Lattice Semiconductor iCE40 UltraLite, Руководство по эксплуатации

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iCE40 Oscillator Usage Guide
Technical Note
© 2016-2020 Lattice Semiconductor Corp. All Lattice trademarks, registered trademarks, patents, and disclaimers are as listed at www.latticesemi.com/legal .
All other brand or product names are trademarks or registered trademarks of their respective holders. The specifications and information herein are subject to change without notice.
12 FPGA-TN-02008-1.7
Revision History
Revision 1.7, December 2020
Section Change Summary
Appendix A. Design Entry Updated code in the A.1. SB_LFOSC Usage in iCEcube2 Software and the A.2. SB_HFOSC
Usage in iCEcube2 Software sections.
Revision 1.6, July 2020
Section Change Summary
Acronyms in This Document Added this section.
Appendix A. Design Entry Updated Parameter Values and Verilog Instantiation in the SB_HFOSC Usage in iCEcube2
Software section.
Revision 1.5, March 2020
Section Change Summary
All Added primitives for Lattice Radiant Software.
Disclaimers Added this section.
Revision 1.4, September 2017
Section Change Summary
All

Changed document number from TN1296 to FPGA-TN-02008.

Updated document template.
Multiple Fixed the port name of SB_LFOSC and SB_HFOSC modules.
Changed Oscillator input pin names:

CLKHF_EN => CLKHFEN

CLKHF_PU => CLKHFPU

CLKLF_EN => CLKLFEN

CLKLF_PU => CLKLFPU
Connectivity Guideline Removed clock generation logic information from the Connectivity Guideline section.
Disclaimers Added this section.
Revision 1.3, June 2016
Section Change Summary
Introduction Updated Introduction section. Added iCE40 UltraPlus.
Revision 1.2, April 2015
Section Change Summary
Connectivity Guideline Updated Connectivity Guideline section. Added example of clock generation logic.
Technical Support Assistance Updated Technical Support Assistance section.
Revision 1.1, January 2015
Section Change Summary
All Added support for iCE40 UltraLite.
Revision 1.0, June 2014
Section Change Summary
All Initial release.