MPC5xxxのトピックRe: Basic MPC5676R question re; memory performance: https://community.nxp.com/t5/MPC5xxx/Basic-MPC5676R-question-re-memory-performance/m-p/430211#M1069 <HTML><HEAD></HEAD><BODY><P>Hi,</P><P>flash memory requires two wait states for read (RWSC parameter):</P><P><span class="lia-inline-image-display-wrapper" image-alt="pastedImage_0.png"><img src="https://community.nxp.com/t5/image/serverpage/image-id/25976iE3C55375CDEAFEF4/image-size/large?v=v2&amp;px=999" role="button" title="pastedImage_0.png" alt="pastedImage_0.png" /></span></P><P>SRAM memory requires 1 wait state for system clock higher than 60MHz.</P><P> <span class="lia-inline-image-display-wrapper" image-alt="pastedImage_1.png"><img src="https://community.nxp.com/t5/image/serverpage/image-id/26024iDA4FBBD511E1CB95/image-size/large?v=v2&amp;px=999" role="button" title="pastedImage_1.png" alt="pastedImage_1.png" /></span></P><P>Then I would recommend this application note:</P><P><A href="http://www.freescale.com/files/microcontrollers/doc/app_note/AN4324.pdf">http://www.freescale.com/files/microcontrollers/doc/app_note/AN4324.pdf</A></P><P><A href="http://www.freescale.com/files/microcontrollers/doc/app_note/AN4324_SW.zip">http://www.freescale.com/files/microcontrollers/doc/app_note/AN4324_SW.zip</A></P><P>It shows how to optimize the settings to get maximum performance (enabling of cache, prefetch…).</P><P></P><P>Hope this helps.</P><P><SPAN style="font-size: 11.0pt; font-family: 'Calibri','sans-serif';">Lukas</SPAN></P></BODY></HTML> Thu, 14 May 2015 11:22:32 GMT lukaszadrapa 2015-05-14T11:22:32Z Basic MPC5676R question re; memory performance: https://community.nxp.com/t5/MPC5xxx/Basic-MPC5676R-question-re-memory-performance/m-p/430210#M1068 <HTML><HEAD></HEAD><BODY><P>What is the performance of the on-chip FLASH and RAM?</P><P style="min-height: 8pt; padding: 0px;">&nbsp;</P><P>2ns listing - tripped the Assumed answer flag, and couldn't reset to this still being an open question....</P></BODY></HTML> Thu, 14 May 2015 02:47:18 GMT https://community.nxp.com/t5/MPC5xxx/Basic-MPC5676R-question-re-memory-performance/m-p/430210#M1068 laurentmeilleur 2015-05-14T02:47:18Z Re: Basic MPC5676R question re; memory performance: https://community.nxp.com/t5/MPC5xxx/Basic-MPC5676R-question-re-memory-performance/m-p/430211#M1069 <HTML><HEAD></HEAD><BODY><P>Hi,</P><P>flash memory requires two wait states for read (RWSC parameter):</P><P><span class="lia-inline-image-display-wrapper" image-alt="pastedImage_0.png"><img src="https://community.nxp.com/t5/image/serverpage/image-id/25976iE3C55375CDEAFEF4/image-size/large?v=v2&amp;px=999" role="button" title="pastedImage_0.png" alt="pastedImage_0.png" /></span></P><P>SRAM memory requires 1 wait state for system clock higher than 60MHz.</P><P> <span class="lia-inline-image-display-wrapper" image-alt="pastedImage_1.png"><img src="https://community.nxp.com/t5/image/serverpage/image-id/26024iDA4FBBD511E1CB95/image-size/large?v=v2&amp;px=999" role="button" title="pastedImage_1.png" alt="pastedImage_1.png" /></span></P><P>Then I would recommend this application note:</P><P><A href="http://www.freescale.com/files/microcontrollers/doc/app_note/AN4324.pdf">http://www.freescale.com/files/microcontrollers/doc/app_note/AN4324.pdf</A></P><P><A href="http://www.freescale.com/files/microcontrollers/doc/app_note/AN4324_SW.zip">http://www.freescale.com/files/microcontrollers/doc/app_note/AN4324_SW.zip</A></P><P>It shows how to optimize the settings to get maximum performance (enabling of cache, prefetch…).</P><P></P><P>Hope this helps.</P><P><SPAN style="font-size: 11.0pt; font-family: 'Calibri','sans-serif';">Lukas</SPAN></P></BODY></HTML> Thu, 14 May 2015 11:22:32 GMT https://community.nxp.com/t5/MPC5xxx/Basic-MPC5676R-question-re-memory-performance/m-p/430211#M1069 lukaszadrapa 2015-05-14T11:22:32Z Re: Basic MPC5676R question re; memory performance: https://community.nxp.com/t5/MPC5xxx/Basic-MPC5676R-question-re-memory-performance/m-p/430212#M1070 <HTML><HEAD></HEAD><BODY><P>Many thanks!</P><P>Laurent Meilleur</P><P>Vice President, Strategic Markets</P><P>DDC-I Inc.</P><P>220 River Reach Rd.</P><P>Swansboro, NC 28584</P><P>lmeilleur@ddci.com</P><P>o: (602) 386-4343</P><P>m: (919) 619-6752</P><P><A href="https://community.nxp.com/www.ddci.com" target="test_blank">www.ddci.com</A></P></BODY></HTML> Thu, 14 May 2015 12:17:40 GMT https://community.nxp.com/t5/MPC5xxx/Basic-MPC5676R-question-re-memory-performance/m-p/430212#M1070 laurentmeilleur 2015-05-14T12:17:40Z