL level (2.5V or 3.3V) Programmable spread spectrum clock output at VDDL level (2.5V or 3.3V) Programmable spread spectrum clock output at VDDL level (2.5V or 3.3V) Programmable spread spectrum clock or buffered reference output at VDD level (3.3V) or control pin, CP2 Programmable spread spectrum clock or buffered reference output at VDD level (3.3V) or control pin, CP3 Control pin 0 Control pin 1
Note 1. Pins are programmed to be any of the following control signals: OE: Output Enable, OE = 1, all the SSCLK outputs are enabled; PD#: Power down, PD# = 0, all the SSCLK outputs are three-stated and the part enters a low power state; SSON: Spread Spectrum Control (SSON = 0, No Spread and SSON = 1, Spread Signal), CLKSEL: SSCLK Output Frequency Select. Please see Control Pins (CP0, CP1, CP2 and CP3) for control pins programming options.
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CY25200
Table 2. Fixed Function Pins Pin Function Pin Name Pin# Units Program Value CLKSEL = 0 Program Value CLKSEL = 1 Output Clock Functions and Frequency SSCLK1 7 MHz ENTER DATA ENTER DATA SSCLK2 8 MHz ENTER DATA ENTER DATA SSCLK3 9 MHz ENTER DATA ENTER DATA SSCLK4 12 MHz ENTER DATA ENTER DATA ENTER DATA ENTER DATA ENTER DATA 31.5 Input Frequency XIN and XOUT 1 and 16 MHz CXIN and CXOUT XIN and XOUT 1 and 16 pF Spread Percent SSCLK[1:6] Frequency Modulation SSCLK[1:6]
7,8,9,12,14,15 7,8,9,12,14,15 % kHz
Table 3. Multi-Function Pins Pin Function Pin Name Pin# Units Program Value CLKSEL = 0 Program Value CLKSEL = 1 Output Clock/REFOUT/OE/SSON/CLKSEL SSCLK5/REFOUT/CP2 14 MHz ENTER DATA ENTER DATA SSCLK6/REFOUT/CP3 15 MHz ENTER DATA ENTER DATA ENTER DATA ENTER DATA OE/PD#/SSON/CLKSEL CP0 4 N/A CP1 10 N/A
Programming Description
Field-Programmable CY25200
The CY25200 is programmed at the package level, that is, in a programmer socket. The CY25200 is Flash technology based, so the parts are reprogrammed up to 100 times. This allows for fast and easy design changes and product updates, and eliminates any issues with old and out of date inventory. Samples and small prototype quantities are programmed on the CY3672 programmer with the CY3695 socket adapter.
and make sure to check the "non-standard devices" box. For more information on the registration process refer to the CY3672 data sheet. For information regarding Spread Spectrum software programming solutions, please contact your local Cypress Sales or Field Application Engineer (FAE), representative for details.
Factory-Programmable CY25200
Factory programming is available for volume manufacturing by Cypress. All requests must be submitted to the local Cypress Field Application Engineer (FAE) or sales representative. The sample request form provided by the representative must be completed. When the request is processed, you receive a new part number, samples, and data sheet with the programmed values. This part number is used for additional sample requests and production orders. Additional information on the CY25200 are available on the Cypress website at www.cypress.com.
CyberClocksTM Online Software
CyberClocksTM Online Software is a web based software application that allows the user to custom configure the CY25200. All the parameters in given as "Enter Data" are programmed into the CY25200. CyberClocks Online outputs an industry standard JEDEC file used for programming the CY25200. CyberClocks Online is available at www.cyberclocksonline.com website through user registration. To register, fill out the registration form
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CY25200
Product Functions
Control Pins (CP0, CP1, CP2 and CP3)
There are four control signals available through programming of pins 4, 10, 14, and 15. CP0 (pin 4) and CP1 (pin10) are specifically designed to function as control pins. However pins 14 (SSCLK5/REFOUT/CP2) and 15 (SSCLK6/REFOUT/CP3) are multi-functional and are programmed to be a control signal or an output clock (SSCLK or REFOUT). All of the control pins, CP0, CP1, CP2, and CP3 are programmable and are programmed to have only one of the following functions:

shows an example of how this is implemented. The VCO frequency range is 100-400MHz. The CY25200 has two separate dividers, Divider 1 and Divider 2. These two are loaded to have any number between 2 and 130 providing two different but related frequencies as explained above. In the above example SSCLK5 (pin 14) and SSCLK6 (pin 15) are used as output clocks. However, they can also be used as control signals. See Figure 3 for the pinout.
Input Frequency (XIN, pin 1 and XOUT, pin 16)
The input to the CY25200 is a crystal or a clock. The input frequency range for crystals is 8 to 30 MHz, and for clock signal is 8 to 166 MHz.
Output Enable (OE)--if OE = 1, all the SSCLK or REFOUT outputs are enabled. SSON, Spread spectrum control--1 = spread on and 0 = spread off. CLKSEL--SSCLK output frequency select PD#, Active Low--if PD# = 0, all the outputs are three-stated and the part enters a low power state.
CXIN and CXOUT (pin 1 and pin 16)
The load capacitors at pin 1 (CXIN) and pin 16 (CXOUT) are programmed from 12 pF to 60 pF with 0.5 pF increments. The programmed value of these on-chip crystal load capacitors are the same (XIN = XOUT = 12 to 60 pF). The required values of CXIN and CXOUT for matching crystal load (CL) is calculated using the following formula: CXIN = CXOUT = 2CL - CP Where CL is the crystal load capacitor as specified by the crystal manufacturer and CP is the parasitic PCB capacitance. For example, if a fundamental 16 MHz crystal with CL of 16 pF is used and CP is 2 pF, CXIN and CXOUT is calculated as: CXIN = CXOUT = (2 x 16) - 2 = 30 pF. If using a driven reference clock, set CXIN and CXOUT to the minimum value 12 pF.
The last control signal is the power down (PD#) that is implemented only through programming CP0 or CP1 (CP2 and CP3 cannot be programmed as PD#). Here is an example with three control pins:

CLKIN = 33 MHz SSCLK1/2/3/4 = 100 MHz with 1% spread SSCLK 5 = REFOUT(33 MHz) CP0 (Pin 4) = PD# CP1 (Pin 10) = OE CP3 (pin 15) = SSON Figure 2. Pin Diagram
33.0MHz VDD AVDD PD# AVSS VSSL 100MHz 100MHz 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 NC
SSON REFOUT(33.0MHz)
Output Frequency (SSCLK1 through SSCLK6 Outputs)
All of the SSCLK outputs are produced by synthesizing the input reference frequency using a PLL and modulating the VCO frequency. SSCLK[1:4] is programmed to be only output clocks (SSCLK). SSCLK5 and SSCLK6 are also programmed to function the same as SSCLK[1:4] or a buffered copy of the input reference (REFOUT) or they are programmed to be a control pin as discussed in the control pins section. To use the 2.5V output drive option on SSCLK[1:4], VDDL must be connected to a 2.5V power supply (SSCLK[1:4] outputs are powered by VDDL). When using the 2.5V output drive option, the maximum output frequency on SSCLK[1:4] is 166 MHz.
The pinout for the above example is shown in Figure 2.
VSS 100MHz VDDL OE 100MHz
Spread Percentage (SSCLK1 through SSCLK6 Outputs)
The SSCLK frequency is programmed at any percentage value from 0.25% to 2.5% for center spread and from -0.5% to -5.0% down spread.
The CLKSEL control pin enables the user to change the output frequency from one frequency to another (for example, frequency A to frequency B). These must be related frequencies that are derived off of a common VCO frequency. For instance, 33.333 MHz and 66.666 MHz are both derived from a VCO of 400 MHz and dividing it down by 12 and 6 respectively. Table 4
Frequency Modulation
The frequency modulation is programmed at 31.5 kHz for all SSCLK frequencies from 3 to 200 MHz. Contact the factory if a higher modulation frequency is required.
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CY25200
Table 4. Using Clock Select, CLKSEL Control Pin Input Frequency (MHz) 14.318 CLKSEL (Pin 4) CLKSEL = 0 CLKSEL = 1 SSCLK1 (Pin 7) 33.33 66.66 SSCLK2 (Pin 8) 33.33 66.66 SSCLK3 (Pin 9) 33.33 66.66 SSCLK4 (Pin 12) 33.33 66.66 REFOUT (Pin 14) 14.318 14.318 REFOUT (Pin 15) 14.318 14.318
Figure 3. Using Clock Select, CLKSEL Control Pin Configuration Pinout
14.318MHz VDD AVDD CLKSEL AVSS VSSL 33.33/66.66MHz 33.33/66.66MHz 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 XOUT
REFOUT(14.318MHz) REFOUT(14.318MHz)
VSS 33.33/66.66MHz VDDL SSON 33.33/66.66MHz
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CY25200
Switching Waveforms
Figure 4. Duty Cycle Timing (DC = t1A/t1B)
Figure 5. Output Rise and Fall Time (SSCLK and REFCLK)
VDD OUTPUT 0V
Tr Tf Output Rise time (Tr) = (0.6 x VDD)/SR1 (or SR3) Output Fall time (Tf) = (0.6 x VDD)/SR2 (or SR4) Refer to AC Electrical Characteristics table for SR (Slew Rate) values.
Figure 6. Power Down and Power Up Timing
VDD 0V VIL
POWER DOWN
VIH tPU
SSCLK
(Asynchronous)
High Impedance
tSTP
Figure 7. Output Enable and Disable Timing
OUTPUT ENABLE VDD 0V VIL VIH
TOE2
SSCLK
(Asynchronous
High Impedance
)
TOE1
a
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CY25200
Informational Graphs
The informational graphs are meant to convey the typical performance levels. No performance specifications is implied or guaranteed. Refer to the tables on 3 and 5 for device specifications.
172.5 171.5 170.5 169.5 168.5 167.5 166.5 165.5 164.5 163.5 162.5 161.5 160.5 159.5
0 20 40 60 80 100 120 Time (us) 140 160 180 200
68.5
Spread Spectrum Profile: Fnom=166MHz, Fmod=30kHz, Spread%= -4%
68 67.5 67 66.5 66
Spread Spectrum Profile: Fnom=66MHz, Fmod=30kHz, Spread%= -4%
Fnominal
Fnominal
65.5 65 64.5 64 63.5
0 20 40 60 80 100 120 Time (us) 140 160 180 200
169.5 169 168.5 168 167.5 167 166.5 166 165.5 165 164.5 164 163.5 163 162.5
0 20
Spread Spectrum Profile: Fnom=166MHz, Fmod=30kHz, Spread%= +/-1%
67.5 67 66.5 66
Fnominal
Spread Spectrum Profile: Fnom=66MHz, Fmod=30kHz, Spread%= +/-1%
Fnominal
65.5 65 64.5
0
40 60 80 100 120 Time (us) 140 160 180 200
20
40
60
80
100 120 Time (us)
140
160
180
200
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CY25200
Absolute Maximum Rating
Supply Voltage (VDD) .......................................-0.5 to +7.0V DC Input Voltage...................................... -0.5V to VDD + 0.5 Storage Temperature (non-condensing) ..... -55C to +125C Junction Temperature ................................ -40C to +125C Data Retention at Tj = 125C ................................> 10 years Package Power Dissipation...................................... 350 mW Static Discharge Voltage.......................................... > 2000V (per MIL-STD-883, Method 3015)
Recommended Crystal Specifications
Parameter FNOM CLNOM R1 R3/R1 DL Description Nominal Crystal Frequency Nominal Load Capacitance Equivalent Series Resistance (ESR) Internal load caps Fundamental mode 3 0.5 2 mW Comments Parallel resonance, fundamental mode, AT cut Min Typ. Max Unit 8 6 30 30 25 MHz pF
Ratio of Third Overtone Mode ESR to Ratio used because typical R1 values are much Fundamental Mode ESR less than the maximum specification Crystal Drive Level No external series resistor assumed
Recommended Operating Conditions
Parameter VDD VDDLHI VDDLLO TAC CLOAD CLOAD FSSCLK-HighVoltage FSSCLK-LowVoltage REFOUT fREF1 fREF2 tPU Operating Voltage Operating Voltage Operating Voltage Ambient Commercial Temp Maximum Load Capacitance VDD/VDDL = 3.3V Maximum Load Capacitance VDDL = 2.5V SSCLK1/2/3/4/5/6 when VDD = AVDD = VDDL = 3.3 V SSCLK1/2/3/4 when VDD = AVDD = 3.3.V and VDDL = 2.5V REFOUT when VDD = AVDD = 3.3.V and VDDL = 3.3V or 2.5V Clock Input Crystal Input Power up time for all VDDs to reach minimum specified voltage (power ramps must be monotonic) Description Min 3.135 3.135 2.375 0 - - 3 3 8 8 8 0.05 Typ. 3.3 3.3 2.5 - - - - - - - - - Max 3.465 3.465 2.625 70 15 15 200 166 166 166 30 500 Unit V V V C pF pF MHz MHz MHz MHz MHz ms
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CY25200
DC Electrical Specifications
Parameter[3] IOH3.3 IOL3.3 IOH2.5 IOL2.5 VIH VIL IVDD[4] IVDDL2.5[4] IVDDL3.3[4] IDDS IOHZ IOLZ Name Output High Current Output Low Current Output High Current Output Low Current Input High Voltage Input Low Voltage Supply Current Supply Current Supply Current Power Down Current Output Leakage Description VOH = VDD - 0.5V, VDD/VDDL = 3.3V VOL = 0.5V, VDD/VDDL = 3.3V VOH = VDDL - 0.5V, VDDL = 2.5V VOL = 0.5V, VDDL = 2.5V CMOS levels, 70% of VDD CMOS levels, 30% of VDD AVDD/VDD Current VDDL Current (VDDL = 2.625V) VDDL Current (VDDL = 3.465V) VDD = VDDL = AVDD = 3.465V VDD = VDDL = AVDD = 3.465V Min 10 10 8 8 0.7 0 - - - - - Typ. 12 12 16 16 - - - - - - - Max - - - - 1.0 0.3 33 20 26 50 10 Unit mA mA mA mA VDD VDD mA mA mA uA uA
Notes 2. Rated for 10 years. 3. Not 100% tested, guaranteed by design. 4. IVDD currents specified for SSCLK1/2/3/4/5/6 = 33.33 MHz with CLKIN = 14.318 MHz and 15 pF on all the output clocks.
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CY25200
AC Electrical Specifications
Parameter
DC
Description
Output Duty Cycle Output Duty Cycle
Condition
SSCLK, Measured at VDD/2 REFCLK, Measured at VDD/2 Duty Cycle of CLKIN = 50%.
Min
45 40 0.6 0.8 0.5 0.6 0.6 1.0 - - - - - - - - - - - - - - - 30.0 - - -
Typ.
50 50 - - - - - - - - - - - - - - - - - - 150 150 150 31.5 3 2 -
Max
55 60 2.0 3.5 2.2 3.0 1.9 2.9 110 170 140 290 100 120 180 180 110 170 190 330 300 300 300 33.0 5 3 250
Unit
% % V/ns V/ns V/ns V/ns V/ns V/ns ps ps ps
SR1 SR2 SR3 SR4 SR5 SR6 TCCJ1
Rising/Falling Edge Slew Rate SSCLK1/2/3/4 < 100 MHz, VDD = VDDL = 3.3V Rising/Falling Edge Slew Rate SSCLK1/2/3/4 100 MHz, VDD = VDDL = 3.3V Rising/Falling Edge Slew Rate SSCLK1/2/3/4 < 100 MHz, VDD = VDDL = 2.5V Rising/Falling Edge Slew Rate SSCLK1/2/3/4 100 MHz, VDD = VDDL = 2.5V Rising/Falling Edge Slew Rate SSCLK5/6 < 100 MHz, VDD = VDDL = 3.3V Rising/Falling Edge Slew Rate SSCLK5/6 100 MHz, VDD = VDDL = 3.3V Cycle-to-Cycle Jitter SSCLK1/2/3/4 CLKIN = SSCLK1/2/3/4 = 166MHz, 2% spread and SSCLK5/6 = REFOUT, VDD = VDDL = 3.3V CLKIN = SSCLK1/2/3/4 = 66.66 MHz, 2% spread and SSCLK5/6 = REFOUT, VDD = VDDL = 3.3V CLKIN = SSCLK1/2/3/4 = 33.33 MHz, 2% spread and SSCLK5/6 = REFOUT, VDD = VDDL = 3.3V CLKIN = SSCLK1/2/3/4 = 14.318MHz, 2% spread and SSCLK5/6 = REFOUT, VDD = VDDL = 3.3V
TCCJ2
Cycle-to-Cycle Jitter SSCLK5/6=REFOUT
CLKIN = SSCLK1/2/3/4 = 166 MHz, 2% spread and SSCLK5/6 = REFOUT, VDD = VDDL = 3.3V CLKIN = SSCLK1/2/3/4 = 66.66 MHz, 2% spread and SSCLK5/6 = REFOUT, VDD = VDDL = 3.3V CLKIN = SSCLK1/2/3/4 = 33.33 MHz, 2% spread and SSCLK5/6 = REFOUT, VDD = VDDL = 3.3V CLKIN = SSCLK1/2/3/4 = 14.318 MHz, 2% spread and SSCLK5/6 = REFOUT, VDD = VDDL = 3.3V
ps ps ps
TCCJ3
Cycle-to-Cycle Jitter SSCLK1/2/3/4
CLKIN = SSCLK1/2/3/4 = 166 MHz, 2% spread and SSCLK5/6 = REFOUT, VDD = 3.3V, VDDL = 2.5V CLKIN = SSCLK1/2/3/4 = 66.66MHz, 2% spread and SSCLK5/6 = REFOUT, VDD = 3.3V, VDDL = 2.5V CLKIN = SSCLK1/2/3/4 = 33.33 MHz, 2% spread and SSCLK5/6 = REFOUT, VDD = 3.3V, VDDL = 2.5V CLKIN = SSCLK1/2/3/4 = 14.318 MHz, 2% spread and SSCLK5/6 = REFOUT, VDD = 3.3V, VDDL = 2.5V
ps ps ps
tSTP TOE1 TOE2 FMOD tPU1 tPU2 tSKEW[5]
Power Down Time (pin3 = PD#) Output Disable Time (pin3 = OE) Output Enable Time (pin3 = OE)
Time from falling edge on PD# to stopped outputs (Asynchronous) Time from falling edge on OE to stopped outputs (Asynchronous) Time from rising edge on OE to outputs at a valid frequency (Asynchronous)
ns ns ns kHz ms ms ps
Spread Spectrum Modulation SSCLK1/2/3/4/5/6 Frequency Power Up Time, Crystal is used Power Up Time, Reference clock is used Clock Skew Time from rising edge on PD# to outputs at valid frequency (Asynchronous) Time from rising edge on PD# to outputs at valid frequency (Asynchronous) Output to output skew between related clock outputs. Measured at VDD/2.
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CY25200
Ordering Information
Ordering Code[6] CY25200ZXC_XXXW CY25200FZXC CY25200FZXCT CY3672 CY3672-PRG CY3695 Package Type 16-lead TSSOP (Pb Free) 16-lead TSSOP (Pb Free) 16-lead TSSOP - Tape and Reel (Pb Free) FTG Development Kit FTG Programmer CY22050F/CY22150F/CY25200F Socket Adapter Programming Temperature Operating Range Factory Factory Field Field N/A N/A N/A Commercial, 0 to 70C Commercial, 0 to 70C Commercial, 0 to 70C Commercial, 0 to 70C N/A N/A N/A
CY25200ZXC_XXXWT 16-lead TSSOP - Tape and Reel (Pb Free)
Table 5. 16-lead TSSOP Package Characteristics Parameter Name theta JA 115 Value Unit C/W
JA
Package Drawing and Dimensions
Figure 8. 16-lead TSSOP 4.40 MM Body Z16.173
PIN 1 ID
1
DIMENSIONS IN MM[INCHES] MIN. MAX. REFERENCE JEDEC MO-153
6.25[0.246] 6.50[0.256] 4.30[0.169] 4.50[0.177]
PACKAGE WEIGHT 0.05gms
16
0.65[0.025] BSC.
0.19[0.007] 0.30[0.012]
1.10[0.043] MAX.
0.25[0.010] BSC GAUGE PLANE 0-8
0.076[0.003] 0.85[0.033] 0.95[0.037] 0.05[0.002] 0.15[0.006] SEATING PLANE 0.50[0.020] 0.70[0.027] 0.09[[0.003] 0.20[0.008]
51-85091-*A
4.90[0.193] 5.10[0.200]
Notes 5. Skew and phase alignment is guaranteed within all SSCLK outputs and within both REFOUT outputs. SSCLK and REFOUT outputs are not phase aligned to each other. 6. "XXX" denotes the assigned product dash number. "W" denotes the different revisions of the product.
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CY25200
Document History Page
Document Title: CY25200 Programmable Spread Spectrum Clock Generator for EMI Reduction Document Number: 38-07633 REV. ** *A *B *C *D ECN NO. 204243 220043 267832 291094 1821908 Issue Date See ECN See ECN See ECN See ECN See ECN Orig. of Change RGL RGL RGL RGL New data sheet Minor Change: Corrected letter assignment in the ordering info for Pb Free. Added Field Programmable Devices and Functionality Added tSKEW spec. and footnote Description of Change
DPF/AESA Corrected FSSCLK-Low Voltage specification on page 7 for SSCLK5/6 to SSCLK1/2/3/4, as SSCLK5/6 output does not operate at low voltage. Deleted Tccj4 on page 8 for the same reason as above
(c) Cypress Semiconductor Corporation, 2004-2007. The information contained herein is subject to change without notice. Cypress Semiconductor Corporation assumes no responsibility for the use of any circuitry other than circuitry embodied in a Cypress product. Nor does it convey or imply any license under patent or other rights. Cypress products are not warranted nor intended to be used for medical, life support, life saving, critical control or safety applications, unless pursuant to an express written agreement with Cypress. Furthermore, Cypress does not authorize its products for use as critical components in life-support systems where a malfunction or failure may reasonably be expected to result in significant injury to the user. The inclusion of Cypress products in life-support systems application implies that the manufacturer assumes all risk of such use and in doing so indemnifies Cypress against all charges. Any Source Code (software and/or firmware) is owned by Cypress Semiconductor Corporation (Cypress) and is protected by and subject to worldwide patent protection (United States and foreign), United States copyright laws and international treaty provisions. Cypress hereby grants to licensee a personal, non-exclusive, non-transferable license to copy, use, modify, create derivative works of, and compile the Cypress Source Code and derivative works for the sole purpose of creating custom software and or firmware in support of licensee product to be used only in conjunction with a Cypress integrated circuit as specified in the applicable agreement. Any reproduction, modification, translation, compilation, or representation of this Source Code except as specified above is prohibited without the express written permission of Cypress. Disclaimer: CYPRESS MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARD TO THIS MATERIAL, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. Cypress reserves the right to make changes without further notice to the materials described herein. Cypress does not assume any liability arising out of the application or use of any product or circuit described herein. Cypress does not authorize its products for use as critical components in life-support systems where a malfunction or failure may reasonably be expected to result in significant injury to the user. The inclusion of Cypress' product in a life-support systems application implies that the manufacturer assumes all risk of such use and in doing so indemnifies Cypress against all charges. Use may be limited by and subject to the applicable Cypress software license agreement.
Document #: 38-07633 Rev. *D
Revised December 11, 2007
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