CY7C68014A-56LTXC Cypress Semiconductor Corp, CY7C68014A-56LTXC Datasheet - Page 62

• Manufacturer Part Number: CY7C68014A-56LTXC
• Description: IC MCU USB PHERIPH FX2LP 56VQFN
• Manufacturer: Cypress Semiconductor Corp
• Series: EZ-USB FX2LP™r

Specifications of CY7C68014A-56LTXC

• Applications: USB Microcontroller
• Core Processor: 8051
• Program Memory Type: ROMless
• Controller Series: CY7C680xx
• Ram Size: 16K x 8
• Interface: I²C, USB, USART
• Number Of I /o: 24
• Voltage - Supply: 3 V ~ 3.6 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 56-VQFN Exposed Pad, 56-HVQFN, 56-SQFN, 56-DHVQFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: CY4611B - KIT USB TO ATA REFERENCE DESIGN
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 428-2934

12. PCB Layout Recommendations
Follow these recommendations to ensure reliable high
performance operation:
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Document #: 38-08032 Rev. *T
Note
25. Source for recommendations: EZ-USB FX2™PCB Design Recommendations,
Four layer impedance controlled boards are required to
maintain signal quality.
Specify impedance targets (ask your board vendor what they
can achieve).
To control impedance, maintain trace widths and trace spacing.
Minimize stubs to minimize reflected signals.
Connections between the USB connector shell and signal
ground must be near the USB connector.
http://www.usb.org/developers/docs/hs_usb_pdg_r1_0.pdf.
[25]
http://www.cypress.com
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Bypass and flyback caps on VBus, near connector, are
recommended.
DPLUS and DMINUS trace lengths should be kept to within
2 mm of each other in length, with preferred length of 20 to
30 mm.
Maintain a solid ground plane under the DPLUS and DMINUS
traces. Do not allow the plane to split under these traces.
Do not place vias on the DPLUS or DMINUS trace routing.
Isolate the DPLUS and DMINUS traces from all other signal
traces by no less than 10 mm.
and High Speed USB Platform Design Guidelines,
CY7C68013A, CY7C68014A
CY7C68015A, CY7C68016A
Page 62 of 67
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