W48C101-01H Cypress Semiconductor Corporation., W48C101-01H Datasheet
W48C101-01H
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W48C101-01H Summary of contents
Page 1
... Clock Control CPU2 CPU3 ÷2/÷3 VDDQ3 PCI_F PCI1 Stop Clock PCI2 Control PCI3 PCI4 PCI5 PCI6 PCI7 VDDQ3 48MHz 48MHz • 3901 North First Street W48C101-01 inputs have 250-k pull-up resistors CPU PCI SEL1 SEL0 (MHz) (MHz HI-Z HI 66.6 33.3 0 ...
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... Power Connection: Connect to 3.3V supply. Power Connection: Power supply for CPU0:3 and APIC0:1 output buffers. Con- nect to 2.5V supply or 3.3V supply. Ground Connection: Connect all ground pins to the common system ground plane. No Connect: Do not connect. W48C101-01 Page [+] Feedback ...
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... Cypress does offer options with more spread and greater EMI reduction. Contact your local Sales representative for details on these devices. Spread Spectrum clocking is activated or deactivated by se- lecting the appropriate values for SPREAD#. Highest non- SSC of f nom f nom Figure 2. Typical Modulation Profile W48C101-01 Page [+] Feedback ...
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... All clock outputs loaded with 6" 60 transmission lines with 20-pF capacitors. 3. W48C101-01 logic inputs have internal pull-up devices, except SEL100/66# (pull-ups not full CMOS level). Document #: 38-07192 Rev. *A above those specified in the operating sections of this specifi- cation is not implied. Maximum conditions for extended peri- ods may affect reliability ...
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... DD 5. The W48C101-01 contains an internal crystal load capacitor between pin X1 and ground and another between pin X2 and ground. Total load placed on crystal is 14 pF; this includes typical stray capacitance of short PCB traces to crystal input capacitance is applicable when driving X1 with an external clock source (X2 is left unconnected). ...
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... Measured from 2.4V to 0.4V Measured on rising and falling edge at 1.5V Assumes full supply voltage reached within 1 ms from power-up. Short cycles exist prior to frequency stabilization. Average value during switching transition. Used for determining series termination value. W48C101-01 CPU = 66.6/100 MHz Min. Typ. Max. Unit 30 ...
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... Assumes full supply voltage reached within 1 ms from power-up. Short cycles exist prior to fre- quency stabilization. Average value during switching transition. Used for determining series termination value. Package Name Package Type H 48-pin SSOP (300 mils) W48C101-01 CPU = 66.6/100 MHz Min. Typ. Max. Unit 48.008 MHz +167 ppm ...
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... The inclusion of Cypress Semiconductor products in life-support systems application implies that the manufacturer assumes all risk of such use and in doing so indemnifies Cypress Semiconductor against all charges. W48C101-01 Page ...
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... Document Title: W48C101-01 Spread Spectrum BX System Frequency Generator Document Number: 38-07192 Issue REV. ECN NO. Date Change ** 110593 12/15/01 *A 12823 12/22/02 Document #: 38-07192 Rev. *A Orig. of Description of Change DSG Change from Spec number: 38-00852 to 38-07192 RBI Add Power up Requirements to Maximum Ratings Information W48C101-01 Page ...