https://community.nxp.com/t5/LPC-Microcontrollers/SPI-slave-on-LPC802/m-p/1283792#M45193 Dear NXPs, 我们在寻找一颗SPI 做slave能达到12Mhz或者16Mhz的产品，调过检索看到了LPC的data sheet。对这颗MCU的SPI描述感到困惑： 1.这颗MCU是否有DMA？（规格书里面有提到，但是没有列出来）； 2. 这颗MCU的clock只有15Mhz，但是在SPI描述里面，做slave的话，SPI可以支持17.8Mhz，这可以实现吗？ 感谢解答~！ Shiven Fri, 28 May 2021 02:16:48 GMT shiven 2021-05-28T02:16:48Z https://community.nxp.com/t5/LPC-Microcontrollers/SPI-slave-on-LPC802/m-p/1283792#M45193 Dear NXPs, 我们在寻找一颗SPI 做slave能达到12Mhz或者16Mhz的产品，调过检索看到了LPC的data sheet。对这颗MCU的SPI描述感到困惑： 1.这颗MCU是否有DMA？（规格书里面有提到，但是没有列出来）； 2. 这颗MCU的clock只有15Mhz，但是在SPI描述里面，做slave的话，SPI可以支持17.8Mhz，这可以实现吗？ 感谢解答~！ Shiven Fri, 28 May 2021 02:16:48 GMT https://community.nxp.com/t5/LPC-Microcontrollers/SPI-slave-on-LPC802/m-p/1283792#M45193 shiven 2021-05-28T02:16:48Z https://community.nxp.com/t5/LPC-Microcontrollers/SPI-slave-on-LPC802/m-p/1284487#M45228 <P>Hello&nbsp;<A id="link_12" class="lia-link-navigation lia-page-link lia-user-name-link" href="https://community.nxp.com/t5/user/viewprofilepage/user-id/187256" target="_self" aria-label="View Profile of shiven"><SPAN class="">shiven</SPAN></A>,</P> <P>1)LPC802 doesn't support DMA.</P> <P>2)Where said "<SPAN>做slave的话，SPI可以支持17.8Mhz，</SPAN>" ? I don't think it can.</P> <P>3) You can consider LPC845 or LPC824 :</P> <P><A href="https://www.nxp.com/products/processors-and-microcontrollers/arm-microcontrollers/general-purpose-mcus/lpc800-cortex-m0-plus-/low-cost-microcontrollers-mcus-based-on-arm-cortex-m0-plus-cores:LPC84X" target="_blank">https://www.nxp.com/products/processors-and-microcontrollers/arm-microcontrollers/general-purpose-mcus/lpc800-cortex-m0-plus-/low-cost-microcontrollers-mcus-based-on-arm-cortex-m0-plus-cores:LPC84X</A>&nbsp;</P> <P><A href="https://www.nxp.com/products/processors-and-microcontrollers/arm-microcontrollers/general-purpose-mcus/lpc800-cortex-m0-plus-/low-cost-microcontrollers-mcus-based-on-arm-cortex-m0-plus-cores:LPC82X?tab=Documentation_Tab" target="_blank">https://www.nxp.com/products/processors-and-microcontrollers/arm-microcontrollers/general-purpose-mcus/lpc800-cortex-m0-plus-/low-cost-microcontrollers-mcus-based-on-arm-cortex-m0-plus-cores:LPC82X?tab=Documentation_Tab</A>&nbsp;</P> <P>&nbsp;</P> <P>BR</P> <P>Alice</P> Mon, 31 May 2021 04:00:52 GMT https://community.nxp.com/t5/LPC-Microcontrollers/SPI-slave-on-LPC802/m-p/1284487#M45228 Alice_Yang 2021-05-31T04:00:52Z